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figure 3 - Bear Creek, view west to SherIdan ~Iva. ,,-:, ;;.t<". __,~-"" -,;-,,:1_" ",Z'::.~' '..{" r:'~,. .:-,- " >,' c!9ure 4 - View d~nSTreem Trom ~adsworth Blvd, 4 Development on the flood Plain The flood plain In the study ceach averages about 1,500 feet wide. Development bogan near the mouth of Bear Creek and has progressed up- stream. The flood plein Is about 70 percent developed In the reach trom the mouth to Wadsworth Boulevard. from Wadsworth Boulevard to the up- stream limit of the study reach there Is lfttledevelopmentMdagrlcul- turelsthepredomlnentuse. Land use In the overall study reach Is ebout 12 percent commercial, 24 percent residential, 9 percent trans- portation, 4 percent public property, with the balance In miscellaneous uses. In 1970 about 6,050 people lived In the Bear Creek flood plain In the study reach, An estlmeted 1,600 persons are employed there. With expected gceater development Inthoaroa It will becorne Increasing Iy Important to regulate building In tho flood prone areas Iflncreas ed rlskot future flooding Is to be avoided, Flood History In the Study Reach The Bear Creek channel has a capacIty of about 2,500 cubic feet per second (c.f.s.l without causing flood damage. Floods In the basin usually result from Intense rainstorms In the SUnYl18r months. The Sheridan stream gogo, with stream tlow records from 1927 to the present, Is located at Lowell Boulevard. Asecondstreamgagols located at Morrison, about 2 mIles upstream of the study reach, with partial records datingbacktolB88. Table I shows the largostfloodsthatworerecorded at the gagos since 1927. Table I fLOOD PEAK DISCHARGES ON BEAR CREEK Sheridan Gage MorrIson Gage Maximum I>bxlmum Discharge DIscharge Year Date (c.f.s.l (c.f.s.l 193J 7July 3,000 8,110 1934 9 Aug. 1,300 4,620 '93" 2 Sept. 2,810 6,200 1957 21 Aug. 2,560 1,640 1965 25 July 2,900 1,030 1969 n., 8,150 2,340 5