HomeMy WebLinkAbout2010-252A (02)Indian River County
2030 Comprehensive Plan
Aft d w■M
Indian River Cc ur ty Corr muniity Development) Deparim ent
Adopted: Ccitlober 12, 2010
C ampreb encs ive Plain Starmwaiter Mainiagemen t Sub. -El eme nt
TABLE OF CONTENTS
Page
l N TRC D UCTIC N ]
HISTORY ]
D FIF IN ITIONS 21
AGENCIES INMOLVIED IN STORMWATER MANAGEMENT 9
Feidu ail G ouch nment 9
Fcidwa] Emergcncyl Management AgenoM 9
Natural Rcsource Conscrviation Scrviicc 9
Environmfintal Protection AgenoM 9
Stahel of Florida l
D ep aintm eint cifl Envincinmental P notection
St. Jlabn s Riven Water Management District
F lorida D of artment cifl Tnansp ortaticn i
Local Agfncieis i
Indian Rh or County i
ITS 29E Sp ecial D r ainagei D istriicts E
In corp ca ateid Municipalities E
Private Systems E
EXISTING CON DITIC NS
9
TopograpUM and Fhl siographlyl
9
Coastal Barrien Island
9
Atlantic Coastal Sand Ridge
9
Ten Mil c Riidgc
9
Inter -ridge Aneia
ICl
St. JloHns Marsh/Up per St. Joh ns R iv er Basin
1 Cl
Climate
1 Cl
Mails
l l
Flood prone Arcas
11
Wetlands
12
Indian Rivw Lagoon Watershed
12
Sediastian Riveir Implrowir cnt Districill Basin
13
St. Sehlastian Riiv or Hasin
15
C ammiu nUN D erre lapmient Ilepairtment Indian Rive r CauntN
Campret ensivci Pion Sturmwailer MEiniaigcimenil Slub-Elemcnt
TAHIIF OF CONVENTS
33
Water Quality
f agg
E art ser Islan d E asin s
17
Sub -basin B-1 (Southl Boachl area)
17
Sub -basin B-2 (Tlawn ofIIrkian Riveir Shareis)
18
Sub -basin B-3 (A.mbersand Baachl area)
19
M ainlan d l RL Basin s
20
Sub -basin RI -1 (Southl County)
20
• Sub -basin RI -2 (Gifford/Wabasso)
22
Sub -basin RI -3 (Roseland area;
23
In dian River Farms Water Cartrol E istricit Basin s
24
Sub -basins C-1 (North) RalieflCanal)
26
• Sub -basin C-21jMain Hel:icif Canal)
26
• Sub -basin C-] �jSouthl RoliefIClanlal)
27
Fellsmcira Flat ms W star Contral Disllricit Basins
27
St. JIoHn s Rivcir W atet stied
27
D alta Farms Basin
28
Blue CJ1press Marsh Basins
29
• Port Unimi Marsh Clanserviation Areia Sub -basin
29
• Bluci Cypross Marsh Conservialion Asea Sub -basin
29
• Muci Cypross Water Management A.rcia Sub-basiin
29
• St. Johns Watar Manlagernant Asea Sub -basin
29
Sll. John Improvement District Basin
30
TalHot Tarraca Basin
32
ANALYSIS
33
Water Quality
34
1 mprovin g tHa Quality ofl Stormw ater Flow ing in to the Lagoon
34
Rleclassificlation of Surlhca W aters
35
Red ucing We Q uantit31 of Stot mwater Flow in g in to tHa Lagoon
35
Coun t31 Stormw star Division
36
Comim unity Ratin g SJ1stem
36
liHM A Map Mod ern ization
36
Water Qualit31 Level of Sarvica Sllamdards
37
Stormwater Mastet f lana in g
37
Stormwater Management Pun ding
37
COALS, OBJECTI VES, AND P C LICIES 38
P L IA N IM P ILEMENTA TIC N 45
EN ALUA TI ON A ND MC NITC RING PRIQ CED URE S 46
C ammu nilly{ Develarlment t✓ eparilment Indian River C aunily{ iii
Curr prehensive Plan Slormwaler Managemerd'Sub-Elemenit
Ll SSIT OF BIIGURES
Hiiguneis
Naomi u
I Indian R:ivar County Dia:.inago Elastins 13.1
LINT Oil TABLES
Tab 1 es Page
Stormwater Management Sub-Doment Implurrientalion Matrix 47
2 Stormwater Mana€lament Sub-Doment Evaluation Matrix 50
C alma uniit3l llevelupr ent Dept rtir ent Indian River C uunt3l iv
Camprch(insivc Plan 9llarmiwaileir Managenieinil Suit-Dleiment
INTRIODUCTION
The purposes of tho Stormwater M anagemiarit r8ub-olemenil is to identify the natulal candit:icns which)
affUcit the quantity, and qualit)I cfI stormwatar runoff, inventory avid analyza existing stormwaten
managlament fh6litlas, and dovalop policies and implerniaritallion slrategies fon stormwaten
manadament.
H l S TIORIY
Bellween 1919 and 15128, fives F.SI. X18 Spacial Drainage Llisilricts wore creaileid in Iridian River
County by thle Alorida Logis:lature. Ur.iken A.S. x518, those water control disllricts were 8ranted thle
aullhariity to levy taxis ori landowners to construct drainagle pnojecits so that land could ba usad kir lhle
cultivialion cif citrus and vegcitabla arops. Using that taxing authority, the water canilral districts
eanstrucllod a r.iatwork of drainage aanalls that a:llered the natural drainages pattern of the Clcunt)I by
art ifrcia:l lly expanding) ilha Indian Riven Laglacn (IRII) watershled.111.1at strategy, kr.lcwn as "ditch iit and
drain it", was dasignad to prallact davelapmiant from f. ccdimgl l y miok ifying natural systemis to convay
stormwator runafflaway from develapod sites marcs rapidlN.
Prior to the mid -]I 97CIs, Indian River County Had experienced only minior urbaniaatian. Since That
Ilime, haweven, growlll has incroascid significantly tluloughout tha County. 11hat growth has resulted
in further alleratiicn of natural drainagla patterns. Additiicnally, davclopmenit Has incireased thle
amount of imporvicus surfaccis, suah as slreiets and paiking lots thlereby altoringl slormwater
discharaci napes.
Over Ilhe pasl sevaral doaades, ir.iareased growlll Has coinck ad with more str:ingenl and
comprehlensiva federal, stale and ]kcal stormwator managomiant roglullations. For that reason thle
capacity of slarmiwallar mana€lament facilities thrloughlaul much) of the County has remained
adequate. A s a resullt, only a f6w ancias in the unincorporated Caunt)I experienico penlodla lacalized
drainage prabllems.
In additions to sllarmiwallar quantity issues, the pasl strallogy of "dilcll it and drain it" praducad samia
dertrimental effocits an water quality. As incmciascid vclocit)I avid disahaigla cfI stormwator runoff
disruptak nallural drainage featuras and contribulled to sed:imiant loading, cllanges la ilho land surface
riasulting from urban devolopmunt inareased neon-pair.it scurca pollullant leak ir.ias to receiving
waterbodies. Mostly, pit :is thle Indian Riven Lagoon Ihat is the recipicir.it of thesa pollulants.
Ail thle prasent tima, davalopment projects ana naquirad to cor.itrol ilha quantity and qualit)l of
sllcrmwall ar runoff. Whlen fac& with issues of maniaging both) thle quantity and quality of stormwaller
runcfft dovelopans often undertaka strallegies which attempll Ila enhance and/or replicate natural
systems.
Can imuniitj I em el apmunit Dcpartmont Inidliani River Caumity
Campreherisive Plan Silarmwailer Mlamigemienil � uit-Dlemeril
Gcineiiial'IN, effeetime stormwatcm managemcinl einta:il s lhle usei of silruatural and nonrslructural faoiEticis
to ensura Mat thlci mo.lumci, rata, tiim ing, and pol: uilant loadiin€I of 1post-devulopmenl silarmwarter runoff
ara simi: ani to thlal whlichl occurred priori to demcilopment. Ovenii the ct jectiuei is to utilize a
comb.inalion of both) tcahrliques to effciat:imaly promide adaquata pallution rill and flood
protection :in the mosl aeanomical mannar possibla witHim Indian Rivar County.
DEFINITION'S
Tha followiing sciation contains def nilions for the silarmwater managamient termis referenead ir.i ilhis
Sub -•Ell emcnl :
East Managamiant Practiices (BMPs): These iii to practices usad to achieme satilsfactory water
quality ata minimum asst. Struolujal HMPs amphasize prasaniation and/or simulation of natural
drainage featuras to pnomota i[nfiiltnalion, filtration, and raduaed peak d1sohanges. Examples include:
ratenticn/c citentiion pands, infiltration trar.ichles/basins and giiassad swialas. Exampllas cfl r.ian•
struolural BMPs inalude: watenshad managament, fac:ilitias miaintananae, land usa planning anc
public aducat:ion.
Dasi n Hilann: M.la twarity-fine-ycian raturn fiiequenoy, twlentyl-fourhlour c uration, Soil C ansarvat:ian
�larviice '➢ypa II modifrcid rainfal l d:istn:it uilior.i. 'Wa miinimum totall amount of pneoipitalioni foil lhlis
twanity-four-hour c uration storm shall I be 8.64 inichles.
Elraina eg_Basini: phis :is the ancia, def incic by topognaphia boundar:icis, whicih coni as stormwiatar
rur. cffIto a reaaiming body.
Eatentilan Strucilura: `➢his is a structure whiah collacts and ilamporarilly Aoras starmivaailan fon tEci
purpase aft twailment lhrlaughl physical, chlemiicall, an biological pnocasses with subsciquanil gradual
rel aasa cfl ilha stannwatar. Thle bencifiits afl on-site storage of stormwziten includci: reducing thlci
meaaaity cflsil irmwailar runoff; setllling and filtering pcllutanils, and rachlarg:ing aquifers.
F irsl Fllushl: M.Iis descn:ibas the washing aat:iory thal silarmwater runoff blas on accumulaled pol:lutarlts.
Studies ir.ic i aata plat the first inch of stormwiatar runoff transpari s as mivahl as 90 parcent of the nori-
point sourca pollutiicn miginailing from a storm.
Floodplain: This is an araa wilthl a hlighl probability of being inundatac dun:ing a 100-yaar flood avcr.it.
Flood 21cncis: Areas designated as " specia:l flood hazard areas" ara dalineailad by BHMA's National
Flood Ir.isuranca Hiioglram (NBIH) as "A" zones or "'NA" zonas on Blood Insurance Plana Maps (FIRMs).
Designiatad flood zones as c cifinied by FEIMA are Listad below:
Community Develapmerill DeAlarlmerill Inc liar River Cour illy
Comprelienisive Plan Starrrimuater M ainagement Suit-Hlemienil
Zonei "A" - Base flood cilevations have not becin detcarminied.
Zona "AFI" Base flood cilevations certermir.ieid.
Zor.iei "AH" - Base flood elevations c eitermiined; fllooc depths of 1 to 3 feat (usually arcias of
ponding).
Zor.iei "AO" - Averago depthlsa delerm:incad; f. ood c capthls of 1 to =1 fOet.
Zor.iei "L " - Areas in which) f and hazards area undetermined.
Zor.iei "N " - Coastal f. ood area with velaaity hazard (wave acat:ion);
no base flood cilevalion dei armination.
Zor.ia "N B" - Coastal flood area with velaaity hazard (wave acation);
base flood eleivatians determiincid.
Zor.ia "X" - 1) Ai eas outsido a 500 yciar f land; 2) Areas of 300 yean flood (outside ll OCI ycian f load';
on, 3) Areas afl 100 ycian flood withl aveirage dcipthls less lhlan ll foot, w:ilh dnair i
arcias less than ll square mi:lci, ar areas pralected by levees fram a ICICI year flood.
C OBRA Zone- Flood iinsunanco not ava:i ll able for new or subs) anti al ly improved strucll urcis altar a
sapeciific doadline on designaleid aaasi1al ban ier islands.
Flowi Rllallei: Arcia(sq.ft) x Vciloaityljf�s) = disahmoa rate ar flow rata.
Impervious swfaaci: Mlis refensi to a subsllance ar sunfacae, suah as a raac, parking lot ar building,
whliah will nal allow the passage of waator or othar Equiic s (iimpermciabil:iq).
Nallural Drainaga Feartunes: Mcisci arca nasally aaauning attrih u� cis of an area Ail. lichl acaammodate
thla flaw of stormwaten, suah as ]land cover, strieamis, riivens, lakes, and wetlands. Ceinerallly,
unaltercadyl unimproved natural featurcis are aapablla of accomrriadating a 2 year storm event.
Nonipoirit saourcae pollutions: This is the iinlraduationi of physical, aheimiaad, arid/or biologicaal
impwit:icis irito a water column frami diffusei and urdaaurnenitectunknown sauracis.
One Hundred (ll O(I) Year Storm Event: phis :i s the magr iitude storm that has a or.ie (ll) percent chlancae
cif Ibeing equaled ar excecideid :in a givemi ycian.
Pre-develapmieint caonditions: Thase are thea aandiitioris (rie:lief, land cover, and the rates, volume and
c iiractiian of stormwaater runoff) w�hliah arca presanll at a site priori to 11.1am
la aomenacamenat of land
c iisturb:ing actiiviticas.
Plosl-davealopment aandillions: Those arca the coniditkins (Irci icif, land coven, and lha rate, valume and
dircactian afl stormwaatcar runoff) whliah are prasenl at a sites follawiing lhei completion afl land
disturbing activities.
Camra roily Develarlinenil nlellarlrnenil Inidliaini Hiner Couinily 3
Comprihemsive Plan Silarnimiater M anagenient Suit-Hlemend
Rcitenti an Strulcll urci: 'Bis i s a strulcturci dusignck ala aal lecit and preivarit tho rcilmisci afla given amiount
of stormwater by comp] cite an-sitci storago. Thle bcinief is aflor.rs:ile storiagci of stormwiatcir iniclludci:
reduced vee oaity of stormwiateni runoff, setlling and filtration off odutanits, and recknige aflaqui fdrs.
9tarrniwjataii runoff. This is the flow oflwator wH:ia11 results from a rainifa:lll evcml.
9tarrniwjataii Mariagemant facilliticis: THcise ane man-made strucrturcis and/oii 0nhanocid niatural
drainiago fdaturcis dusignad to coallact, oanvu3j, hold, divert or disaHarge stormwiatar. May inolucci
sllarmi sawars, swales, aania'Is, detention structures, and iietarlion structurcis.
8wia:lti: TMs is a stabillized and/or grassod tricinah wiithl slide slopes less thlandulee (3) flet Horizontal
to one 111; foot vertiaaa. A piiopaiily funct:ianing swale sHaullc aonvay starrniwjateui runoffs while
p lravii c i ng same wiatar quality tread m ent, and rciqui rinig minimal nimal mai ritenanaci.
Ten (10) Year Storm Dvenit: This is ilhci m agnitudo storm that Has a ten ('0) plciraent chanaci oflboing
equaacic or 0xacieded in a given year.
Twenity-five (29) Year Storm Flvar.it: Thlis is tHo magn:ituc a storm thal Has a flour (4) pcmacirit chancel
of being equalac or axciaeded ini a given year.
Thle followiing soil ahanacilaiiistics are dcifincid by tha UnitOc Stales Deplartmarit of Agriaullture's
(USDA) Naturall Mesaurae Conisarvat:ian 9cirviae (NRICS) in the 19811 Sail Survay of ]Incian Rfvcir
Count)]:
Excossivaly Well Draanck: Those arci sails :in wihlichl water is r0mav0c from sail vary rapidly.
Exccissivaly crainied soills are aommonly vary aaans0 tuxturcic, rankyl, or shalllow.
Somciwhat Hxacissivci]y Draindd: Mesa ane sails iin wihlicH water :i s rurrmiovad rapidly. M arty arca sandy
and raps c ly porviaus.
We'll Draiincid: THuse ara sails thilaugh whicH wiatar is rcimoved readily, but not rapidly, and are
commonly medium textur0c .
Moderately Wool Drair.iad: THesa are sails in which wiator:is iiemoved samewflat slowly during some
periods. Thay commonly Have a purviiaus layar in ar diriacitly bellawj thle uppaii part of 1110 soil pliofila,
or peri:iadiaal'IN iiecuive high ria:inffill, or botH.
Somawhlat Raoray Llraunied: 11hase arca sails :in wh:iahl wiatur is ramoved slows 0nough 1Hat the soil Is
wart fern signifiaar.it pariods during thle growir.ig seasoni. Thlese sails aammonly have a pervious ]layer,
a high water Table, additional waiter frarrmi sciepage, or a aambir.iaCan aflthese alemar.its.
Community Develapmenit Department 1 nid ian River Cauinity 4
C cimprehensive Plfiti Starmwatcr M2riagemanit Sub-Elemeint
Poarly Dlriaincid: Tlhcisci ane soils in which) water is remo-Aed so slowayl ilhat the sail ncimains satwailad
for long periods. Paar drainages results from a l igH water table, a slowly pervious :layer w:ilhin ilha
profiaci, scicipage, oii a cambination afMesie cilcimants.
Vlery Poorer Drained: Tlhcisci arca sails in wHicih waters is iiemoved so slowly from thle soil thlal frea
avatar riemains at or near the surf doe during mosit ofltHe €hawing season.
