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<br />A stage-discharge relat:ion was obt.aitled by applying the results <br />of the backwater comput:ations fOJ: the 2-, 10-, and 100-yea.r <br />storm events and the St:andard Project flood for the exis'U.nq <br />basin condition. '['he channel improvement.s downstream of th," <br />Kelly Pond were based on the flood routing results wi t.h all <br />the upstream drainage system and det:ention storage improve- <br />ment:,. The design discharges a.t: various locations were pre.. <br />sented in Section VI and Volume II. 1'0 determine the 100"'y,"ar <br />flood plain limits at certain locations after improvements, a <br />channel was first designed for tile de sign discharCje, which ,,,,as <br />established through flood routing processes. A n~w staqe- <br />discharge relation was then established at the specific location <br />by subtracting the difference in discharqe between the existing <br />channel and the improved channel from the st:age"discharqe curve <br />of the existing condition. The :I'looc!. plain limits for the 10- <br />and JOO-year storm events beforEl and aftc>r improvE~ments are <br />shown in Volume II of t:his reporL The "rater surface profiles <br />for 'che 10- and 100-year st:orm event:E. after improvements are <br />also shown in Volume II of this :I:epor.t:. For the watE,r surface <br />profile, flood plain limits, and floodway data for the IOO-year <br />storm event in the reach between Kelly Road Dam and Sand Creek, <br />refeJ~ to the Flood Ha.zard Area Delineation for \i'e~;t.erly Creek <br />prepared for the Urban Drainage and Flood Control District: by <br />Camp Dresser & McKee Inc. in January 1977. <br /> <br />-19" <br />