2010-252A (02) - Laserfiche WebLink

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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