AG E NC IE SI INVI OLVE D l N SITORMWATE R MANAG E MENT
Many €lavernmar.itaa agunciies all variaus ]cive:lsi (if lgavarnmenit havci sitormwatcir jur:isidicilioni within
Indian Riven Claunty. A dosaription aflglavarnment agencicis and 1lhair rcisponisibilities f Blows:
F ed viral C ci-* ern m emt
➢ Federal Emergency Management A gem cry (FEMA)
Tlhci FEMA indiractllyl riegulates stormwatur managamenit and flood pnotacit:ian ini Indian Rimar
County. It doesi sio by establisHing rcigulations kir the federal flood insurancia program. As a
parliciipatinig ciammunity in thle pnogriam, Indian Rlvciii County, musit ciamiply witH FEMA
raquinemenits.
In 1988, FEMA prapaned a flood inisurancici rata study for Indian Rivan Claunty,. That study included a
techri:icial analysis aflthle ciounq to dcrtermina thla limitsi of coastal flood aanas, thla 1Q(1-yciar f acid
plain, and thla 00 -year f )acid plair.i. Nalural floodways and man -mac ci channals ware analyzed using
tle U.B. Army Corps of Eniginecirs EEICI avid HECII Stormwatcm Computer Models. This
ciompnehlenisiva analysis aflflood ellcimatians provided useful data to regulate flload platin avid f. ood
way anciraachmenit. Rucenlly, FEMA began a "map madarniaatian" praaess, wHerciby Flood
Insuraniaci Rate Maps (1111RM!s) fkr 11 ci county ane bairn€I updated and diglit:iacid. TiHis update ofltHe
FIRMS is on siahcidule to be comphited in 201(1.
➢ Natural Rlesourae Con servati ani Slervi ae (NRCSI;
Title fkirmar Soil Clanservation Sarvica (now tha MRCS) aampletad a detailed sail survey foci Indian
WIvaii County in 1987. TlHat sail survey is useful in ketermininig 11ha drainiage and paiicolationi
aapaaity of sioilsi. THe soil survay Has bean digitized anti is a l cilpful too] fbr analyzing water4led
aor.ik itiomi.
➢ Env iron mem tal Prcrteicitioni A g(incy (IEP A)
We Ef A raviews dnadge and fila permit appliaat:ions under the U.S. Army Carps of Fin€1ir.iaersi
IJACOH; permitting authloriq. Halt gcinciies monitor avid parmit fill activity allang thla Ind:iar Rlivan
Clommunfly Develcipmeril Eerlarlmerd Incliari River Courtly
C oimpreN enisiive Plami Starmwaiter Management Sub -El ement
Magoon (IRL; , wliarci fllocid prone weit:larids provid(i f lcicidwater storages. L ndeir authors ty of tHo Wator
Qualiiq Aat aMS187 (a.k.a Clcian Water Act (CWIA)), tHo EFTA is reisplonsibla for issuing National
Aollutani D ischlarga Eliminai ion Sysnl cim (N PD ES) permits ftir paint and none -point sources di sclhaiiges.
Basidus areatir.lgl 11hei NFIDIES plragrami, the CWA of 151 17 estate llishcic thci Naticinal Estclaryj Program
(NEA; . Unidcir That program, the Indian River Lagoon was identified as baingl an estuary of naiionlal
significlanae thraatencid by potlulion, overusci, Enid duvalopmenrt. In HI511, the EPA :initiated the
Indian Rllvar Lagoon Natianal Estuary Program (IRINFIPI). Thle IRINEFI was ahlarged with
developing a Comprahansiva Conseirvation and Managemcinit Alan (CCNU PI) to (insure prusorvation of
tho )RI's eaosysi em through) aonsonsus-driven duaision making and problomi solving). Flina:l adoption
of thle IRLCCIMFI,"ias aompllcit(id in 19q(. 'Uha ftiur prol]raml goals adoplled ir.i i1hci IRL CICIMA arta as
folkmis:
Ta acs' ain anc mainlairi waiter arse sec imenit of sufflcienr quality to suipplar a t ea tt y estuarrine sysilem;
Ta Wain and mainlairi ar funiclinning healthy ecasyslem Ahich suilporls enidaglevee and lhieadenied
species, fist eries, commerce avid recvealian;
Ta achieve heiglhienied puihiic awiaiieniess and caarc incl ian aflirterargenq maniaglerrienit afltt a Indians
River Lagoon ecasysl erre and
Ta is enitify aur: d develop) ling -term furlding sawices far pi iavil ized plrojecl s and plrogigns to preserve,
pratect, vestave and enhance 1he Ind'ar River Laglaan system.
Statu of Fka id a
➢ Al arida Dflpartmunt ofIEnviranmein itaiI Bnotelctioni (DIEM)
The FIDES, unc cir the autHoriq afIFIAC Chaptur 62-3, roviews and permits starmlwater diisohaige into
waters oflthle Stata to ansurci thlat state waleir quallity standards arca not exaaeded. In 1986, parmit
authority was dcdegaied 10 tHa 81. Jlohnls liver W atur Managemorvl D islrict.
In 1969, two (2) aquatic prasurvas worci estate 11ishad in Indian Rivur Caunty. Aquallic Preserve #1
extends from Mallabar in L'ravard County to thle r.iarlharnl City limiiis of Vero Bcia(ih. Aquatic
Aruserve A -A extur.ic s from thle saullharrl City limits of Mciro L claeH to the Flt. Flieraci Inlet iin St. Lucke
Count)). In 1975, thle Fllark a Aquatiicl Erescirve Act dellclgatcid the responsibillity oflmanaging 1lhase
aquatic preserves to the Fllariida Dapartmant of Nal ural Rasources (now DEB,.
➢ Vit. Jlohmi Rivar Waters Manapmanit District (SJRWIMD)
The SJFJWMD, urdar tha authloriq of 4OC-4, Fllorida Administrative Glades, raglulatas the
managemanll and storaglcl of surfaca Maters within tha St. Johns River Basin. Tho SJIRIWMD
ancompasses an arch of over 12,400 square mules. Within its boundaries are the St. Johris Rivar
L asiin, the Nassau Rlvar P asiin, the Fllorida portion afhlha St. Mary's River Basin; and savaral coastal
drainage basins, including a majarity ofliha Indian River Lagaon (IRL). Indian River County, whiclh
Clammuinblyj Develapltrienil Eleplarlmiennl In Duni River Cloumdy 6
Ccimprehenshie Plan Silarmwater Manogerr, et 1I Suit -Element
hlas wiithin its boundaries 11Ici uflpor basin oii headwaters afltho St. Johns Rivera, is or.ici aft 18 count:icis
that arca under 11hea jurisc ictican of the SJRWMD. Thea SJIRWIMU owns morci than 88,(1(10 acmes ofthe
811. Johns Marsh in thea weaslleirri port:ican of thea County.
The Uisllrict autivealy managos thl:is multi-usea property ftr wialleui conserviallioni, f cacac clor.rtrol purposes,
and allhear purposeas.
A c apteac sin 1987, thea Surfacca Wlatear Improveamianl Managcament (SWIM) Aclt diricicltod thea SIR WM D
to deavcalop a SWIIM Han for the IRII. 'Hhca scaopca of the IRLI SWIIM Alan is similar la that caflthe
IRLCCMA. Duci to tho mutual simiilaritieas of thosea two programs, the IRLNHP was :inteigratod'tA thl
thea IRL SWIM priogriam upon adopt:ian oflthle IRLCCMA.
➢ Florida Department of Transportation (FDOT)
Uhidciri the authority of floriida Statutes Chlaptcni 333.02, the FDOT owns and maintains numianous
ftacailAies wh:icahl pravicea diiainaga for major arterial roads willhin Ir.ician River County. The U.S.
Highway 1 corridor, for axampla, is drained ty many cautfWl ditclhas and canals. Those clanalls have
deafir.iad drainage basins caasll of tho Atlanlic Coastal Sand Ric gci. The ADOT parmits conned ions to
stormwiater managcament fac:iIitiicis within BE OT rights-c&way.
Local AgEancieas
Within lndiian River County{, seavcral agenc:ias have starmiwateir management responsib:iIit:icis.
➢ Indian River Count31
Inc iani River C aunty has primary stormwater jurisdiction ovcni majoii outfalls within lhca following
areas:
➢ Unincorporated areas not imcduded within the limits of Special ES Chapllar X198
Urainago Districts, States of Alorida road righlts-of�way, privatea undovalopeid land
wihcire no davelopmcml has ociclunicid, and property owned by tho Statci of Hanka or
tho Indian River County Sclhaoll Uisllrict.
Iniclorporatcid arcias within clounq road righlts• caf�wiay.
Sacondary drainago facliliilies (miir.icar swales and fac:ilitiicis loading to outfhlls) wihichl
arca mai nta:inead by tho County and local cid within c cadical ed caascimerls or ri 8hts-of-
wiay in the unincorporatead arcia. Whi:lea County Ordinance 82-28 cistablishlad the
county's authority to reagulatea stormwiatear manageament priactices, thlal aulhlcarity was
incacarporaled inlo thea Blood Arollcactian and Stormwiatcr Managament chlaptcni of the
county's land dcavelopment regulations that was ac aplad by LUR Chlaptcni 930. The
Ccimmur it] Development Department Ilin dlian Rich Caunt31 7
C c mnreli emaiivei Plaine Stc rinmia tear Management Suit -E leimieir it
Indian Rivcir County Hublio Works Departmiant is chargcii Aithl admin:istorin8 LIDR
Chlaptcir 9:10.
➢ F.S, 298 Spficiial Drainage IAistriets
Wator Coni Districlls hlavci lhei authi to cionstrucit and ma:inllain primary drainage fauilities
w:iilhini lheiiri silatutory bouni anies. At tho proscint time, theme are five acitive dra:inai c isiricts wilthlini
In6an River County. Thlese arca: tha Ir.iiian R'vcir Farrns Water Coni Distrid (IRFINMCD), the
Set astiani River Improvament Districit (S RID), lhle Ballsmeiiie Wateri Conitro:l Districit (AWCD;, tf St.
Johuls Improvemeni District (SAID;, ani thla I]eilta Farms Walar Control Districit ilDBWCD).
);, I nconplorated M un iciplalitieis
Incorporated muric:ipalit:ieis Have homa ruila powcirs ici constn:iat and maintain starrr.waleir
managgament faciil:h ies withlini thleir airy owned easements, righlts-cif way, and praparty. 11hei
incorporatcid mun:iciipa:liticis withlin Iridian River County inicluda: the City of Vcwci Beach, thle Cityof
Sabaslian, thle Town oflIndian River Shlores, thle Clity ofIFcillsmerie and tha Town of Orchlid.
➢ Intimate Sylstumis
f rivatelly awned agricu:ltwial operations and develapmants within the ciciuntyj awn and maintain
privalla stormwater managamient fkilitias.
Clommunily Devc1cp1meml Deprlmenill Incliani River Coumly{ H
CarriprcheniOvePlay i SIlormwalerMar ageimenl 'Sub-Elament
EXISTING CONDITION S1
Located within the Guafland Atlantic Coastal Plains ofllha Unitad States, Indian River County has a
low and flat coastall platin lapagraphy. Wilhin thea aounty, there is a ncirlh-south banding cif
physiographic reigions orientac approximalely paraalel to thea Atlantic Occiani. Two rcigians ofllow
relief, tha Elastern `ialleay and Iha C central Malllay, ciarriprisci must of this area. 11hraughout most of ills
aourse, the Si. Johns River allang with lhei Atllanitici Coastall Sand Rldgci separalei the Eastern Valley
from thlei Atlantia Oaean. Approximateily H% oflthlci county consists ciflmarshllands.
Toplograpliy and f hysiugnapliy
Generally, Indian Rivar County is an area of low rellief representing several ariaianl rnaninie tarraces,
each marking the ocean bottomi al limas whlan tha sea ]lavel was al a hiElhar alevalioni. Two tarraces,
thea Aamhicio Tearrace avid tha Talbal Temiaca, traversa tha ciounaty. Covering the area from tha coast
inland abaul :I4 miles to thea western edgci of the St. Johns Marsh, thea Plarrdico Tearraae is mostly less
than 25 feal above sea laved. The lenaaaa :is broken by threca distinct ridges. These ridgeas arae: the
Coastal Barriar Island, tha Atlantic Coastall Sand Rlidga, and tha Tan Mile Ridge. A dditionaal
infarmaation ragarding the topadraphy and phlysiography oflIddian River C aunty :is containac :in the
C anseniati(in Elamiant.
Coastal Banricr Island
The aaslernmosl r:idgca is thea Barn:icar Island. glhat ridEla is the prcascant beach arcaa of the ciounq and
visas to appraximiatedy 20 fecrt above sea level. Bcahind thea Barn:icar Island liens the shallow Indian
River Bagoan (IRL).
At] antic Coasil a 1 Sa nd Ridge
Approximataly one-half Ito orae -male wast of the IRI.I lies the Atlantic C aastall Sand Ridga. Thal ridge
is ovarla:in by tha Illarida East Coast Railroad (AEICRRI) and U.S. Highway #11. "Ilha ridge Has a
hlistoraic maximum hleighlt oft approximatelly 34 fbet, but savaral places along tha ridge hava been
raeducad in alavatian dua to excavation associated with sand minting and devealopment.
Ten Mile Hidga
Known ]anally as thle Ten Mile Ridge, this r:idga is ovarlain bythea Intarslata 95 corridor. Ara -dating
tha Atlantia Coastal Sand Ridge, tha Ten M:ila Ridgca has a maximum height aflapproximatealy 3-I
feat. Both r:idgas aonlribute to thea raeciharge oflthle surfiaial graundwatar aquiftir.
Comrnumityl Ele-telopIment Dcpartment Indian River Clauntyl
Comprehensive Plan 8lormwaplerMat agemend 8uib-Elemenit
In ter -r U gfi A Yea
Betwlecin thea Atlant:ici Ccaaslal Sand Ridges arid the Teen Millei Ridge ]lies a flat shallow deipress:icn
iieferncid to as thea Initar-ridge basin. In its originiall stallei, thal basin hlistmically drained northward to
the Sault Fror.ig of tho St. Sebastian Riluar. Taday, hlowovar, thlci southern cind of tha Intor-riidge basin
is 1lrauerseac by a r.ietwork of drainago caaraals. Cor.iseaquonlly, only a smalll portian of this basin in the
niorthl part of thea County still Grains to the St. Sebastian River.
St. JloHns Marsh/Uppfir St. Jlaahns Rivcir B asin
West oflthea "Ileani Milei Rhic €lea is tha broad flat area of the St. Jlcands Marsh). Whiles thea vwestorn edges of
the marshl is realat:ivoly flat and about 25 feet abavci sea leaved, thea ealovation riseas to approximalely 40
feed abcavci soa levoll near tha In ian Rivor-Oscaeiola County lir.ia. That formation is knlowr as tho
Tallb all "Heinaacci. Batweaen the Talbot Ternaae anid Intorstal ei 93, the arcia i s manishy and poorly diialineid
withl some drainagle improvemieints slaving boars mado to barief:it agr:icaultural inteaiiests, incaluding caitrus
graves avid caatt:lei rancaheas.
A langea portions of Iwasl arni Ik ian River County is caaveniad by the St. Jlohnl's Marsh, making thea mar4l
a rnE jori parl oflthle natural dra:inaga system. Although thea marsh is thea hleadwaators ofltho St. Jlohhs
River, the rimar's ahlannieas are not woll dafmcad withlin thle marshl. Part oflthci St. Johns River systorn
is Bluca Cypress Lakes, whiahl is thci laarge:at bady of flrashwiatcar :in thea caauntyl. 11hulcauglhout thea marsh,
niaturiall drialinaga fllow is to thle northl. Consequently, much of thlis aaieia is awned and managlcic by thea
S IAW MD for f food aontrol arid irn:igation.
Rleiccintly, the S114WMD aomphillad a m a jor restoiiatican pro feat fkar tha Ulppor St. Jlohnls River Basin.
That pro fecal invalvad caonstrucating a number oflwatcir caonlrol strucatures fbr the purposea aflrollurning
agriculltural wands to waetllands. A beaneif t afI Ihei piiojecl is that it rciducaas tHa necid Mir ficishwatar
discaslariga into the IRL via 11ha CI -_I4 canal. By reducing thea am ounl caflflrcishwater f.lavw from thea C-14
canal) to thea IRL, the reastaration projoat has improvad water quality in thci IRL. Addidionial
information about thea Ulpper St. Johns River Basins is cacanlained in 11ha Coniscirvation Blemeant.
Cli mall f
Tluloughout thle yeah :in Indian River County, rainffll is uncivcinly c isllributed. H iglcarically, the most
rainfall] has boar.i recacmdead in thle miontsl of Septamberi, followed in order by July, August and Jlunci.
Nearly _10 pcarciant caflthle annual rainfalll occurs in thlesa fbus manths. For thci period from 15111 to
2(1(10, rainifala averaged 51.93 inches per year (rnaa:aurcic at tho Mero BeadMunicipal Airport; .
During than peiriod, thea higheasl and loweisll rainfalls rocaardcic werci ((.7 inches in 1991 and 32.7
inches :in 15161 (National Waathor Sarvico' .
