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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Location <br /> <br />South St. Vrain Creek <br /> <br />a. at mouth <br /> <br />b. at Immed, D/s of <br />confluence with M. <br />St, Vrain Creek <br /> <br />M, St. Vrain Creek <br /> <br />c. at mouth <br /> <br />d. at Peaceful Valley <br />(State Route 72 <br />Bridge) <br /> <br />Table 4 <br />PEAK DISCHARGES AT SELECTED LOCATIONS <br /> <br /> Mean <br />Drainage Watershed <br />Area Elevation <br />(Square Mile) (Feet) 10-year <br />92 9.040 1,400 <br />66.7 9,750 1,220 <br /> <br />32,4 <br />18.7 <br /> <br />9,620 <br />10,510 <br /> <br />590 <br />470 <br /> <br />Peak Discharge (cfs) <br />50-year 100-year <br /> <br />3,750 <br />2,790 <br /> <br />5,430 <br />3,990 <br /> <br />1,430 <br />860 <br /> <br />2,000 <br />1,180 <br /> <br />10 <br /> <br />500-year <br /> <br />11,900 <br />8,560 <br /> <br />4,070 <br />2,320 <br />