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Ccmipreihensive Plan SNormwvner Mariaigeimeril Sub-Elleiment <br />plain. Wasil of thio VO Zanei and aast afIHighway AlA Iieis flood zany X. Wast of A 1A, Zones AH <br />exileir.ids la thea eastorn shores of ilhei IRLI. Zlhat zones is part aflthle IRL flaadpllain. <br />Land Use <br />Deve:lopmorrl within Basin E-1 its almost excilusivaly small ros:idontiall subdivisions and scatteircid <br />singlo-f rriily rasideniceis. <br />Capacity Ana]Ns:is <br />Due to thiel excessive parciolailion ralas of ilho dunie soils, thcrei ara no ciapaoity runofflissues in sub - <br />basin B-1, with the eixcieptian of thea Maarings Subdivision (wrest of A l A'. <br />• Sub -basin B-2 <br />Sarvico A.reia <br />Sub -basin H-2 wolands ffom ilha r.iartherni l:imiits of the Cit}{ of Wro Boachl to CRI 5:10 (Wabassa <br />Ram", incilucingl tha m:iddlla one-ilhirc of Orchid llsllanc. <br />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 <br />Park, a small parciolation system at Wabasso E aachl A wile, and a raac wjay swale sNstam along Junglei <br />Trail, Indian Aver Caunq naithler owns nor maintains any stormwatar mariagemant facilities within <br />sub -basin 2. <br />Topography <br />Typicial afIa Caasilal Barriiar Island, elleivatians in sub -basin B-2 ranga fiam Mean 9aa Level (MSL; <br />aking tHa Atlarplic Ocaan Coast:lina iia 20 feat NGVII] aaong the primary duna (300 feert wrest aflthla <br />coast:linci). <br />Structural Bealuras <br />East of A IA, al ilho nari h and of lhei b asin, thlei Claralslonei anc Sea Oaks devellapments ara dasignad <br />to parcialate runoff from a 25 year/24 Hour silarmi event. Wasil of A 1A, a series of drainage pipas <br />route stormwater runoff Ito welt retanlion/detontion ponds prior to dischlarga irate the IRLI. Since <br />1998, the Alorida Dapartment of Trianspartation (ADOT) Has impriovad silarrrwalari manaElamenk <br />faciililies wast oflflighway A IA to provide ratentian and i1matmiaritt oflrunciffl <br />Cc mrr uiriity Demellopment Department Indian River C aunt y Al <br />