CommuOy Develaplmerill Dleprlmerd Ikihiini Piver Caumity 1(I
C ompreh er, s ive Plan Starmimiater Management Sc ib -Elea er 11
Sloills
Within Inidian River Cauntyj, therci arca 8 cifferent soil types. Bascic upon drainage characiteristicis,
theses soil tyljcis arca grouped irlo llvleie genieral cats€larieis: poorly crainied soils, madoratcly drainied
so']s and exccissively drlaineid solos. A specific descaliptian for eiach of thle drairva€lei characteristics is
corlaincic in the dcifinitians sciation oflthlis cilemcint.
Gcnciral:ly, "excessively dilainicid" soils consist afldeep sandy soils thlat are found on nearly lleivel to
sircnglly sloping dune -Eike ridges and uplands. Thosei soils arca oftcr.i associated with sane pine scrub
areas supporting blackjack oak, aivei oak, and sand p:inci. Examplos of undcirstory vegcilatian includes
saw palmotio, sand heiath and Indian grass.
"Modciiiatcily Grained" soils aile typically decip sandy soils that canllain mar'nci and aciolian sand
scidiments. Thosa soils arca associated with coastal strand and sand pine scrub arcias, cliaracturiaeid by
sand pini, slash pine, and 11angleiaflpinci as dominant ftecis, and saw palmetilo, cabbage palm, and
inkberry in the undarsllary.
"Foofly dnainad" soils consist of nearly leivel soils deve:lopcid in laarny and unconsalidatcc marinci
sands and laamy sedimients. Thosei soils axle assaciatcc with cabba€lci palm flatwoods, southl F:larida
flalwoods, and slaughs. Examples afl daminant trees include slash pincis and :lang:loaf pirieis, whlilci
the undeiistory is typically cabba€lei palm, sand aandgrlass, and saw paameitto. "Ilhe Canservalion
Elciment and thea Natural Groundwater Aquiftir Recharge Sul-cilemcini contain additional soils
information.
F1aadr rcme Arfias
Far cammiunitics, such as Indian River County, withl coasts subjecll to slarm events, the occurrenca cif
flood:i is an importarvl cancern. C enerall ly, a f. and hazard area is any land that is susceptible to being
:inundatcid by walar fiom any saurce, while flooding is a temporary condillion of parfal ar oampleto
:inundation oflnorma:lly dry land aneias.
Hlislorica:lly, largo portions of the county wera low and swamipN. A:111 aught many oflthasci awas hlavc
becin dra'ncid to permit davelopmcini, scivara:l arcias arca prescinlly subject to periodic flloading. Mlosci
floodprona areas also tend to be arcias hlav:ing sails characterized a:i being "paorllN" ar "moderately"
diia:incid. 1711acdprlone areas within thle IRL watcrshled includa:
➢ thle Harrier Island, southl of 11.1a C:iq of Veto Beach
➢ thle Harrier Island, north aflthe City aflIndian Rlvaii Sl arcis
➢ the mainland, balwacn tha IRL and tha Allanti a
C aastal Sand Rldgci (U.S. Hlighlway #1)
C aura cin illy E evelarlm ant E aparila enil Indian River C aunily ] ]
CcuriprehensNe Plani 91ormwvler Maniaigemenil Sub-Elemenit
➢ the malnllanid, coast ofland adjaceanl ala the Ten Mile R'dgcl (I-95)
➢ the mainland, west aflthea Teen Mile Rliic�lel
Throughout 11he1 Indian River County arc ei, floods can occur anytime during lhel yelar; howeavelr, they
area must frequent during thcl summer season fromi May to October. In Iridian Rivclr Counity, streams
and canals in the "inler-ridge" araea (betwiecan thea Ton Mile Ridge near I-95 and thea Atlantic Coastal
Sand Ridge near U.S. Hi�lhway 1), cis well as those that discahange into thcl St. Johnls Rlvear, arcs
subject to flooding ftom pralorgeld hcieivM rainifaill. Low, swampy inland arcaas (i.ea. palustrincl
(freshwater) wetlands' arcs also subjeal to periodic flooding during weat pearioc s.
]In thea eavant of hurricanca ar trapicaaa storm acativiq, aaasilal arenas of thea aour.ity ori the oaclan arcs
subjeal la storm surges f aadang. Aaong thcl Indian Rlvclr Llagoon, for eamample, areas may clxpclrieniccl
fllaading from stann surge caused by a tropical storm ar hurnicaane. While a flood insuranca study by
the Fcldclral Emeargeanay Mananlament Agency (FEMA) rclftlrenaels storm surge lelvels that arcs rclportcld
to have been as high as 4.3 fciclt abavcl mcaan sea levclll (MSI; in lha ]IRL, storm swga llavels in the
Atlantis Ocean kava been as high as five) feclt abova MSL. Coastal f,laading hazards are further
disausscld in the Coastal Mariagornanat Hlemear.it.
During f,laod clvanats, floadplains provide fhr natural overflow of wiatclrbodicls. Wilhin thcl County,
floadplainis area eaxtensive and often overlook) saanic wiatearbodicis. IElue to thle ewteanl aflf ocic plains in
the ciount)l and lha deamiand for deavealopment, building within flood hazarc arcaas is incavitablcl.
Wctland s
Within thea taundarias aflIndian River County, there ana two larges weatland arcaas. Those ara the
Upper S1. Johnls R'vear Watearshed (USGS Hydrolog:ica Unit #030801(11) and the) Indian Rhear Lagaan
(IRL) Walershead (UISGS Hlydrologia Unit N-J0802(12I; .
Ovclrall, the Upper St. Johns River Watearshed cacanlains morcl than 88,(1(1(1 acreas afl palustri ie
(frashwiatear; wetlands. Combincad, thcl St. Johns Marsh (±68,I_IO acres) and lha Fort Drum Marsh
(±20,(100 acres) aamiprisea thea majarity aflthe watershad. Within the watershad, Blue Cypress, Lake
acres) is tha ]largest oplean water caomponear.at.
The majariq (if lthe :i 1(,30CI acre IRL waler,heac is composcad of opan water eastuarine weatlands. Of
thosea 16,=1(10 acres, rnarea lhani =1,2(1(1 acires area impoundead fbr mo, quito cionlral. Approximately `100
auras of rivarine weatlands are assoaiatead wiith thea South) Prong aflthea St. Seabaslian Rlvar. A dditianal
informatian ragardirig thea lacations and type, wcatlands in Iridian River County is conitainead in the
Consclrvation Eleamienat aflthcl Carnprclhelnsivea Plan.
Can muniit] E evelapmenit Depfirtment 11nidliain River ( aunty 112
C amprcll er side Plan Starmwiater Management St lJ 4 Icirierd
Indian Miver Lagcion WatershIcid
Thea Indian River Llagoon is an cistuanine system that axlends from Ponce Dei Leacan Inkil :in lklus:iai
County to Jupiter Inlet in Balm Eleaach County. lin lincian River County, tha lagoon's walenihad
eancaompasscis the mia'orit)I of thle eaaatern portion ofI1ha county. W:ilhin Indian Mor Caunt)I, tho
wiaters of the IRL receive an influx of saltwater from thea Atlantic C caean. Wh i lca thaat saitwall eir passeis
througbl tho Sebastian lir.ilet aar.ic the Flt. Picarcae Inlet, 1lhea 8t. Seiba:atian River, drainagea canals and
over]anc sihaeit f.lawi provide freashwiater inflows to 1ha laagoan. Besides those cahanactearisticsi, ocean
exaharagea, ria:inf411, stormwiatear runofIlanc cavaporialion all contrnlbuteta 1lhe estuarina charactearist:icis of
tho IRL. Conerallly, salinit)I leveahi in i1hea IRL range fiiorri 4.0 i1a 4(1.0 parls pens thousaric (ppt) and
avoraage 26.1 ppt. Salinity leaveis are highest near 1ha inlet:a and gradually declinei to their lawest
Rivals withlin 1lhea City Limits of Mero Elcaach. Figure :I dep:icat:a tble draainagea basins in Indian Riven
County.
5 cibastian Ri vcn I mpi civcimean t r i sitrict E asin
Flormienily known a:i the 8cibasllian Rlvear Water Control I1isllrict, thea Seabastian Rlveiii Improverricar.at
District (SRID), was areiatec in 1927 as a Chapter FI.S. 298 8pecaiall Drainage Dlistriat to flacillitallea
dave:lopmoni of agricullural lands. Currently, thea d:istnicat caonstitutes a separate basins :in tho county.
Serviiae Ai as
The SRIII is lcacaatec north afl Walkar Avenue (2(thl Streat), east ofl90tbl Avenua, arae saulh of 8-I1h
Streaeit (Wabasaa Road). The SRIDI inaluc eas 11hea Canal "C" (whiahl runs north/southl along 82r.ic
Avenue) and Dlitah "DI" (wihichl runs ncarlh/south allcang 90th) Avenue) sub -basins. Combined, these
fbatunes drain approximallaly I Iff 7 acare:a.
T atural Fleatuncis
Sloping northlerly towarc s 11he Sau11h Prong of 11he St. Sebastian River, the SRIL1 is relatively flat,
with an avearage calavatian of 120 fecit. Soils preseint waithlin this basin :include the Rlviena-Bineda-
Wabaasso :caries and thea Winder-Rivera-Manateci series. Eloth soil series are calas:aified as "poorly
draincad." Dlue to rolativealy paor draining soil aand:itions, lha vuater table alevalions are one to two
Ricit balow graund during thle wat season anc approximately foul feet balow graund during tho dry
seasons.
CarrimuriitN Favelopment Department Indians River Courtly 1?I
VIRMINNO
j/
i=�J•JJ.
Cumprelhemisivfl Plan Slormwflller Manaigelmerd Ault-Elelmfmlt
Fllaad Zones
The northern portion of the SRID basin is protocited from the 100 -year f. clod by a lavee Ilaaatad alang
thea Wiest t aundary of the SRID. A acording to a 11BMA study, hawieven, the levoci aould bei broachod
by a storm 8roator Than a 1(1(1-yciar sl arms avert. While the southwest 900 acres of this sub -basin al sa
aie within a 1CICI-yaai f]laadp:laini, bases flacld elevations haves not t clan dal annined for thal arcia.
Lar. d Use
Ilisted bellow are the aslimaiad aclreagos for the types oflland use wiilhin tha SK D basin:
Classifia a I is n
Es l imat(d Aa r(a ge
Cim s
9,600
1 astme
713
Open Watan/Wetlands
231
Ran@aland
210
Ra s ideml ial
176
01hea
87
Witt an avarage size af121(1 acircis, thara ala _`I1 agricu:llural aparations loaated wlilhin this basun.
Operating Bntitlias and Jurisc ictlianal Rasponislibilities
Whale lha SRID owns anc maintains Car. all. "C" and connecrting latorals, Irk ian Rivcui C ounty owns
and maintains the roadway crainage fac:illiticis along 82nd Avanua, 141h Avanuo, CRI _`110, and lha
othar eastlwest aollclators. Although tho aaunty, in aaaparationi w:ilh privala property owrialis,
maintains Ditah "D", irkividual gnciva ownars ma:inilain private agriou:lluiial crainiage systems.
Capacity Analysis
Currently, tha SRID and SJRWMD haws a cost -shard agreerrant to fund davelopmanl of a
stormwiator maslen basin model for tho '19RID basin. Onae devellapad, that model wii.111 bei usad to
identify :facial flooding prat len arcias, :imiprava water quality diisaha ages, anc iimpiiove managemor.it of
the avorall drainage system.
Water Quality
Currclnlly, thcl dala for thci SRID basini aie :iamciwhal ir.iaompleila. Aaaonc in81a availat Ila DEH data,
this t asin exhibids tha f6.111ci wing problems: high nuilrientt loadings; high lavals afl turb:idlity and
Cummurlit3l I]elvellapmemlt Department 11nldiaml Riwir Cclunt31 14
Carriprehcrosiva Plani Sltarmwaler Momiagamert Sub -Element
sadimanllat:icm; ]law lavals ofdissa:lvck axygan; and, decilining fisharies. Thosaprobllams aiie:lange:ly
atllributed to slormwarter ruriaffl from agrIciulturall operations. Acaard:ing to the SJRIWMD,
agridulturall-I ascic loadiings ora responsible fl`ir more than 9_`I parcient ofl the total llaadings for
nutrIants,'HSS, and flow.
St. Sebastian Rimcm Basin
Thraci (3) sub -basins have been ideivified within This basin. Thlosa sut -basins ir.icilude: thle C ity ofl
Sebastian, whliah inciludcis tha Sabastian H ighlands subdivision; lhla uniinciorparated Raselland araa,
which is laaated in 1ha northarn portion oflthe basin; and tha saulhciast par ion of lhla St. Sebastian
Mlvcir Preserve 511 ate Bark (Flaming Grant araa), which is local cid in lhla norl hwestarn portlan of this
basin, west of the South Prond of 1ha St. Scibastian River.
Locatad within lhla St. Scibastian River Basin, llha Vero Llakes Walari C ontro:l District is assoaiallcid
wilih the Vora Lako Estallcis residential c civelopmanll.
Servica Ar as
The 511. Sebasll i an Rivera Basin is bordered on the east by tha BECRR and 1 o the west by tha Belllsmerci
Farris Walari C antrall Distriat (IFIBWCD), an tHo south by Wlabassa Rcia d ( 83thl SbicieVCRI31Q, allan�l
the west by Channel "D", and extends to the narih Indian Rivera County Lina.
Located r. orl h of the SKID, tha St. Sebastian Rlvar Basin rieaaives disahaniga frari Basins 1, 2, 3 and
4 via tributar:ias laaidinig 110 tha South Prong cif tha St. Sabastian River. Tha Sebasitlan Rlvar, Coll:iar
Ciiaek, and Ellkaam floodways f law thrioughl this basin, w:ithl s11 ormwater runoff ufhimatelly di:iahlargimg
to the IRL. Ma Roseland sut-•basin contains thAici small sub -arias (]lass thlan 300 acresi) wh:iah
inclluda: Flriog Lleg Creek (was11 Rloseland),1:1811h Strciet (Centrlal Rloseland), and C ibsan Straet (130th
Streef .
Tha southeast quadrant ofl the St. Sebastian Rliver Hascirva Slata Park is lociatad within tHa
northlwastarn portion of the t asiin and aordains approximalcdy 3,000 acires.
Nalural Bealuras
Tha topography oflthe area :is ralalively flat, A ithl elevations in 11.1a maid -20s (fee11' above MSL. Tha
1 cirrain slopes gentllN towards the 1lributariias aflthle South Brong of tha S1. Sebastiian River (IC alliar
Criecik, Southl Frang Crciakl, Fnog Lleg Crcicikl, atc.). Dlisahaniga from thlis basin is to 11hci IRLI.
Soils in tha area are pradominatelly lhla Bau Gallia-Oldsmar-Wabassa seri cis and the Rliviara-Bir.ieda-
Wabasso sen:ias asso6ations. Dlue to poor drainiage chanaciteristiici.i, the wal seasons wataii 1lable
alevallion is within ana to two fMet of tho surfficie lhiloughout the miost of tha basin.
Communily Develarlinenil Dellarlmienil Indian River Caumly{ 1.1
CompnehenisiveiPlan Stariumatein MamiagemeintStU-Elfurienill
Structural F eat urns
Within the uninaorparated Cauntyl, starmiwalar runoff from tha Rlosaland anaa is co:llecilad from an
area that axtenids appraxim ataly i ;000 fMet south oflRlosaland Rload and is conveyac nor h via swales
and aulvarts beneiathl Roseland Rload, thence to ilha South Prong (iflthle S1. Sabasilian Rivar. 11he St.
Sebastian River Buffer Hnaseirva is drainiad duloughl parimater ditahas and nalumal sloughs to lha
South Prong of lhla St. Sebastian Rivera.
Major struicturall f6atures in this basin :include: lha Ca:llier Craek Dame; the Blkcarn Dam, lha
Schumann watarway, and Liake Sahlumann. Ctheri slormwater managlamenit facililies miainitainied by
thle City of Sebastian wilhlin the watershad ane desanibed in the Cit)J aft Sabastian's Starmiwatar
Master Alan and Slarmiwaleri Managemierit Sub-e:lament.
• Flood Z ones
Excapt fbr small isolalad daprassionis anc tha f]loadpllain areas bore aring the tributaries oflthe South
Blrang aflthle St. Sebastian Rliver, lha miajorit)l of this basin is not localad within the 1100 -year flood
plain.
hand Usa
Urt an devallopmiant oacuns in the northaaslarn partion of this basin, in and around the City of
Sebastian and in the Rasellanic community. Tlha Sebastian Highlands, a rapidly davaloping s:inglla-
flbm.iily iiesidantial subdivision of 14,000 platted lots, aamiprisas tha miajonity ofltha southoaslarn
portion aflthle Has. -in.
aha uninaarponatac arcia of Rloselanc is a small res:idenitial community ]located along tha St. Sebastian
Rlvar. Wilhin thle Roseland area, aommieraial cavalopment is situalad alon€I the U.S. Eighway# 1
carridor. Thle St. Sabastian River Blreserve Stale Park areia consists of flat, undeveloped pine woods
and pasl ura land.
