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03/09/ 2007 13: 03 3063294499 SJRMC WATER <br /> Rc aJRC PAGE 03/ 04 <br /> f , Fort Drum Marsh Conservation Area M A1 , <br /> specified in Interim plan 2. Operations . will be as • " , <br /> g • S 6 . JohnsEly' <br /> od Plain . Part of L- 7411 and Culvert struature <br /> S-255 will be compTete prior to . this interim plan , S-2s5 has flapgates which <br /> Permit water to flow freely from east side of L -701 to the floodplain of the <br /> St . Johns River , <br /> T-09 . Interim plan S . During this interim plan L»7411 Remainder , L- 82 , and <br /> S-257 will be constructed, $4258 will' be functional . The FDMCA , BOMCA , <br /> BCWMA , and the SJWMA will be fully functional during this interim plan . This <br /> interim plan will' •be used until the coinpietimn of Contracts 53 , SC , and So <br /> which will be the completion Of All project features . <br /> a , Jane On DDetention Area , : Operations will continue as specified <br /> in Interim Plan 1 . <br /> b . Taylor. Cr e Reservoir . Operations will continue as specified in <br /> Interim Plan . 1 , <br /> C6 St . 3ohns Water Mana4emant 'pre, ( c_Mgjs Operations will continue <br /> as -specified in Interim plan 3 . <br /> d , Btue. .Cwre s Marsh CunsI Area (MA) . Operations wird be <br /> as sperifted under IdtrT-im pian 44 <br /> a`. 11ttisr • Manaaement <br /> . .Area (MMAi , Mater in the BC1 <br /> will be seasonally regulated between etevations . . and 25 . 5 {t „ WWMAM <br /> The regulat•.ion • schedule is found ' Orr rtgure 7» 4', When t e s age is i Zone A, <br /> S -96D 'wit } be used to melee maximum releases to the Sam, The. spillway gates <br /> shall be opened and closed gradually to provide an even transition to the new <br /> flow regime and to minimize the hydradlic effects downstream . The correct <br /> gate setting for S- 96D can be determined from pgthe ,Discharge Rating Curves <br /> found in additional Appendix <br /> ndSJRWM culvert rSPP conditious3 is{rom�tE�eoBGWMA e Of nto theiSJWtdk. When <br /> mahyo be Ica <br /> S 3onismayBre al o be opened foror eD ialviironmentAl Water and - water pirposes <br /> easereleases . S - 251 will normally opened for <br /> S-251 will he used to control <br /> —� <br /> East- BCWMA to prevent ovardrainage of :the east. por 36 ,— <br /> private levees bordering the East BMA , and to prevent reverse (bows at high <br /> stages from the West BCWMA to the East BCWMA , If the stage in the West BCWMA <br /> is greater than 25 , 0 ft . and is also greater than the stage in the East BCWMA, <br /> then S-251 should be closed . 5 -254 may also be closed for environmental <br /> purposes . S - 254', a weir structure , located in the western portion of L -77 <br /> will prevent the build up of head an fha levee . hater will flow freely over <br /> the weir when the water surface reaches elevation 26l6Water <br /> ft . , flowNGVD into the. <br /> BCMGA to assure popt -prn5ett flood stages ( abava the weir elevation) in the <br /> flowway and south of the turnpike that are Tess than or equal to pre project <br /> conditions , Stage vs , Storage data fo`r the SCWMA is found on Table 7 - 6 <br /> located at the end of the chapter , <br /> 78 i <br /> 474 <br />