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Camiprehensive Mani Starmwailer Mania3,emenit Sub -Element <br />GOAL, OBJECTIVES, AND POLICIES <br />GOAL <br />Indian River Counity shall provide and maintain a dra:i na ge systeim which riedumis th a risk) of prapcirty <br />damqa aric :incanvaniiance from long tarm flaading, promalas stormwzteri rachlarga of the shallow <br />aqu:ifdr, raduaes stormwattir pol:lWant loading of 1ha Indian Mar Llagoor.i and reeaiving walars and <br />piiovides proper flaadpllain mariegemant. <br />OBJECTIVE l Fl clad Brotectficm <br />By 21030, all uxistfing and new devcdopment in the unincorporated secilian of Indian 11iNeir <br />C ounty will He protected from f loodin g from a 25 yeari124 Hour storm event. <br />Poliej Tlha county hlcmaby adopts the killowang levell-c6servica standard for all new <br />drainzga systems wilhin tha unincarporaled counq: Naw davelopmanl raquiiring mai'or sila <br />plan approval or sub diivisian platting shlala canstruct a drainage system capable of mitigating <br />tha impacts afl a 25 year/:14 hour dasa8n raiinfall event using lhla Nalural Rasaurca <br />Coniscirwtion Sarvica (MRCS; Type 2 miadified rainfalll curuas. Post devellapmiar.it runoff <br />she 11 not exeaad pra-davalopmanl runoff unless a m a ximum disahlarge rata he s baeni adoptad <br />for thle applicable drainaga basin and the discharge does nat axceed thlal rate. If a maximum <br />discharge rata has not bean adapl ad for thle applicable basin, posl dave:lapmiant dischlarda may <br />not axceed pra-davelopmanl dischlarga. <br />Balicy 1.2: Tha fiinishled floor e:lavat:ion of any naw bui:Iding (ionstruictac within a SFHIA), es <br />designiatad ori tha most currant Blood Inswanca Rata M zips (IFIR.M s) cif lthe National Hload <br />In.iuranca Brograrn (NBIP), shall be sub. 'ect la the following requixaments: <br />➢ "AE" zone - structures must be e:laveted a minimum oflsix (1E; iinahas above tha base <br />f lood level; <br />➢ "A" zone - stiuctures ni ust be elavated a minimum of 1 f1 inches abava tha crawn of <br />tha road or al the alevationi requ:ireic by tha 11HIRS, whichever is higher; if no base <br />flood data ara aveUab] e, Ihla slructure must ba elavated at leasl dulea (=1; fiat at ova the <br />blighlest r.iatwa:l elavatiian or the glraund surf6ae prior to aonstruict:ian next to the <br />propased walls of tha struictura; <br />➢ "VE" zor.ia - slructures must ba alevalad so That the batlom aflthle lowasl horizontal <br />slructura'I membar of tha lowest f lacm is elevat®d one-ha:lfl (1/2) fbot ar more above <br />the ba sa flood l avel. <br />C ammuinil yj Develaptnenil D ellairlmiemi Ir. dliani R Iver Cauintj 381 <br />