Openaling Enlit:ias and Jlurisdiat:ional Rlesponsibilitias
While starmwater mianagemenl facilities withlin the city limits aflSebastian are under the juri sdiat:ian
oft the City, wilh tha axaept:ian of CR _`112 (Aedlsmere Rload), small areas of the unincorporated
county, bel ween CR 5:12 and the southlern Iim:iIs oflthe City, draain north to thle Elkaam Waterway.
Sealions of the St. Sebaslian Rlver-•Southl Arang ane under tha jurisdiction oflthe C:iq, lha SKID,
Indian Riven County, and 111a Stala oflFlarica.
C ammuinhyj DevelkiAlmient E eparilrr ent Indiani Riven C ounly 1 E
Caminrehensive Plan Stcirmwater Man agement Sub-Ilement
Although portiicros oflRosaland fall under the jurlsdid ion afltlici Citi ofl8abaisllian, as wall as Indian
Rivar County, the majority oft tha Alerning Grant area its managad by the FDEA. Tho AUOT,
howaver, ma:inllains facililies along Intarstate 9f in the Homing Grant WatarsHed.
Water Quality
W:ithini the S1. Sabastian Rivor Basin, water quality its compromised by nutr:iarit loading, Haavy mcilal
coniaminallion, and High turbid:iq. Generally, contaminarits tinter thci bas:in's waters thilough
agricultural and urban runoffl W:illhin tha 811. Sebastian River, water quality fails to mciat Class III
standards (fishing and sw:imimiing).
Barnieir Island Basins 11S(inies "B")
- Sub -t aisin B-1
8 arvi ce Arcia
While sub -basin B-1 comprises the soullheirni ona••11.1ird oft Orahid Island, the portion within the
unincarporatad aour.ity extands south of Leaward Dane (wast of Highway A] A) and Shorewinds
Llaine (jaast aflHighway A 1A) approximateily three mules south to 1ha Indian Rlvar••St. Ilucici County
11ir.ia. North ofltHal arcia, sub -basin H-1 is within the aity of Maro Boach.
Topography
Within sub -basin B -:I, alevations ranga frame rnean sea 11avel (M81-1) alonig the Atlantic Occian to
bolwacin 113 and 11 fee11 INGMD along 11.1a pr:imiaryl dune, aplproximate:ly 30(I fecil west of the MSLI.
Si1ructural Haatures
RIel aining sl armiwal eir ninaff land provi ding perool ati on, grassed :wool epi run parall al to HigHway A 1A.
Wrist of Hi &way A IA, mast devel opcic ari haves posill ive drainages systamis which discharge to tho
IRLI. Sinca 1998, the Fllorka Department oft Transportallion (ADOT) has improved starmiwateir
management facilities weisl oflH:i�Ihway AIA to provide ratenlliori and treatment of runoff b afcirci :i1
cinleni the lagoons.
Flaod Zones
Hasl of thle primary coastal curia, coastal vcilociq ar "VE" flood aancis arca lacatod alon�I 11ha Atlantic
Ocean Com inc. Wast aflthci VIE Zone :i s thle MO Zonie, a narrow artia designateid as ai l (I(I-year fllood
C urr iain ity Develo[Iment Tleparil trier ill Indiari River C our 11y I I
Ccmipreihensive Plan SNormwvner Mariaigeimeril Sub-Elleiment
plain. Wasil of thio VO Zanei and aast afIHighway AlA Iieis flood zany X. Wast of A 1A, Zones AH
exileir.ids la thea eastorn shores of ilhei IRLI. Zlhat zones is part aflthle IRL flaadpllain.
Land Use
Deve:lopmorrl within Basin E-1 its almost excilusivaly small ros:idontiall subdivisions and scatteircid
singlo-f rriily rasideniceis.
Capacity Ana]Ns:is
Due to thiel excessive parciolailion ralas of ilho dunie soils, thcrei ara no ciapaoity runofflissues in sub -
basin B-1, with the eixcieptian of thea Maarings Subdivision (wrest of A l A'.
• Sub -basin B-2
Sarvico A.reia
Sub -basin H-2 wolands ffom ilha r.iartherni l:imiits of the Cit}{ of Wro Boachl to CRI 5:10 (Wabassa
Ram", incilucingl tha m:iddlla one-ilhirc of Orchid llsllanc.
Except for a grass swiaa a along North) W:i nil ar E aachl Rload, a drainage sN sil am within 'Wacki ngl Stat:i an
Park, a small parciolation system at Wabasso E aachl A wile, and a raac wjay swale sNstam along Junglei
Trail, Indian Aver Caunq naithler owns nor maintains any stormwatar mariagemant facilities within
sub -basin 2.
Topography
Typicial afIa Caasilal Barriiar Island, elleivatians in sub -basin B-2 ranga fiam Mean 9aa Level (MSL;
aking tHa Atlarplic Ocaan Coast:lina iia 20 feat NGVII] aaong the primary duna (300 feert wrest aflthla
coast:linci).
Structural Bealuras
East of A IA, al ilho nari h and of lhei b asin, thlei Claralslonei anc Sea Oaks devellapments ara dasignad
to parcialate runoff from a 25 year/24 Hour silarmi event. Wasil of A 1A, a series of drainage pipas
route stormwater runoff Ito welt retanlion/detontion ponds prior to dischlarga irate the IRLI. Since
1998, the Alorida Dapartment of Trianspartation (ADOT) Has impriovad silarrrwalari manaElamenk
faciililies wast oflflighway A IA to provide ratentian and i1matmiaritt oflrunciffl
Cc mrr uiriity Demellopment Department Indian River C aunt y Al
Caimpreihonsive Plan SNormwuler Manflaci ienil Slob-Fleimfmit
Haod Zones
Wiilhin sub -basin B-2, coastal flload zones "VIE" :is located along the acaast of thle Al lantia Oacian east
of AIA. Whlillci a substantial parlion of that sub -basin wast aflAIA is located within a 1(I(I yciar
floodplain, finish floor cilcvations above tha 100 -yowl flaad plains clevailion (7 to SI f6cit above MSL)
and ac ciquate floodplain silcaraglca caarrpensation triti€late the t1uleail of flcaoding.
L and Usci
The ma(lorit}j of land usci within sub -basin B -a is singly and miult:i-famaily rcasidcanitial.
Capacit51 Analysis
c imilar to sub -basin 1, caxcaess:ively c rained sails ciast oflA l A absorb and paraolate storrnwatcar runoff
from a 25 year)124 hour silarmi civentAhca caxi sling design caapaaiticas of the Caralstona, Saa Oaks, and
Island Club dcavclopments acacaommodatca a 25 yeaD124 hour storm evenil. Sir.iae small] individual
silcarmvaateni sysilcams exist, no ]ange publlic drainage faailitias arca priescirc
Sub -basin 11-3
Serviaca Aj as
c situated l catweaeni C R `I10 and thea north cacaunt� :lira, sub -basin B encompasscas thle northlern one-
third ofl0rchlid Is]and.
Topogriaphly
Within sub -basin B-3 , rclicaflrianges filami 1V1' L at the Allantia Oacaan C oastline to an alcavation of120
f6et abovea saa level.
Slrucatura] Acaaturies
Within the B-3 sub -basin, thea Summcarplacae Sul division containis swalca parco:lat:ion systems. West of
Highway A 11 A, c eavalopmerm s drain it a l argca rertention/dcatenil i ora balsinis wil ll caortroll ad wcairi discharglca
struicilurcas draainiinag to thea IRL. Scavaiial remaining albanidoncad aitruis grioves drain vmest via avarl and
flaw la cu lveri s l canaath Jungle Trail and into thle I IRIJ.
Sincca 1998, the Alorida Deparimier� afl Riansporiation (ADCT) has *improved stormwatcar
management faci ] iti cis wast of H i ghway A 1 A to provide ratenti on and tiieail m enit of I runoff l
C aiminuiniit} Llevelot ment Dep�irilment Indian River Counilly I S
Carnprehensivu Plan Stormwailur Mvmiaigemonil Sub -Element
Flocid Zones
Loaatod bellaw an alovation ofIH feeit, the western 3,000 feet of sub -basin B-3 lie withlin tha 100 year
flood platin, whlilla the eastern 300 fbet ofthlail sub -basin liewithin thea VE flood zone. Botwaarl thloso
two f Iciod zor.ias, lheire is a baric of f )acid zone N 111at panalllals Highway A 1A.
Land Use
Similar to Whet B-•seirias basins, sub -basin 13-=1 acinta:ins coastal Hammock) and law density residential
users.
Of prating Er iilies and Junisdialionial Reisponsibihity
Whale Indian Riven County{ c cies not Havel junisdialion not opeiiiationial nasponisib:iliq fir ilha port:icin of
sur -basin B-31ocaled will in the Town oflOrcil id, Indian River County hlas jurisdiiat:ion north) of 111at
areia.
Capaaity Anaays:is
At rri inimum, tHa design aapacity of l all systams within sub -basin B-3 is the 1(1 yeah 24 hloun storm
avant; however, newiaii devalopments flrov:idei caflacityj foci a 2� yeian/24 hloun storm event.
Water Qualit))
East of the Intracoastal Waterway, ilha IRL is alassified as a Class II wiailarway (Shalafish Propagation
of Harvasting). As su(iH, all niaw deve:lapmarits wrilhin this sub-basir.i ane rieiquined to provida reitantion
of rricra than or.ia incill of stormwiatar runoffl
Mainland IRI Basins (Seiricis "N")
Bloated along the eastern slopes ofltHe onie mi:la aciasilal ridge, seuies "RI" basins extend wastwand to
ilha frill avid ballast associiatod with the Florida East Cciast Rlailnoad IJFECRR). C anienallly, tHal area is
bounc eid to 111a east by thle IRL, lo 111a south by the soulllarn boundary of Indian River County, and to
ilha north by thle St. Sebastian River.
For purposes of ident:ifiaation, siluc y, and planning, ilha eiastern sllcapla cifltha cioaslal ridge is seiflaratad
:inta thrlea sur -basins. Sub-basir.i RI -1 extends from the northlern limlls of 11.1a City cif IN emo Baach 10
tha Southl County lana, while sub -basin 14-21 is boundac on the south by the northern boundary cifltha
City of IN emo Baach and to tHa norl hl by CRI 51(1. North of sub -basin RI -a, sub -basin R-2 ax1 anidsi frarr
CRI 5101 a the St. Sebastian Rliver.
CarnmuiniitM E evelallment neparlltveM Indivni River Coumdy 'I(I
Cairprehensive Plar Starmwailer Maniazemenit Sub -dement
• Sub -basin R-1 (South County)
Topogiiaphly
Typliaal of the east slope of the A llantic Coastal Sand Ri dga, sub -b asin RI -11 iia ages ftam an ellclvat:ian
Of Zero a]an�l the shore of thea IRL to 20 to SIO fMet above sea lelval along the Atlantic Caaslal8and
Ridge.
S1lruatural Heaatuncls
A d j aaear.it Flo the IRL soul h of SHI 60, substarnl i al parr i ons oft sub -basin RI -1 weird filled tca construct
res:ideanlial canal subdivisicans. Rleawinitlly, craainiagcl improvemelnts to Old Dlix:iel Ilighlway were
aorrpletead, wh:ila draina�lel improvemcants along US 1 in that anea ane curnclrnilly undarway. Other
recaent stormwatelr improvemelnts in sub -basin R1-1 inalucel drainage upgradcls in River Shores and
Counity Club Plointcl subdivisions, as wclll as the instillalioni of a sllcarma-surge plroteactican systorri in
RloaU i dgc I.
Hlocad Zonies
Withlin sub -bas in Rl-1, f]locad zonie AE extclnds from the wclstarn shorcl of the IRI to approximately
-1_`100 Riet inland, whilcl flood 2cana N axtends inland 300 to ]150(1 feet baycand tliall point. The
reama:inder caflsub-basin RI -1 is outsida aflthle fiffl year flood hazanc zone.
Land Use
Land uses in lha R•• 1 sub -b asin inalude mixcld residential users, caommeraial develcapmianats, and opan
spaael (e.g. undevalopad flatwoods, asluanine weallands;.
Opcarating Br.rtities and llurisdicticanal Rlaspons itility
Within sub -bas in 141-1, aulf�lls area mairrtaineld by lhel City) of Mero E eaacbl, the HDIO'fl, and Indian
RIvar County, whilcl stormwater manaElelmernil ffaihities scarvin�l the Mista Rloyalla Condominium
Dlevclloprn ani ara privately mairnlaainied.
Capacity Analysis
WI He the stormwater manageamienatt faailities in sub -basin RI-] are capable of aaaommodating al ]east
a 1(I yclar/24 hour sal orm avelnt, tha stormwatar faail:il ies associated withl tblca worth extension of Indian
River Boulevard ana dasignied to aacommodallel a 11 0(l ycaan/72 bloun storm avarA.
Communily Develapnenial Eleprlmier 11 Indian River Counilly 21
Corrienisime Plan Slaraiwater Mlanf i!errienil fluit -Dlerr it
Sub -b ass n R -•2 (Gifford/Wab assa AY ea)
Serv:iciei Area
Extending frami thea north baundary of Sub -basin R-1 to CR 31% sub -basin R-2 is located baMv een
the eiast boundary afltha Indian Riveiri Flarms Wlatcr Canlrol Distniat (IRF WILD) anc tha IRL.
`Ilapagrali
Within sub -basin R-2, tha eastearri X2,000 feet of that sub-basir.i its primarily low -lands ciomflriaead of
watlands and t:idall marshlands. Wlhilca thle calevationi is zero ncaan thea shone ofllhe IRL, elavatians
generally ri sea to the wast rcaaching a maximum of 4_I to 50 feet at ava sea levell in isolated areas along
the Atlant:ici Coasta] Ridge.
Struclw al Natures
The wastarni hallf oflsub-basin RI -2 is largely unda`ialoped with na defiinead drair.iage ways ar systamis,
while the eaastarri hlallflis drained to the ]IRL through a series afldriainaga ditahles construictad by the
11DO11 and tha FIECRM.
Mood 21or.ias
Beginning at thea shone of the IRL, f laod zone A E extends inland nearly anca mi le. West of f cilocizanca
A FI, fllocad zone M extends an adc itionial 500 to :100 feat sin] and.
Dand Usa
Within thea eastarn portions cif Isub-basin RI -2, miixod residential, ecmmerc:ial wid :industrial uses ana
dominant. In thle weastearri portion oflthat sub -basin, agriaultural lands and scaatteared reasicl ar.itial uses
area dominant.
Operaling Entiticas and Jlurisdiationial Respansibality
Whila PDO11 owns zmd maiinlains facilities that serve U.S. Highway :I, the ear.itira sub -basin R-2 is
within uninicorporatead Indian Rliver County. As such, Ir.ician Rivar County awns and operatas all
stormwater fficailities within that basin.
CarrimiuiEUN E euelopment Depf rtment Indian River C ourdly 2.,I
Ccimiprehensive Pllar Slormwaler Mar aigement sub -Element
Capacity Ana]Ns:is
CurrenitaN, Iho ani ire sub -basin is capable cif Iacaammodat:ing a 3_I year/34 hour slorm avant.
Wall or Qual:iq
Rlocicrl:idgei subd:ivis:ian avid Country Club Hointea subd;ivis:ian warn aanstrucilad at a time whein
stormwater management fealuras were riot raquired. A s such, they hislorically conitributeic to waiter
pollulion in sub -basin R -J. Rleaanitly, stormwarter improvaments were caompletad in lhase
subdivisions) ailleiviat;ing pollutian problems.
• Sub -basin IR -3 (Roseland Ar eia)
Service Areia
Exilenidinig north of CM 5 ] 0 to 1he shlore of the St. Sebastian Riveir, sub -basin R-31 is located bet"leen
thea IRL and it ha PECRR.
Topographly
Ilypical of thea east slopes of the Atlleir.itia Coastaa Ridge, elevations begin at zero along ilha IRL and
rise to thla c eisil, reaachling W to 3_I feet in haight along lhla r:idgc where a :low flat plateau exists.
Slruatural Aaature s
Although) ei :laaige parl of basin RI -=1 encompasses urbanizad arenas of the City of Sebastian, the
northern plortian is pradaminataly an urian silarmiwaler managament systemi consisting of canals,
ditches, starm se wars and cuavearl s.
Aload Zones
In the niorlhlarn portion of sub -basin RVI, thlc AE fllooc zone is in close proximiq to thea IRL.
Ilandward of the AH fllaad zone, thle x f )acid zone eaxil anids to UIS Highway l in the north), and west of
UIS : to the south).
Land Use
Within the R-31 sub -basin transportalion caorridor (UI8 Highway 1, Old Dixie HiElhway, avid lhla
FIECRRI), aamrnerc:ial and industrial developments ane scatllered. Along the IM, )Mere is a miix of
ClammuinilylDevelaplmerI Eeplarlmenl Irdliam RhierCum t31 33
Comprehensive Play 19tarmwEdur Mfir agement Sub -Element
single-family and multifamily deivelcipmor.ts; hovueiver, thea band of cistuarina vwelllanids parallelling
the sharci of ilho IRIJ remainis largoly undcivoloped.
