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<br />- -- <br /> <br />- - <br /> <br />- <br /> <br />- - <br /> <br />- - <br /> <br />----- <br /> <br />- <br /> <br />- -- <br /> <br />ROCK RAPIDS, IOVA <br />SECTION 205 RECONNAISSANCE STUDY <br /> <br />PEAK DISCHARGES COIIPUTED FROM <br />IOVA REGRESSION EQUATIONS (USGS, 1993) <br /> <br />Ploodinl' Sources and Location Peak Dischan.e (cfs) <br /> 2-YR 5-YR 10-YR 25-YR 50-YR 100-YR 500-YR* <br />ROCK RIVER <br />Just u/s from Moon Creek 5,330 11,130 16,060 23,030 28,910 35,220 56,000 <br />Between Moon Creek and Tom Creek 5,390 11,250 16,230 23,260 29,200 35,560 57,000 <br />Just d/s from Tom Creek 5,730 11,910 17,160 24,550 30,780 37,440 60,000 <br />1I00N CREEK <br />At mouth 290 730 1,150 1,820 2,440 3,130 5,700 <br />TOM CREEK <br />At mouth 950 2,220 3,380 5,150 6,710 8,440 13,500 <br /> <br />* 500-YR Discharge extrapolated using log probability paper <br />