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<br /> <br />I <br />I <br />I <br />I OBSERVED GAGE RECORD 25,000 CFS HISTORICAL FLOW <br /> FOR THE 1969 FLOOD <br />I EXPECTED EXPECTED <br /> RETURN PROBABILITY COMPUTED PROBABILITY <br />I PERIOD FLOW FLOW FLOW <br />YR CFS CFS CFS <br />I 0.002 35600 48600 35100 48500 <br />(500 YR) <br />I 0.005 27700 34900 27300 34700 <br />(200 YR) <br /> 0.010 22500 26900 22200 26800 <br />I (100 YR) <br /> 0.020 18000 20600 17800 20400 <br />I (50 YR) <br /> 0.040 14100 15400 13900 15300 <br />I (25 YR) <br /> 0.100 9660 10200 9580 10100 <br />II (10 YR ) <br /> t <br /> 0.200 6820 7000 6780 6960 <br />I (5 YR) I <br />0.500 3550 3550 3540 3540 <br />I (2 YR) I <br />0.800 1880 1840 1890 1840 <br />I 0.900 1360 1300 1370 1300 I <br /> 0.950 1050 973 1050 974 I, <br />I <br />0.990 643 553 647 553 <br />I 1 <br />I I <br /> 4.0-9 <br />I FILE: GAGES.WK1 I <br /> <br />