Oparat:ing Ent:ilies and Jur:isdicitionia] Rlespansibidity
W:ithlin sub -basin R -2I, stormwatar faciil:ilies ane ownad and mairu:incic by Indian River County, thea
city of Sebastian, tha HECRM, and the F1DOT. Saverall privates residential devalopmenits own and
maintain separala stormvwator systems.
Capaaity Analysis
Proximale to U.B. 1 and tHo FIECRRI, thla primiary so armwvallar fac:ilitias ara designed to aacommoc ata
a 2fl yciar/24 Maur storm event. Rleicently, svwales vwera upgradad in Rlosaland amt of the PEC railroad,
anc a detanlion pond was added adjacienit to 1 J5'h Ava.
- Ind ian Rlveir F ar ms VNaitar C ontt al Dish ict Basin
Servi:iae Aiea
Managing stormvaatar runafflfor over Iwo -thirds aflthle county's tubanizod arc ia, IHe Indians Rivar
Farms Water Carilral Dlistriat (11RFWCD: has the largost sermiciei area of any walar control dismal in
the county. Ganarally, tHa 1RFIWCD sandca arcia is located wcist of tha Atlantic Caaso al Ridge and
conisi.ils oftluleci separallci sub-basini.i: tha NortH Re:liiaf C areal (NRC ), sub -basin C-1; thlci Main Rcdicif
Canal (MRC), sub -basins C -2; and iIha South Relief Canal (SRC;, sub -basins C-3.
Topography
Whale the staape.rt slopes vwitHin the IRI]MICID t as:in ara located along Iha west sada of the Atlantia
Coast Ric ga, thle ramiainder afltHe district is ralativoly flat.
Slrucitural Faatures
Complate:ly sHaeilded flrom autsida inflova by a :rystam of levees, ovar J20 mules of sub-lataral and
latciral drainaga canals provida positiva drainaga for ninofflwithlin tha basin. To prevail saltvvatar
intrusion and aor.itrol water levels, water aanilral stnicitures ara localed on tha reliaf canal syyslem.
Raaenitlly, racial gatas warn rep:laccid witH Milting gatas at savaral control slniature locations. 'lilting
gates allow less sac imenit to pass thriouel tha stniatune.
WitHin sub -basin C-1, reiaent upgradas to struclural fdatunes inalude:
CommunityDeveilapmenlnerjarlmet I Indifir lPiverCoumly :I4
C amprellensive Plum Stcarmwiater Mamiagement Sutl-Hlernenial
➢ In thea aast C ifford arcaa, upldatod drainages swal cis anc a raw stcanr. water dol eniti ori ponid
alorag i1ho wesit side afltha BEC ra'lroad.
➢ Stormwatar imprcavamenats in Honderosa Estates, King'si Wes Estatasi, and King's
Muni caianc .
➢ HDOT slormwatcar imprcavamcanls all thea US Highlway 1/42nd Hlacae inatarsocat:ian.
Withlin sub -basin C-2, recant upgrados 1a struictural fiaatunesi incaluda:
➢ A f ltratican systemi caorasolrueatead can lhla Main Heli of Canal to trcaat 200 m:ilIii can €lalIoris cifl
wator per day.
➢ Tho Egrct Marsh pro'cacat, caurrarkly undar acanstruat:ican, aonasisling of an algall turf)
scaruibber thlall wial traat agrilcultuial run-off in tha Hataral "D" Clanal.
➢ 8lormwatar :improviamonts in Hiina Treca MAL
Within sub -basin C-3, recanl upgrades la Aniatural featujas inicluda:
➢ 8acondary drainagca :imiprovemcants yin porticans of Oslo IHadl, C ravanaor Bslatas, Indian
River Haights, Stovan's Hadl, and Vora Beaahl Highlands.
➢ 81 ormwatar improvemanatsi, aurranatly undar caonstrulction, al thle Old Dimie Hli€]hway/5d'
81reel SW iruirseaat:ian.
Oparaticanal Einlitias and auiisdiat:ianal Responsibilitias
IRFWCD: Jlurisd:ication and ma:intanaanca oflprimary drainage outfall canals arca 1he responsibility
of 1ha IRPWCD as aulharized by H.S. Seation 398. The Disitricat has a ragular
maintenanaa program to calean thle caanall systam and operata f. ood caontrol gates.
City: Sacondary drainaga swaleasi, d:ilahles arae caulviarts within tha ait)I (iflVero Beaachl arca the
respansibility of thea city.
Caunty: Saconadary drainage swaleas, ditohas, and caulverts within thea ur. incorporatad county
area the rasponasibility of Indian Rtivear Caunt)I. Tha county funds mairatenanaa and
manor caonstrucation activitieasi thilaugh ad valorem taxes ganaratac withlin the
ur incorporateac area.
Capacity Ana:lys:is
Due to watear qualit)I concarns, the IRFWCD has not substanllially:inareased autfall capacaity to lhla
IRL sinca 1'g30. Tha District's philosophy has baen to mairata:in dhicahlarge an a status -quo basis.
Community Develciplmerd Heplarlmenil Inidlia ri R Ner Caumity 25
Comprehensive Plan 1I1ormwaler Manaigemienil ,;luib-Elemenit
As a iiesult cif extcnsivc cu:lvcrting arid the addition of impeniious surfawes, large sciat:ians ofl
sub:lateralls w:ilhlin 11hc distract arei constriatad - as ir.idicalleid by low flows and hlighl hcadlossas.
Overall, must :locations eiast of the Al lantia Caasll al Sand Rldgc will] riot exporiienaci flooding bacausei
ofltha Dlislrict's aanals; hlowavar, sarna awas bawaein 11ha At:laritia Coastal Sand Ridge and 11le'len
Milla Rldga voila experianae flloodir.igl due to gcnciral low ground conditions.
• Water Quality
As a reisullt aflBcst Maniagernanit F naatices (BMF s) and farmiwatcir miariagcmenrt praat:iaes, sub -basins
wiiI in thla IRFWCDI aor.lributci lass than ninci pcirccmt ofthle tala1 suspar.idad solids ('BSS) entaring thla
IRL.
Sub -Basin C-1 (North Rcli(lf Canal)
• Flood 2lonas
Overall, sub -basin C-11 aonitains thle second largest flood prone arca within) thea IRF WC DI. Within 11lat
sub-basir.i, fllaad e:lcivations ranga from 19 to 2'-I fMet.
Wallari Quality
Within sub-basini C-1, e:lcvated lavals cif nutriarts, turibidiq and sed:irrieirtallion are atllributed to
agricultural runoff, url an runoff) ar.ic saptia tanks.
• Sub -Ho An C-2 (Main Relief Canal)
11 laud Zones
C vciraa 1, sub -basin C -:I aanl ains several flood pronci arcias. Thlc largest ansa :i s boun ded to tha narthl by
lhla Main Relief C areal, to the ciast by 43rd Avenue, and to the west by i 4 t, Avenue.
Ini sub-basir.i C-2, fllooc ellavat:ions range from E to 1 feet.
Water � uality
Wilhin sub -basin C-1, alematad lemells of nulrienrts, 11urb:idity and scidimentation are atlributad to
agr:i aultiu a:l ninoff � uriban runoff, and septi a 11 ank s.
Carrimuoo itj Development Department Indian River C auntM 26
C ompreh en sive PI an 91urtn"iater Mlawigerrier 1 9uih-E lenfen t
Sub --basin C-3 (South Relief Canal)
• Fl:lood cons
Dua to lhei limited dischlarga aapaoity of the raliefl cianals and thle 11aw elevations, sub-Iasin C-:1
contains the latigest ffload prana area aflthle IRFWCD.
Willhin sub -basin CI -31, f. clod alevations range from 19 to 21 float.
• Watan Quality
Wilhin sub -basin C-1, alevallad levels of nutrianls, turbidity and sedimantatian ara attributed to
agriaultural runaff� urban runoff, and saplic tanks.
Fc llsme re Farms W ateir Con 11 r of Districit Basin
Laaated within 11.1a Fellsmiere Farmis Water Cantral Dl:istricit (IFFWCD) and discil:laiiging
approximalaly 88 MGD, the CI -_`I4 Clana:l is llha singly laiigasl surface water disahlatige sourca of any
nallural or antlulopaganic drainage faatura vaithlin thle Claunty.
'I arvi cie Area
Tha FF WCD consists of apprax:imately `10,(1(1(1 aeras located batwaen I -SI -4I and Blue Cyprass Lake.
Expanding from the Breivand County lina to four mules narih of SRI ((I, that district is ten milas long
aasl to west along tha Btievard Claunty Nina and eighlt milas w'da northl la saullh.
Topagraphy
With an average elavat:ion afl2(1 TGVD, thla topographly aflthle FBWICD is re.lativelly flat.
Strucitunal Faatmes
Spacad twa micas apart, fiva northl-south lalara:l canals comprise 111a FBWICID stormwatar
management systurn. Connecling those lateral oarials, =0 aast-wast ditohas me spaciad onie-quartar
mule apart.
Flaad Zones
While much of the distriat :is within tha 1(1(1-yaar floodplain, thle areias batvaaen tha 31(1 aast-wast
ditchles ara outsic ei of the 100 -year floodplain.
C ommumiily Develay frier iI E ellai brier 11 Indian River C our ily 21
C amprch(insive Plan S1 arrriwateir M anfwinient Se E-111utnenil
Land U sea
Within the FFWCD, agriculture and raskantial area thea primiary :land users.
Operating Eni t:icas and Jurisdictianal Rlcasponsibilities
Throughaut the FFWCD, tha county maintains swales along C14 507 and CR 5:12. In addillion, the
county mainllains drainage improvers ants assoaiated withl 'Ilrapicall Village Estates Subdivision.
Whila thle SJRIWMD maintains rasarvoirs 11acaatad in the St. Johnls Watear Maraagemant Arcaa
(SJIWMA), all of tha remiaining drainage facilitiias ara maiintainad by thea FB)MCID.
C lapacit)l A nalysis
The stormwater managament fhail itias caplearatead by the FAVMCID hava a design capac:iq of anew-quartar
inch afIruriaffI in :I4 haurs.
Water Quality
Ganarallly, agriaultw al operall i ons ara responsible for the majority of wal er pal luti on in tble PF WICD.
In fiat, agr]aulture is responsibla for 95 parcent of tha nutrianl poll ulion'iithl:in tole c isllrict.
St. Johns River Watfarshed
➢ Delta 11arms Basin
Serviaa As ea
Bounc ac' by SRI 60 to thle saw h, 12:Ind A vanua to thle east, C IRI 5112 to thle wast, and the Blue Cypress
Waller Managemanl arcaa 11a the northl, the Delta Farinas Basin enaomplasses 2,830 acres.
Structural Flealuras
Hisllarically plarl aflthe St. Johns Marsh, thle Dalta Farms Basin its now separalad by aperimatar dikle.
Thlai basin is drained across tble northl parimetear d:ika to tble Blue Cypress Water ManagemiearA Area
(BCWIMA) by fbw macblaniaal pumps.
Mood 21anas
Thle ent1ra D alta Narmas Basin is lacaatec in a 100 -year floodplain.
Camim[ niit} E eNelopmemt Dupartmunt Indian River C aumi ly 28
Comprehensive Plain Starmwa ter Mamiagement Sub-Elerrient
Land U se
Within 1ha Della Farms E as:in, agriculture :is thea primary ]land wise.
Opcaratin€l Entities and Jluriisd:icationall Rlespans:ibilitiicas
Withl no aounty drainage facilities within the boundaries cafl the districil, that area its undar thea
plcrrn ittir.i€l auithorftt of the SJ RWMD.
Capacaity Analysis
Wt. He the facaiEties ini thlis t asin ara dasignad to reamove 2.75 inchcas of runafflin 34 hours, thea basin's
plumps ara capable of pumping 1`10,0(1(1 gallons pcm minula.
Bluc Cypress Marsh Basins
Servica Ar eaa
Local ad within tha amtremca wastarri part of thea county, thle St. J Chris MaTishl caxtands flrom the St.
Lucia County :line to thea Biievard County Bina.
The following marsh areas are asscaaialed wilthl thle L;ppar St. Johns Rivar Basin in Inidian River
Claunty:
➢ Wait Drum MansH Con seri atian Anea (1H1DM CA' Sub -bask. 1lhe F DMCA is
lacaatod batWean Thea Fllarida Turnpike on Thea south and 9R 60 on thea narih. Thle
FDMCA is 19,670 aares.
➢ Blue Cypress Mamshl Consurmallion Anea (BCMCA) Sub -basin. Located batwaen
SR 60 and F allsmera Griade, thea E CMCIA totals 29,_`100 aeras and inc:ludcas Blue
Cyprass Laka and the surrounding marshl.
➢ Blue Cypruss Waten ManagementArtaa (BCWMA) Sub -basin. East cif E CMCA
and ncarlh of SRI E(1, thea BCWMA has half of its area east of1512.11ha BCWMA its
9,13.1 aeras.
➢ St. JoHns Wallcn Manageiment Aneaa (SJWMA) Sub -basin. Sauth afT allsmiere
G riade and oast of E CM CIA, tha SJ WM A inialuides tha Stick M arshl avid totals 6,H0
aeries.
Cammi r, it31 Demelapment Depa rtmenit 11nidia n River C aunt} 29
Curry preiheursive Plar 91ormwaler Mar a3,cmeanil Suib-Blemont
F: clod Zones
Aaaording i1ci the Flacid Insuranaa Male Maps, all of 1ha marsh) is within 1ha 100-Yaan fllcicidp: airs.
Land Ulsa
Whila 1ha basin was puiichlased by lba 3114WIMU fOr f Iood control and water consarvat:icin pure osis
as plait of 1ha Ulpperi S1. Jlcihris Rivaii Llasir.i Plno joint, a fishing camp and aciunt}j park ara local) ad cin 11la
wast shone of Blues Cypress Llake.
Operalling Entiticis and Jlujisdiiat:icinal Rlesponsilbilitias
Oparation cifltha wiatan m anagemant areas and marsh) aor.iservation areas are the rcisponsibiliq cifltha
SJIRWIMI]. Thcise fac:ilitacis along the Blor:ida Turnpildci and SRI 60 ara maintained by FDO'➢.
Capacity Analysis
T ha Uppers S1. J ahris Rivar Llasi n Biio j eat was designed to nedu ce thci 1 CI(I-yaar f Iced stage to 25.3 fMet
NCVD in the SJIWMA and to N.-) flet NCVID in the BCWMA. Tle prolecrt's flccd pinotact�icin
levecis ara designad to plrovilda flood priotciation fbr the Standard Plroject Blood wihlichl has a rieturn
plariod in amaess ofI200 yciars
St. Johns Water Control Distriat Basin
Scirvice Arcia
Baciatac batwaeni SRI 60 and 1ha St. Lucia County line, and cixtcir.idirig wiasll to 1ha boundary ofllhla
B. uci Cypriess Marsh Basin, and ciasl Ici lhla Range 381 Basi/Rlange 37 line, the St. aohrs Wlatcir Conb1cil
Dlistricll (SJIWCD) totals T,84CI aarcis.
Struatuial Beatuiies
Wilhlin thla SJIWICJJ, north)-sciullh ]lateral aanals spaiced every male connect to an ciasll-vest main
floodway loaaRic alorq Oslo Road. From that main canal, dischlargas ara pumped into lhle Hart Drurr.
Manshl Clonseniat:icin Arcia (BDMCIA) and tho Blue Clypress Wlaten Management Arcia (BCWMA).
Cummuniity E evelapmEmt D(partmeurt Indian Rfveir C ounily =10
ComprehEmsive Plan �lilarmiv`aller Manaigemienill fluit-Dlement
HIciod Zor.icis
The cirtinci SJWCI] is 11ciaatod withlin lblei 100 -yo m zonici.
IJand Usci
Within the SIJ WCD, agriaultuna is tha primary lane usci.
Operalinig Hniliticis and Jurisdiatianal Maspor.is:ibilities
The SJRVXMD blas juvisdialioni and permitling authority oNcir ilha ADMCIA and BCWMA.
Capaaityl Analysis
The maim f. ciodway, in acinjunation withl the niorthl-south) lateral aana:ls and the pumping silaticins, ara
capablla of rcimoNinig f6w inarlas of runoff in 24 blows.
C amirmnillyi Develaprier 11 DepmIlinenill Inclifmi Piv er Couinily =11
Compret erisive Plani Starmwateir Main ageimenit Sub -Ellen ent
Talbot Tennace Basin
• Servicea Ai as
FINilending from thle Brevard Count{ line to thlc C)keocihat eaea CciuntN line, ll:la Talbot Tlarracca Basin is
approximatealy _`I milers w:idea.
• Tlaplograplhy
Beatwaen thle C saaola County linea and thlea westorn edges of thlea St. Johnls Marshl, thea surface ealevations
aflthle Talbot Tearraae Basin area approximataly 40 focitNIGVID. Blue Cypneass Craehl and Aadgetll
Branch) Crook diaain into F ]luca Cypress Lakca.
• Structural Featuaeas
OtIlaia than SRI 60, thle Flarida Tlurnpikea, andprivate ranchleas, no stormwatear managlament facailillies
exist in the basin.
• Flood Acaneas
Localizak low areas spiaead aut thrloughlout thea basin area withlin 1110 100 -year floodplain.
Approximately 23 peraceant of that basin is within the 1CICI-yeaar flloadpllain.
