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<br />industrial buildings west of South Windermere Street. <br /> <br />In channel <br /> <br />reaches five and seven, the potential flood damage is primarily due <br /> <br />to bridge backwater conditions and subsequent flooding of homes. <br /> <br />I.) Pla~JJCl..:._~~ration an~Ula i rl_t_eJ1aJ~<:_C:__~~CLl'2J'_en~J"\t:~ <br /> <br />Construction of new structurcs, enlargement of existing structures, <br /> <br />and selective channel improvements, as propo:;ed in Plan :\0.2, will <br /> <br />greatly reduce potcntial flood damage and th,c amount of opcration and <br /> <br />maintenance r8quired on the channel. <br /> <br />The nature of Big Dry Creek 1S <br /> <br />a fast-flowing stream with moderate overbank flooding. <br /> <br />Thc Jmprove- <br /> <br />ments proposed in Plan No.2 will reduce the overbank fJooding anel <br /> <br />resultant debris deposits and thus \Vi 11 rcqui re less maintenance expend. <br /> <br />itures for mowing and debris cleanup and rem,)val. <br /> <br />D.) Plan No.3 - Flood Control Dam and Structure and Channel <br />1m ))2:0 vc2~~},-j:.:3.. --{ P 1 ii t8 No. 8 ,-vorLiiilC2~-TTi' lW]Jlgsr-~-----_.' <br /> <br />This plan is based on the constl'uction of a flood centrol dam <br /> <br />south of the County Line Road for detention and gradual releasc of <br /> <br />SO', of the upstream runoff from a 100-ycar frequency storm of six-hour <br /> <br />duration and proposed land use conditions. <br /> <br />(The renlainder of the rnnorl' <br /> <br />would be allO\ved to flo\V through \VLthout det'cIltion). ^ plan for selee:. <br /> <br />tive improvement and/or replacement of stlue:tures \Vas also proposed. <br /> <br />^ll of the proposed improvements are tabulaL,d in Table 11'-7. <br /> <br />Plan No. 3 - Flood Control Dam and Stru~ture and Channel Improve. <br /> <br />ments illustrates the reduction in the floou plnin frol'l a lOO-year <br /> <br />free,uency storm of six-hour durat.i.on ane' proposed land use condit.ions <br /> <br />as a result of t.h8 improvement.s proposed in th,i.s plan. <br /> <br />As in Plan No;;, <br /> <br />I and 2, the reduction in the 10- and 25"year flood plains \Vc,re not <br /> <br />indicated, however, the computed hydraulic results llre availahle in thc' <br /> <br />- (i l- <br />