• IJand U sea
W:ill:lin thea Talboll Tearracae Basin, aglricuhlurca :is thea primii ]land uses.
Operaling FIntliticas and Jhuisdicat:ional Rlespons:ibilitias
Whale thle I11131011 is responsiblea fkan maintaining drainage faaihities locaatak along thea Fllork a Turnpildea
and SRI 6CI, and Indian R1vcr County is responsible for miai itainainag k rainaage facilities lacaatak along
Blue Cypnass Ilake Rllaad, thle basin ]lies aampletealy w:ilhina 1ha jujisdicational boundaries cif thlc
SJRWMDI.
Clamp unity) DevEdarin ent E epairlln enl Incliani River Courily =1�I
Camipretl ensive Plana Starmwoter Management Sub-Dlememt
ANALYSIS
N ciarlly a caenturyl ago, acanstruclion caflthe netwcark of drainages caanals and ditchers in the acaurAN began
with thle purposci of driainingl marshlands to allows aultivation of citrus and vogetablo crops. llhcaso
oniginal drainago ncilworiks now comprise the vanicius waters control districts in tho caounq. Tho llulee
oldcist waters control dislricils are the Follsmerci Farms Water Clcantrcal Dlistriial (FF'WUD), thio Indian
1Zlivcir Farms Wator Cor.rtrol District (IRAWCIDI), and tho Sebastian Mivcir lmipravcimieint District
(SRIDI).
W:ilh thci aonistruction of lhci Indian Riven Farmis drainage network, a :I an8ci pail ion cafltho caount� was
addcid to thea Indian Riven IJagoor.i's walarishac' via thrleci majar outfall carials. Maw canals arca the
Main Mal:icaf Canal, tho North Mehicif Canal, anic lha South Mehicif Canal. Previously, thea ]Indian River
11agacan's wiatorshed acinsisted canlly of land ciast of lha Atlantic Coastal Ridge. At thlal timie, areas
betty acan tha Atlantic Clcaastal Ridge and thea llein Millet R'dgca driainad info thea Southl Plnong of the St.
Sebastian Riven, wihila aiicias west of thle Tan M ilea Ridga f lawed into tha hleadwaleris of the St. Iohns
River.
In taunt deicades, urban devell capmiant hlas iieplacead aDlicullture :in portions of Indian River County. As
thio cour.rty bogan to exponieinicea urbanization, fllcacad aontriol beaamci a high priority to protecat
devealopirant from flooding by modifying r.aturall syslams tca conivey starmwjatara runoff away from
urabanizeac ajeas. All thlough cifftictiva, that strategy resultcid yin :impacts to water qual:it�, parliaular:ly ini
the Indian Rivaii IJagocan.
Cvar thle years, f✓:adwal, state, and local stcarmiwaater management regulations have becomo rnara
stringent. Currentlly, stcarmwaleri rnanagamiant f�c:ilit:ias arca requarad to control thla quantity and
quality of stormwiator ruroff I
Within Indiar. Rver County, the various drainage networks have boein sucaessful in prcavic ingl food
praotecrtior.i. During a recant 100-yom storm evant (`➢rap:icaal Storm Fay;, na major fllocadingl ocaurrad
within the aount�. As a resu:ll oflthat storm, only loaalized stneat fllacadingl was oxporianced in soma
portions of thio county.
Whila thara has baeni some success in addressing the detrimicintal aspects of stormwiatcir runoff intca
the lagoon, additicanal eff ni s are needed to impriove water qua]ity th>ioughcaul tho IRL. lla :imiprovea
water quatiq in thla lagoon, tha quanatiq cafI stormwattor rieaaabling the lagacin must be reduced in
conaiunctican with tha improving tole quality of that wiatear.
Communiit}j 11eivelapmemit Deiplartmemt Inidi am River C aunty 3=l
Cumprehensive I lair Sturmwaiter Management Sub-Elememl
Water Quality
Batwccar.i :I 9cl( and 2008, Ind:iari River Llagoon water qual:ityl remained fairly oonstanl. Within ilhc
]lagoon, water quaLily is mciasurcid at various points. At coach point, watch quality geneiratly f lucatuales
within establishes rangers. FJecacanfly, walcir qualit)l al several waler monitoring slat:ians showed
impravcament. That improvement may be the result of scavcra] recaenit watar qual:ityl projecls,
including: muck dredging in ihea St. "lIcitasilian Rlvar, the creation of stormwater marshlcs to purif)j
pollluted wataii, and imipravcad scadimeivat:ion and carosion control pracatiocas.
While ilhc majority of thea lagoon's wateni within Indian Rlvar County{ ma:inlainis the Florida
Deplarlment ofl Environmental Plrotecation (DEB) designation of "Outstanding Florida )Maters",
Lagoons water qual:iq :is lower in lhlea oeantrall and southern parlions oflthca county. Aacording to thea
20(181✓ HP Surfficae Wal ani Quallity standards raparl, Lagoon waters within thea county arca c asignated by
the State as "Class IIP' from appiioximatelly Grand Harbor south to an east/wast lline inatersucat:ing tho
narlhlernmost tip aflRlound Island, and all ang lhle wcaslern side of thea Irltraaaastal Waterwayl (l CW) from
the Wabasso Causeway north ilo ilha narth caounty linca. "Class II" waters eaxlend fromthe north) county]
line south to thea Wabasso caauseway coast of the ICW, from the )Nlabasso oauseway south to the northern
limit oil the Grand Harbor development, and from an caast/west )line iratersecating lhle northern tip ofl
Round Island south to the soulhl oounty line.
Improviing thf Quality of Stormwiater Flowing into thl( Lagoon
Arr.cang the caarliasl devcalopmients in the county was lhla caonstrucation ofla mass:ivca drainage systema
with three outfalls to the Indian Rilvcr Llagoon. Thosca outfalls ara the Main FJe:lief Cana], North
Mcdicaf Canal, and the Sou1h1 Rlcaliefl Canal. Throughloul the southaasilarni pariion afl Indian Rlvcar
Countyj, stormwatar runoff) is ilransportad to lhca ]lagocan via this drainaga system.
To improve tho qualit)l ofl stormwater flowing irrla the lagoon, the caountyj, in 2007, oommenccad
construicat:ion on the Marin Ral:icafl Cana] Arojact, a filtration system Lsting scaries scareening
melhlado:logy to treat 200 million gallons aflwater par day. Conslrucation afla secaand waler quality
pro j eut known as the Egret Marsh is schledulcad fbri completion in 2(110.31ha Egiiet Marsh) projecat will
treat 10 milli an gall ans ofIwater par day ina tho Lateral 11 canal bafkira it reacahes the lagoon.
Cuing forward, thea county should caons:idcr constructian oflpol]uilion controll facailiilies :in the North
and South Aeliicif caanalls, using scaries screcaraing methodoll agM s:imi:lwi to the Marin Rlcalicaflcaanal proje(at.
To fund thosa pro jecatts, lhla caaunty should oontinuca irts pollay of scacklinag funds through) Secation 319
Crants, Snoak Tag funds, Slurf doe Wlater Improvament Maraagemennl (SW M) praElrama grants, and
thriough support oft state and faderall funding far implcmenatalion of thea Indian Rlvar Laglaan
Comprehlensiiva Managemarat Phan.
C aimmun it) E eveluElment Depaarta ent In ds an Riven C aunt) A
CarriprehensNc PIari Starmwaicr Mariaigeimerit Sub -F] emeint
Reiclassificiation of Sui facaei Wlatei s
In 2QCISI,1hle Hllcarida Dcipartmeirnl oflEnv:ircanmontal Arotecition (DEP) bagan a comprehonsivo reviow
of the sllato's surface water classifiiciatiicin system. Adoptcid morci Than N ycaars agca, that system
caassif cis surf�icie water bodies acccardingl Ica a smile of five designated uses. Those dos:ignatod uses, or
c:laasses, ane as follows:
CLASS II Bal able Watar Supplies
CLASS 11 Shollfashl Aropagation or Harvesting
CLASS IlI Meorciation, Hrcapagatican and Mainianance of a Haalthy, Wall -Bal anccid
Hopulation cif lHish and WiIdlif0
CLASS IV Agricultural Water Suppl:ias
CLASS V I�avigatian, Utility and Industrial Usci
A s a result cif lthat roview, thea DEH proposcid a naw surface water cilass:ificiation system. 'Mlat system
is bascid on racam advances in soiencea and tcichnlology, with an emphasis on protcacit:ing public haalth
and aquatio l:ifi:a. Amccardingl to that systcam, surf acie waler I od:icis are classificid amccarding to 11 new
surface watar categories.
Sincie the new surfama avatar classification system is still undar revicaw, thle ccaunq shoulc micanitor thea
proglrcass of public meellings and nilerr.aking procecacingls rcagarding those changas. Iflnaw surfama
water classifical ions are adoptc id, lha county should fallow suit and adapt those caassifrcations inio
its LIDRIs.
R(iduicin g thea Quantity cafl Stormwaateir Flowir g in 11 ca thea Lagoon
In iha past, excassive discharges oflfrashwator into iho Indian Rlvar Llagoon had an advarso impact
on 1ha Lagoon's salin:iq. Thrloughl c ivarsion of (scam a runaffl:inta watar bodias or wollands Haat allow
slcarrrwatear filtrat:ican into the surfrcial aquif6r, iho amacauni of stormwatar runofflthat flaws :into the
Indian Rlvar Lagoon can bca redwicad. To raduce the volume of stormwatar flawing in to the lagoon,
the Cit)j cif Sebastian. in ccaard:ination with tho SM)MMDI, rocentlly developed lhlo Sabastian
Stcarrr avatar Park. Covering :I 6E acres, thal park li ihiaes pumps i1 ca divertwater from the Collier Canal
into the park's sysi am of intermonniected ponds and wetlands. In addition to rcamoving polaul ants from
sllcarrrwatear runoffs thlosa pcands and wetlands also racharge Thea grourcwator aquiftar. Stormwater
parkls such as Haat not cantly, irrprovca watcar quality, but also provic a passive reorcaation oppariuniities
for locial residents.
In tha uninccarporalad partions of the county, similar parks ccauld ba conslrcictac at locaticans adjaccant
to canaas. Aotential sites include the Oslo transfOr station adjamant to the South RkiliciflCaraal and:land
along lhca north) sada of 1ha North) RalieflCanal in the vicinity oflBent Hinci. Al both locations, watar
Community Develapmeril Dejlarlmeril Iridiari River Cauirity 33
Compre6enisiWe Plan Stairniwiater Mamfigenient Suit-Iffiemenil
that is diivarted flrorn the canal could be lreiatod prior to fltralion into tha sumfic:ial aquifdn. Going
fkirwiand, the county should inivantory polleintial sitas for futurie sllcrmiwalen parks.
County Stormmiatfir Division
Croatad in ](10 -fl, tha aciunt)J's Starrriwail eiri Division assists ecunt)l staffs acnvlractons, and lhlei plub.lia
with education and training rolaIcid Ici pion -paint soumce palluticin. In addition, 1Ihat division :is
nesponsibla fon ensuring that davalopmenrt prajeclls ane in cornpllianca with ilhci f6dorally mandaled
National Hcllutant Disahlarge Elimination Syslem (NHDHS) stcrmivwallan pcirmit cn:ileriia. Dovaloped
by tha U.S. Flnvircmr.ieintall Arclection A gancy IJHPA), the NHDES stormwiator permitting program
negulallas paint souwae disahangas of stormweiten ir.rto surface wateris of tha state from construcrtioni
aclliviticis.
Ccnlributing ila improved asluanine waler quality through) publ:ia education and riegulatory
enfmcemanl, thla Stormwiater Division scirvas an :imipori arit hole. As suah, the ecunty should aorkinua
to fund lhase pcis:illions.
Community Rating System
Currantly, Indian Rlvcm County parr ic:ipates in the Cammur. ity Rating System (CBIS) of tHa Nalionall
Hlacid_Inisunanaa Riotealion (NF]IP) prognami. By undertaking floodplain manaipleimeml activities
beyond 1ha rninimum nequinamiants of the NFIIH, the County has achieved a CIRIS dasignation ofl6, a
riating wihlichl results in a 30% discount on all f. acid insunance priemiiums in the uninciarparatad county.
By parliaipat:ing in the NFIP CRS, tho County is conserving fl ood storiaga eapacit� and dhlan naturae
funations and values oflthe 1CI(I year floocplain. Fan that masor.i, lhlei County's pohay should be la
conrt:inua CRS aativiities aria maintain its CRS designiaticin.
FEMA Map Modcrnization
Hnasenilly, the Fadaral Flmengenay Managemicirit Agency (AIFIMA) :is underiakinig a Mood Insurance
Hato Map (FIIRM) modernization project in tHa aciunt}j. That modern:iaat:ion pnojeet anita�ils
assassmenrt oflcunent availab] ci f cod slludicis and uses of up-ta-dale high riesolut:ion aeniails ila rievise
the County's FIRMS 10 bei move accurate and useable :in dapicting flooc zonies. Ultimately, lhlcse
updated EI RM s wail] aid in lessaniing the risk of davelopmorrl ir.i fl acid prionie areias by miore aacurataly
depicllirig and diff irciritialing c ifferient f. ood risk anaas. C ting fbrwiand, Ill. la county should continue to
pncvicei in-kind scmvices to FNMA in support oflthle miap modarniaaticin process.
Cammunit] Eeiielapmenit Department Indican River Ccunty 36
Cuiriprehensive PI ani c Iormwfiller Mar agemer 1 c ub-E leiment
Wlaller Qualiity Level of Servkie (IICS) Standard
Since :I 9SIN, the HIRWIMDI has establlisheac FLRC s foci 1ha Indian Rivera Lagoon. In 2009, the county
modif ac' thea stormwater managleiment regulations :in LDH Chaptear 9�-I0 to incaorpanate c IRWIMDI's
FILIRGs. As a result ofIilhase LIDIR amendments, alll naw car readeveloped stormwatcai manageiment
siNstcams arca neaquireid to acamiply w -11h ilho watch quality LOS standards eislablished by the SIRWMDl.
Curnianitly, the Flarida Doparlment of Envirionmearrlal Fralaction (DIEF;, in caor.junat:icarn with the
Environmental F rail eicti on A genaN (BPA), is devel api ngI a Total Maximum Daily L Icaad (jTMDIL)
standard Win the Indian River Lagaon. According to the EFA, a TMIDLI is a callaulation of the
maximum amount of a palllutant that a waterbody care receaive and still safeIN meed wateri quallity
standards. OnacAMDLs fbri the Indian R'vear Hagoon ara aslablished by the DEP, thea caounq should
incorploratea those 'flMDILs inta its wailar quallity LOS stanc ands.
Ston m water Mast(ir F 1 anning
In order to mcarea effeatively manage starmwateir, the caounq neeads to devolop a starmiwalleir miaslen
plan. To devolop that plan, the acaunty r.iaeds to analyzea each sllcarmiwaleir basin and c aaumenit lhei
location and conidit:ian oflall] stormwaatear faailities.
Onaa aamipl at a, thea comprohonsivea irnvenil Cary of facifl ities, coniditi cans, and basins acaull d be used to
idery ify oxisalinig aapaaity and infrastructurci shortfall Is, to assessa wahere future stormwater caplaaciq is
needod, and 1 o fbrm thea basis for easel ablishinig a 2(1-yeiar drairnag a improvemanat program. By having a
Aormwater master plan, the county will be mora succaessful in scicuring dediaaileid funding scaurcaes foci
stormwater improvement projoats. Pori thlosca reasons, thea caourty sahcauld pursue funding sourceas, suah
as FE A Seation 919 grants and Sunfaca Watear lmiprcaveamenat Mlaraagemeanl (S WIMI) func s, to frnializo
deve:lapmanl of a stormwater master plan.
Storrnwater Management Hun ding
Curreir.atly, storm,,Aaater managemcnt is func ad from Mun:iaipal 9carvice'taping Unit (MISTU) reveanua.
To effealively imiplament a stormwaleri managemcint program, the acaunt)I shlou:ld easilabl:ishl a souncea cafI
fur. c ir.ig dedicaateac eaxaiusivelly to slormwator rnanageament, instead caf rcdy:ing upon MISTU neveanuea. In
that waay, genearal reavaniuei aould ba rciplaccic wiitli dedicated funding sources, irnalucir.igl: bands,
impacat flicis far new devellcapmicir.ats, arc a stcarnimatcari utility.
Community Devel apmenit Department Indian RiN cr Cauint} 37
Camiprehensive Mani Starmwailer Mania3,emenit Sub -Element
GOAL, OBJECTIVES, AND POLICIES
GOAL
Indian River Counity shall provide and maintain a dra:i na ge systeim which riedumis th a risk) of prapcirty
damqa aric :incanvaniiance from long tarm flaading, promalas stormwzteri rachlarga of the shallow
aqu:ifdr, raduaes stormwattir pol:lWant loading of 1ha Indian Mar Llagoor.i and reeaiving walars and
piiovides proper flaadpllain mariegemant.
OBJECTIVE l Fl clad Brotectficm
By 21030, all uxistfing and new devcdopment in the unincorporated secilian of Indian 11iNeir
C ounty will He protected from f loodin g from a 25 yeari124 Hour storm event.
Poliej Tlha county hlcmaby adopts the killowang levell-c6servica standard for all new
drainzga systems wilhin tha unincarporaled counq: Naw davelopmanl raquiiring mai'or sila
plan approval or sub diivisian platting shlala canstruct a drainage system capable of mitigating
tha impacts afl a 25 year/:14 hour dasa8n raiinfall event using lhla Nalural Rasaurca
Coniscirwtion Sarvica (MRCS; Type 2 miadified rainfalll curuas. Post devellapmiar.it runoff
she 11 not exeaad pra-davalopmanl runoff unless a m a ximum disahlarge rata he s baeni adoptad
for thle applicable drainaga basin and the discharge does nat axceed thlal rate. If a maximum
discharge rata has not bean adapl ad for thle applicable basin, posl dave:lapmiant dischlarda may
not axceed pra-davelopmanl dischlarga.
Balicy 1.2: Tha fiinishled floor e:lavat:ion of any naw bui:Iding (ionstruictac within a SFHIA), es
designiatad ori tha most currant Blood Inswanca Rata M zips (IFIR.M s) cif lthe National Hload
In.iuranca Brograrn (NBIP), shall be sub. 'ect la the following requixaments:
➢ "AE" zone - structures must be e:laveted a minimum oflsix (1E; iinahas above tha base
f lood level;
➢ "A" zone - stiuctures ni ust be elavated a minimum of 1 f1 inches abava tha crawn of
tha road or al the alevationi requ:ireic by tha 11HIRS, whichever is higher; if no base
flood data ara aveUab] e, Ihla slructure must ba elavated at leasl dulea (=1; fiat at ova the
blighlest r.iatwa:l elavatiian or the glraund surf6ae prior to aonstruict:ian next to the
propased walls of tha struictura;
➢ "VE" zor.ia - slructures must ba alevalad so That the batlom aflthle lowasl horizontal
slructura'I membar of tha lowest f lacm is elevat®d one-ha:lfl (1/2) fbot ar more above
the ba sa flood l avel.
C ammuinil yj Develaptnenil D ellairlmiemi Ir. dliani R Iver Cauintj 381
Carnprehunsivu Plar Starmwalur Mariagemcmit Sub -Element
Pohiay 1.3: The county shah cansure thal adequatca stormwatcir miaraagemcanl foic:ilit:icis area
eaor.istrucated oink maiintaincad to prcavear.at major f Iciadian€l of thea road nielwork aflIr.ik ian R'vear
C aunty during storm avents.
Poaiiay 1.4: A 11 riew storm sawars discharging iinlci any caanall ar reaaivin€1 waler body shaala ba
dasignad to convey the plcarmittead d1schargca aflar ilaiawatear cand:ilions are caonsk eared.
Pollicy 1.5: A 11 miajor bridges shall be dcasi€lncad to wiithsland a 1100 ycaan/3 day storm caveat.
Pollicy 1.6: Pr:iar to the issuano a afla Land L eavelopmcanil Perm:il, the county shall raquire all
culvearl s within gal I A.S. Secation 2S1€1 L rainagca Districils' rights-c&way or caaseamenits ba sizad
and approved by thea approprial e dii stri ct.
Palicy 1.7: Within ala new subd:ivislans, wide backllal aar.ic front yard dra:ina8a easemcanls, as
well as side lot swales ilea piiovide fkir localizcad runoff nout:ing, wailll be required whenca
ccanlnal:iaed ncalent:ion/datentican facilities area not prov:idcad.
P calices. Thea caounty shall] raquire all] naw stormwaatear management faai:lit:ias ilhat outftall ilci
a P.S. c vacation AH Drainagca Elistriol caanaa be camipletcad prior to the issuanaa cifla ourtificaatca
of caomipletican.
OBJECTIME 2 Stormvwateir Managemfint Plaaclilitiesi
By, x(1210, all drainage Hasin s in Indian River County stall, at a minimum, meet the Flood
Prateation Level of Searviclea (FPLC S) fkar a 10 y ear/214 hlou in star m eveant.
Policay :I.1: In caxistin€1 deavcalopments, thea caounty shall] raconslrucat existing dra:ina€Ie systams
and rcastarca casi8n caapaoity whan iioad paving :is priogrammcad under 111a county's Patition
Paving Plrogiiam.
Pol:iay 1.2: By 2(110, all caxisiling rcaadways in thlca caounty shall be improved to mcaat thlca
fkallowing level -af4serviaa standard:
1. Minimum razac carawn elevation kir caxistin€1 roads sHall ba raisad curing
iie,,aurfdeainag/rebu:ildirig to ilha flocad calevatiican nesult:in€1 from the 2 yearA4 Hour starmi
event on local streats.
2. Thle ceanilar two lanas of rebuihl roads shall be at or above flood levels ncasullting from a
ICI year/24 Hour storm avant on A.rtcarial and Colaeator raac s.
CammuinilyDevelapmendlDelarlmendl Indian Rimer Courily =151
C ampreh unsive Plan Sllormmiller Managemenil Sub -Element
Folksy 13: Ely X112, all dnainaga basins w:ilhin the ciounq shall mieiet a 110 year /24 hour
storm eivient level-af�serv:icie standard.
Policiy a.4: The county shall naquira all neva develapmarit sates to bei dasignad with ncilentian
systems capable afI acicommiadating 1.af1 timers thea imparv:iaus surftacie araa, or 0._`I inahes
1 imes 1 ha pnoj acct area.
PolJoy 2._`I: Ely 2012, the ciounty will adapt a Stormwatar Master Plan. In davaloping tho
Starmwatar M astaii Alan, tha county wall anaalyza eacih basin in the unincorporated county,
identify axisling conditions and prab:lams in eaciLl basin, and idenat:ify prajactac grcawth in
each basin. As a result aflthat analysis, tho county will ideritify a design storm parameter,
disciharge nates, land use allawancia, and strucitural :imipnavcamiant plan fear eacih tas:in. Tha
county veil] coordinate with tho Clity ofl Sebastian, anc will priaritize analysis aflthe aaaaas
within and adjacienit to tha St. Sebaslian Riviera basin.
Aollicy 3.6: 'flu ensures stormwater managament fkillitieas f ration properly, the ciounty will
establish cefined leveals of maintananeie far publics and privata stormwater management
faciilitieas, and will conduct inspocitions on a nout:inca basis.
Ilalicy 2.7: The ciaunty willl, thilough pits lane dovulopment regulations, require ex:istiing uses
undargoing rudevalopmenit to menet dle micast ounieanat devalopment vaquiremer.its for
stormwater mianagemieanit.
lllolicy 1fl 'Ahea ciounq wall conit:inuea:its acitiv:ilies to retrofitthca Veno Lakcas Estates dnaainiagca
systam.
Ploligy 2.9: By 20112, lha cicaunt)l will conduct a ciompnehar.is:iva inveantary of all stormwater
mianagemunt facilities in all of the dra:inaga sub -basins under the county's jur:isdicilioni.
Policy 2.10: Ely 2012, the counity shall establish a Gu agraph:ici Ir.iftarmiatian System 11G.l.S.) -
t awed inviantory cif all stormwaten mianagemiear.it f4ail:ities under the ciounty's jurisdictions.
Q HJEICT]IVE ?I Capital Impromements
By 2012, Indian Riven County will have ani ad eapted Stormwiater Masten Plani, which wil 1 gu i do
all imI ncavemenits to stormwiater management facailities in Ind join Rimer County omer a 2a1 Y1c vin
time 11rume.
Community Deve cipmenil Der artmenil Indifin IPiver Coun ty 4C
C cimprelieni9ive Plaine Stcirmwiateir Mamiagement Sut •Elea enil
Follicy -' .1: Stormwater Managciment Faoil:iq Improvemcinls shlaall be :inciluded wiithl:in lhla
Indian Rivcir Counq Infrastruicilura CIF. A 20 Year lIrrpravament Program fOr silcrrmrwaler
management faciil:ilies wall bei includod as parr afllhle Indian River County Stormwiatcir Masilar
F 1 an, oncie adopted.
Fallicy 2.2 In all major transpariat:icrn improvemcrnl projecrls, tho county shall :incilude
stormwater managumient fac:ilitkis to sorva lhler disohan�lcr nucrds of duvolopments oxisling at
thlu t:imicr of the improvemonl projocrt w:ilhin 1Iha upstream wraturshled area. Funding shall ba
incrluc cid :in the 3lransparl ation CHIP.
F olioy :L3: F raplosed capiital :irrprcrvcrment projects shlala be ovaluatod and rankcrd acicording
to the frillowin€1 priorit51 loved gwic eil:inas:
➢ Llevell One- wherthler the pro.locit is needed to protect pubEci hcralilh and saferty, to fulfill]
the ciounq's logal ciammitmiant to provides dra:ina€lei ffcrihities and sendocis, or to
prasurva or acihiuvo full user of erxisling face sties.
➢ Levell 'Ilwo - wherther thea prajact increases effwiiancy of user crfI oxisiling facflitkis,
preivants or reducias future iimproveiment costs, provides servricia to c crvaloped areas
lacking full sarviicre or promotes in• fill dave.lopmanl.
➢ Level 11hrue - whethcir lha prajact roprosenils a logical extunsionr of Ifhcri.litius wnithlinr a
dasi glnated c rainaga basin.
Polio.�3.4: By 2(112, the county shlala oansidur ostablishinrg a slarmwaler utillity to fund
maintanancre ane improvemicrnts of oxisting stormwatur managurricrnrt flrcillitios.
CEJECTIVE 4 lntcrrgavurnimicrntal Coordination
By12(111, Indian Rlivcrr Ceiunit)1 will have eslablrisherd formal crooperativu rFrllationsHips wiitH
the inicorpanail cid muniaipalities and F.S. 298 SF aerial Drainiagcr Districrls Having jurisdiction in
Indian River County.
Follicy 4.1: Count}{ staff will] atlend micretiin€Is cif Ifaderall; stale, regionrall, and local agancries
whicrhl have starmwatar jurisdiotionr writMn the county.
F alicy 4.2: By 2010, the county, in oaaparation wiilh the SJIRVWIML , shall request a formal
meatinrg wiilh raprosenilativos from a1:1 of thle F.S. 298 Special Drainage D istricrts in the aauntN
to discuss lhla following issues: oanducrllinrg oamiprahcinsiva basin invenlories, adopting
Community Deniedapmaut Uerlartmaut Inidlia n Mi -vier Count] 4]
ComipreNeni! ivei Plani Starmwater Management SO-Eleirieml
maximums d:ischargei limidat:icins, and settling level -cif4serv:icie s 1landands for waiter quality and
flood proteacation.
Policy 4.j: Tlhei county will cacanlinue to :include repriesenatatives from F.H. NO Dlra:inagei
r1s1ricts on its To ahrlical Revieaw Ccammitllee.
F calices Thea cacaunt)j will cacacardinate with appliciable local gcavemuneinats aric A.S. 298
IJrainage Dlislri os to pravicea nalification to appiiopriatci cintitieas of davelopmenl having
potential impacats on anothear jur:isdicalion.
F aH U 4.1- ' lha caounty shall coordinall a with tho SJ RWMDI, ani cincow ago the muni caipaliti es
within the caounty to adopt stormwateir masileir plaris.
OBJECTIVE 5 Preiscrmaition of Flood Plains and Flood ways
The county shall maintain its Ccim prf ihlen simei EmieirgeneN Managemcnt Plan (CEMP) to serve
as a compneheansivie floodplain manageimicnt plan approv(id by the Federal Dmemgen"
Managfamicut Agencyl (IADMA).
F olic.yy I.1: Within regu:l a tory floodways dcis ignateac can i ha most currerr� Raad Inswancaa Bata
Maps (FIRMs), the cacaunt)l shall prohibit encarcaachmeris, including fill, new constn;icat:ian,
substantial :impravomienats, and catheari c eavalopmenll that would iiesult in any ir.icarease in flood
lavels during thea occurroncaa of a f food discahanga, unless specaifrcally appraveac by thea
Administrallcar of the Fciceiral Insuraricae Adminislrat:ion unceari 1ha provisions of 44 CAR
6-112, as amended.
Fol:ica. <� Ccanllingent upon available func ing in 1ha eaounty's eanviranmear.atall lands prcagrarn,
1ha cacaunq shall caontinue to acaquire propearty in the 1(1(1-ycian flaodplaini for caonservalion.
Policay _`1.3: Aoii any struiclurcis oii fill placaed w:ilhin lhei 1(1(1 yeav flcaadplaini, an equal volumei
of (storage capacit)l miust be croated foci any volume of the basei fllooc i hat would be displacaeid
b y fill or structureas, eaxcaept fora the following insl antes as mcarei spocaificaa:lly descriib ad in LUR
Chapllar 930:
➢ developmcinl projeaeats w:illhin Thea flloocplain along the Indian River Lagcacin grantcic a
waiver by the county upcan showing thea deavolopment will not crcaate maternal advearsea
impacat on fllocad prated iori;
➢ subd:ivideac lots lass Than one (1, acorea in size axisling prior to July 1, 1990;
➢ deve:lapmeanl prajacts located in thea St. Johnls Marsh, whear.i granted a taut and fill
waivers by the caounty basead on lacakl of miaterial advearso impacat; or
Clommunily Mvelapmear.il Dellarlmear.il Incliar.i River Clou nily Z 2
Curnprehensive PI fir Starmwaiter WE agement Sub-Ilemeint
➢ devellcaplmieanit withlin thle V Biro Lalde Hstates Municipal Scarviccis Taxingl Unil (IMSTL )
for Aillicli a aul and fill wiaiver has becirn glranted by thea county.
Pol:icay 5.4: The county wii.11 preserve 1lho natural functions and vialues of wetlands by
implemianiting the palicieas listed unc cir Objeclivie 1-I of thea Coniscirvatian Hlemianit.
OBJECTIVE 6 Recharge of the Sunficial Aquifer
Consisllent with Objective 2 ollthe Natural G roundwatcr Aquifers Rechan8e Sub-elcamenll, tHeirci
will be in c r(iducition in the availability of gnoundwaten f1rom thci surficial aquifer through 2030.
Poligy 6.1: Thci cacaunt)l will continue to requ:irci can-sile relention/detanat:icangin aeoardance with
'IJIRNMMDI ark BDIBP performariae standards, as autl:incid in thea Stormwaler Manageamient and
F:Icad Proteacation ordinance.
Po.lieay 6.2: `➢hei ccaunty will conat:inuea to require recuse of stormwatcir nincaftlfor irriglation cafI
galf courses avid othear deavalopments w:ilhl wet deteir.ation/realent:icarn ponds with) a sunfaca area
greiator than or.iei acre.
Policy (.3: By x(112, the caunq shla:11 eaxplora the feasibillity of deivieiloping slormwater paAls
in iIho unincorporateid county to reicharge thle sunf(aia:l aquifer.
O BJECTI`1D 7 Storramiaten Quality
Consistent witH RICA Tele 93I-5.011(2)Ilci)(5), thea ceaunity shall m ai ntain Water Q uality Level all
Sermice (VN Q LO S) based oni F allutaint Load Reduction G Gals (PLRG s) established by llhe
SJRWMDI fbr th a Inidian Rivcin Lagoon arid, whom aavailable, based cine Total Maximum Daily
Load (TMDL) standards establish ed for the Ilagoon .
Ao:licy 7.1: Thci county shall ccacaporatci with the IRLNEF, SPAWIVIDI, BURP, DHIAS, Marine
Aciscaurccis Council IIM14C), and othcir organiaatians in ccrnduciling an inventory pollutant
loadings tc the Ir.ic ian Rlvear Laaglacarn (GIRL).
Ao:lick Thci county will roducae thle loading of suspended salids within starmiwa ter runoff
by pavingl unpaved aourty roads w:ilhlin deavealopad areas whlere thea road,' drainage systemis
discahlange into thea IRL.
F ollicy 7.=1: Thea caaunty will aor.itinue to requirci applicants for land cleaaning permits to submit
erosion control planta.
Holicy 7.4: Thle County will cont:inuci la operate a street sweieping proglrama for caaunt)l rcaads.
Community DevelapmEmit DcpartmEmt IInd iam River Caunt3l 4:1
C omiprehenisi vie Plan Starmwg 1 er Mania gemen t Sub -Element
Polio Indian River Claunt)l will] continue to requirea sodding ar grassing) aflsteep slopes
construaled in canjunalion with alll Transportalion Improvemsant Projects.
Poligy 7.6: In aacorc ante with Program Goall I ofltha Indian River Lagoon Clamprohans:iva
Clanservaation and Managemlant Alan and Goall I of the Swfbice Water Improvemcinil
Manag ament (SWIM; Alan, lha counity shall rcac ucie thea amounit of non -point sowcea plcallutison
entcringl the Indian River Lagoon by applying fbr SWIM funds ant 9ciat:ican 319 Granils to
improve ilha pollutant rcrosaval of eafficianay of cxistingl slormwaler maraagemeanl faeilillies
and, wherea feas:ibllci, to cacanstruet now reigional silormiwaler mlanagerno l faciilidies.
Aallicy 7.7: T a counity shall eliminate all point sowces of pcallut:ican from private seawar
plants and scaplic tanks contr:ibuiling to walear qualit)l prablams and nutrieanl anrichment ofthea
Indian River Laglacan and thea Upper 91. Jahr>Is Rilvar Basin (as indicated in 11 le Sanitaryl Scawcr
Sub-Elament policies) by:
➢ Canitinuing ila expaina saniilauy sewer service wiiilhin the L nban Seniice Aiea;
➢ Requiring] annual eualualian of private sewer p.larit9;
➢ Requiring] manillaring of sepilic tanks;
Reusing irrigalian quality wastewaler far sploy in iglal ian;
Requiring new deve.loplmeM to canned to a regianaa wastewater Ueatmenl facAity; ant
Clthen plollic:ies contained the Haniilary Sewer Sub -Element.
Policy 7.8: In compl:iancae withl ilha Indian R:ivear IJlaglacan Acct afI :199(1, thea county shlall]
cacanllinua to prahibit the dischlargc (iflefEucant frcami dameastic wastewatar treatment planls into
tl o Indian River Lagoon.
Pol:igy 7.9: '111.1a ecaunt)j, in ecaapearatian withl the Indian River Soill and Watear Conservation
District (IIRSWCI3;, shall roqu:irci all naw groves and replanilcid graveas to implement
eonscirvlalion pians, and non-strualural beast mlanagern and pracatiecas (BMAs). T can-struletural
BMA s, as deafir.aad by the Natural Rescaurcae Clanservaatiscan Sarvaicc (N RCS), inclludea :lane urea
planning, preascarvation aflweatlands and floodpla:ins, educailion, ant erosion eantrall.
Po:licy7.10: Lnil ill. 'lcalal Maximum Baily Load (TMIXI) standards are caslabl:ishled fOr tl a
Indian R1vcr Lagacan bbl thea I313P, the caunity will caontinue to requirea, as a minimums,
reteanilion afl thlc first one (1) inch of rainflrall prior to offi•sile discs ange. Consisleant with
Chapter 1-�I`I.Cla�l(9), FI.A.C., anaddiliona150 pcarcent ilraatmcant (11.5 inchles) is reaquired for
all direct discharge :inllca the Indian River Lagoon due llca its designatican as an Outstanding
Alorida Water (CII)M).
Ilcalicy 7.11: All existing uses shalll meel the adcaplcad WCLC S at timsca of readeavalopment,
:including TMDIL silanc ards cancae casilablished by the DEP.
Carr muir it] f evelopment Department India in Rivier Caunt31 44
Comprehensive Plan Sltormwaller Maniagemenit Slub-Dlement
Ploliay 1. ] 2: Tlhlei county shall requ:irci liti oral zonae vogatationi plaritings for all now arlificia[ly
ciraatad ponids on project sitas excaading tan (10) aares :in area.
Plol:iay 7.113: Thle county shall punsua grant func irig to asllabhisH stormwiatar filt>lation systams
cn thle Nortfl and Sault] Main RUiclflCanaas.
OBJECDI`lE 8 Land Use
Through 20210, all land uses and land use densities witHin Indian Riven County will be in
compliancfi with the Futuro Land Usti I Ian map.
Bloaicy 8.1: 11ha county will allow only low dansit)l land uses in areas das:ignaled as fllocd
prona (within lhla 100 yeiar flloocplain) as depialed an the Buture Land Usei Map. 'Bhei only
excciplllion is where platlleid subcivisions wcirei devalopad prior to ax:isting regulations.
Blcllicy 8.2: The county will assess the draina€la capab:illity of all lane s proposed for a change
in land usa designation and not approve land usa aharngas where draina€la servica levals will
not ba melt.
11alicyS.3: Tlha count){ shawl flromota infill deve:laflmant by imipraving and mainlain:ing tho
existing crainage facilitias in the davaloped areas of 1ha ciount)j.
PLAN IMI LEMENTA TION
An imiplortanl part oflanN fllan is :its imiplemenlatian. Implcimerrtzition invollvas eixecution ofthle p'lan's
poliaies by laking actions and achicivin€l results.
Aar tha Stormwaler Managament Sub-Eleiment, implemeiritation involvos various acitivities. WY ile
samia of those actions will ba ongaing, others arei a(ilivitias that will be taken by certain points :in
timia. Aar each po:liay in this alemanl, Tab: ei 3.EJ ideiritificis the typla aflacitiorn required, 1ha anrtit)l ar
entiticis rasplor.isibla for taking the action, the liming, and whathler or not 1ha poflay neeassitates a
capital expendituna.
To implemicinl the 9tarrumatar Managemanl Sub-Blemant, semeral typos aflacticns miust ba igen.
11hlase include, but ara not lim:iled la: devielopmiant of naw stormiwalar facilities,
uplgrading/relrofitt:ing existing starmwatcr facihiticis, remising land c aualopment regulations and
ordinances, intargaviarnrr.icintal coordination and axecution of :inlarlocal a€lreemcirr s, establishing a
stormwater uliliq, anc develloplmarit and adoption cif Ia stonnwiatar mastar plan.
C ammuinityl Develcip rrieml DeparlrrieW Indian River C ounlyl 4_`I
Campreberisive Muni Starmwater Mamiagement Sub -Element
Overall] plan implamenitalion reisponisibi:lity will rest with the Public )Monks departmieinit. Besides its
rasponsibilities as identified in I.E.]. 1ha Clommiunity Dtivedopment Deipartmcinl has the addit:icnal
rasponisibihity oflanswinig that cilheir entitlas d;isahange thair riesponisibi:litlas. This will antail notifying
cillhar applicable departmiants oflcapitall axpanditures to h a iincduded in their budgets, niot:ifyjinig cilhlar
dapartmanls and groups aflactions lhlat must ba taklen, and assisting cthler dapartmants and agancies
ini thair plan implementation reisponisibi:liitias.
EVA DUA TION & M C NITO RING IRMOCEDIURES
To be affective a plan must riot only provida a means fors :implemenlat:ion; it must also provide a
mechanismi fbri assessing the plan's effectiveness. Generally, aplan's affbctivaness can ba aualualad
by 11. la c agree to whl:ieh the pllan's objectives have beien aclfavad. Samoa objactiivas ara structurck, to
ba measuiiable and to hlava spac;ific tima frames, llhei plan's objectives ara lha banahmarkls usad as a
basis to avaluala the plan.
Tabla -3.E.3 idenitifias each of lha objact:ivas aflthlo Slormwater Managament flub-Ellament and lhla
measures used to evaluate pragrass in achlieiviing Lhasa objact:ivas. Mast of thlesa measuiies ara
quantilativa, such as adopted pollutant ]lead reduelion goals, imiprovarnents to existing slarmiwatari
management facil:illies, and adapted intergovernmental cooridiniallion miachan:isms. ' labla 3.H.3 also
idcnlifies an anticipated time fiiame associated with) maeting the object:iues.
Tha Community Davalopment Dapartmar.it stafflwila be iia:iponsible for Lha ovorall monitoring and
tivaluating thle Stormwaler ManaBament Sub-Hlemelnt. TiLle Clcmmiunity Deiueilopment Dapartmar.it
will eactnd:inate with) thle Pub:lic)Morkls llapartment to ah lain information ra8andinig f�ic:illity capacity,
capita] imprcvamienit projacts, and flood pnotact:icn toluol]-of-sarvice. Also, tha Community
Dleve:lopmanl Department will assist the Fuhlic Works Deparimient in devalopir.ig a'Ilarmwaleri
Masters Plan.
While monitoring will occur on a continual h as;is, fbrmal evaluation afllhle Stormwatar Managemant
Sub-Hlemanl wall] occur every five (5) years in corniunctiien with thlo Evaluation and Appraisal ofthla
Comprehensive Alan. Hasides assassing pragrass, the Evaluation and Appraisal Rlelpori (HARD will
also ba used to delarmine ifl thla Stormwater Managemarrt Sub -Element's objactivos and policies
should be maintained, raviwd or dellatcd. In this wary the micniitoring and evaluation of lhla
Stormwater Marnagemanl Sub-Elamient will provide a mcians of c atermining tha degree oflsuccass of
thla plan's imp]amentation, as well as, providing a macif. anism fbr evaluating needad changas to this
Sub-Elorriant.
CommunilyDevelapmeril Deparlmeril Ir idliamiRherCaunit}l 46
C olmpreh emaive Plant Sterrriwlater Manlagement Sul-Hlernertll
TABLE 1
Stormwater Management Sulb-Elemflnt Impllamentalllialn Matrix
Aolicy
Type ofAction
Rea 11 ansibility
Timing
ClapitalINpenditura
1.1
Alda It 25 ye a v124 hour slorm event a 9 AOS standard
Aublic Worl s
Ongoing
NO
ibi all new dra ina ge iyslems
1.2
Regulate construction in EIHMA flood zones
Aublic WonksjCorn munity
Ongoing
NO
Deve la Imenl Depa rtrr ent
1.3
Hmune adequate SWIM facilities ane constiucted and
Aublia Worl s
Ongoing
YES
maintained to pnevenl sheet flooding
1.4
Design storm sewais to aanncy discharge aflei
Public Worl <.
Ongoing
NO
ta ilwa ler conditions ara considered
1.5
L esign bi idgcs ilo wilhsland 100 yeai,B day slorm
Aublia Worl s
Ongoing
NO
1.6
Coordinate sizing of culverts wits FIS 298 Districts
public Woi ks/FIS 29 8
Speaial L istricls
Ongoing
NO
1.7
Requirc wide drainage easements in subdivisions
Aublia'Alorks/Planning
Ongoing
NO
without retention, deilerilion facilities
1.8
Require all SWM facilities outfalling to FS 299
But Iia 'Alorks/Planning
Ongoing
NO
District canals be aomplelecl prior to CI.CI. issuance
Reconstruct existing daainage syslems and awlore
2.1
design cagacity of roads under Pel itis n Paving
Aublic Worl s
Ongoing
YES
program
2.2
Ilmpiove AOS slandauds fai roads
Aublic Worl s
2020
YES
2.3
LCIS itarulards Eoi all drainage basins
Aublia Worl s
2020
YES
Require new developmenl ,files 1a accommodale 1.25
2.4
limes the imilarvious surlaea area or 0.1 inches limes
Aublic Worl s
Ongoing
NO
the projaatarea.
2.5
Adopt SlormwalenMaftanAlan
Aullie 'Alorks/Planning
2012
NO
2.6
Establish defined levels ofmaintanance and eanduat
Aublia Worl s
Ongoing
NO
nautine infpaclions ofSWly laoililies
Re quit a existing developmenlf under going
2.7
radevelopmenl 1a mec l iequiiements for nev
But lie'Alorks/Planning
Ongoing
NO
developmenl
2.8
Rabofil Vaioflake Hsilalei chainaga system
Aublia Works
Ongoing
ii HS
2.9
Conducl inveniloq 1 a II SWM faciliil ies under county
Aublia Works
2012
NCI
jurisdiction
2.10
F slablish a G.I.S.-based inncnlaryl ofSWM facilities
Aublia Works
2012
NCI
under county.jm isdiclion
1.1
Include SWIM facility irrpranamant program in the
Aublic Waiks/Planning
Ongoing
NCI
C olmmulnlilly Develallnriert9 Heprllmlertll Inclianl River Couinly Z I
Camprehenlshe Plan Si cramiater M anagement Sulh-Dlemenll
TABLE ]
Stormwlatur Mlanagem nit Sub-Elemflnt Implementallion Matrix
Policy
'Hype ofAciion
Res passibility
'liming
Clapital Hxpenditura
Inflaslnuctura aapilal improvement! plan
Ina ludo drainage the ililies to servieupstiearn
3.2
wailenshed anea & allmajoi transporta lie a
Aublia Vdorks
Ongoing
YES
impnovemeni prgjaats
3.3
Hatal lish pnionitias fan capital improvements pnojccts
Aublia'Ali
Ongoing
YES
3.4
Considen ental lishing a s'lormwatan utility fund
Hul lic'Ala nks/Planning
2012
NO
4.1
Atte nd ma a l Ings of s la le, fa do ra 1, negional, a nd loo a l
Publia Vdorks
Ongoing
NO
government agencies
4.2
Request ilorrnia l mi viith SJRWMID and AS 293
SIR"IEI/Public Woi ksd
2010
NO
Distriat nepnesant tivas
FS M District -
4.3
Inaludo nepiesantalive from drainage distriats on
Manning
Ongoing
NO
Tea I n is a 1 Review Cls mmiitl ee
4.4
Coondinata viiih local gavernimienis and FS 298
But lin 'Ali'AliOngoing
NO
Distriats
4.5
Encounage municipalities to adopt storrriwaten masten
SJRWMID/Public Wlanks
Ongoing
NO
plans
5.1
Pnohibil anaroaahmianl innegulatorylfloadviays
Plaaning/Eublia Works
Ongoing
NO
5.2
Continue la acquire aonserwation land in d a 1t ( year
Alanning
Ongoing
YHS
floodplain, contingent upon available finding
5.3
Enforac cul and fill balance nagulations in the H 0 year
Alit lic Wlanks
Ongoing
NCI
floodplain
5.4
Pnesarvenatunalfdricilionsofwetlands
Alanning
Ongoing
NCI
6.1
Require on-site netention in acoandanaa wits
Hublic Wlaiks
Ongoing
NCI
SIRWMEI and HDHP nequinemenls
6.2
Continua to nequine rause of stormv a'ler Aw irnigalion
planning
Ongoing
NCI
wits wet ponds gneator Ihan one aaro
6.3
Explonc feasibility all devalalling starmwaten parks to
Hlanning
20]2
NO
naahango the su�cial aquifeii
7.1
Coopenale with gavcrmmienl aganaics to conducl an
Planning
Ongoing
NO
invantaryl of pollutant loadings to the IRL
72
Reduce suspended salidsIyllavingnoadswitl
PublicWonks
Ongoing
YE 19
drainage systems that discharge la the IIRL
7.3
Require erosion control plans
Planning
Ongaing
NO
7.4
Clperate sIre al sweeping pnogram
Public Wonks
Cingoing
NO
Communlit3j p emelopmenit Deprtment llnldian River C c unty 48
Camiprdensive Plant Starmwalter Man agement Sub -Element
TA BLD 1
Starr mwatf It Man a gelmen I SuH-E] emen t lmplelmeln I atiam M a I i ix
Policy
70ype of Aa lion
Aesponsil ility
Timing
Capital Hxpenditura
7.9
Requira sodding/mulching of slopes
Put Iia Alorks
Ongoing
NO
7.6
Reduce polluilanil loadings to IRI ; solicil silale and
: JRMWIII/Hublic Woiiks l
Ongoing
NO
tledeial grants to construct SWM facilities
Alanning
7.7
Ellimimto paint source pallution and OSDS pallution
I]FIRS/FDEIHISJRWMD)l
Ongoing
NO
filom tho IRL and the USJRH
Utilities
7.8
Pnohibit WWTH dischanges from enlering the IRL
I JRWMIII/FIDEIP/DIHRI iI
Ongoing
NO
Hlanning
7.9
Require now grows and replanted guavas to
Hi9 WCID/Planning
Ongoing
NO
implement conseni,lion plans and use HMIs
7.10
Requina retantiomdetention in accoidanco vrith stale
Hublia Works
Ongoing
NO
ro quii errents until TN/.DL standards are established
7.11
Requina existing uses la mac l NNIQLOS a1 lime of
Hublia Works
Ongoing
NO
radcvelopmenl
7.12
Require surface walenbodies oval % acie ilo include
Hlanning
Ongoing
NO
littonal zone plantings
7.13
Puisuo it rant filnding to astablish filtialion syslen s in
Hublia Worl s
Ongoing
YES
the North and South Main RalialCanaIs
8.1
Allow only low-density zoning in 100 you floodplain
Hlanning
Ongoing
NO
Assess drainage capability of lands proposed fon
8.2
change in land use do signal ion; prohibit land use
Hlanning
Ongoing
NO
changes ildrainage servioc levels aie not nell
3.1
Hromole infill devolollmant by irrproving existing
Pict lie Alorks/Planning
Ongoing
YES
drainage facilities
Commur ity Devel alpmenit DuElartmenit Indian Milder Cou nitj 4 q
Ccmprelienisli`lei Plan Stcraimiateir Management Suit-Hleirrienill
'HABLE 2
STO RMWA TER MANAG EMENT SU &ELEMENT
EV ALU ATIO N MA'HR7 X
C EIJECTIV E MEASURE 'NAME F RAME
iI Protech c clvelopmclnl from 2-I yearil24 Hour storm 203(1
2 Fllclod Protoclt:icln Laval of Service IJFIHLOS) f6n ala 202(1
drainago basins
3 Adoptcld 81 armwater Master H11an 2011
4 Eslabl:ishl formal cloaparat:iva :instar-gavarnmenitall 2011
halal ionsHips
5 Mair.sta:in the CIEMB la sarva as a flcicldp.lainl Ongoing
managament plan apprclvcic by FEMA
6 Availab.'Ility of groundwalerl in the surficlial aquifer 2(130
7 Mair.li Water Qual'q L clvel-of-Service (WQL OS) Ongoing
si andards
8 Land uses arlc denlsit. as in ciclmlplianacl with 11.1a Flutwe 2(130
Land Use Plan map
P (lammunity Developmenl`Compiehensive Plan Hlemients`CDEANED OF COMP HAN EJAMEI TSUA
9lormwalem Mgt Sul-Hlemien'I.dac
Camitnum it}l Dlemlelopmemt Deipartment llnd'an R'veir C aunt}l 50