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Stream-Profile Analyses Using a Step-Backwater Model for ... - USGS

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Appendix 3 61<br />

Table 3–1. Water-surface elevation along Chippewa Creek after decreasing the Manning’s roughness coefficient (n) <strong>for</strong> the main<br />

channel by 5, 10, 15, and 20 percent.—Continued<br />

River<br />

station 1<br />

24137<br />

24488<br />

24885<br />

25238<br />

25572<br />

25962<br />

26370<br />

26704<br />

27089<br />

27400<br />

27785<br />

28246<br />

28346<br />

28391<br />

28517<br />

28861<br />

29199<br />

29592<br />

29865<br />

30191<br />

30484<br />

30794<br />

31146<br />

31578<br />

32011<br />

32479<br />

32951<br />

33360<br />

33751<br />

34155<br />

34277<br />

34348<br />

34451<br />

34776<br />

35181<br />

35580<br />

36039<br />

36176<br />

36467<br />

36932<br />

37314<br />

Water-surface elevation (in feet) associated with the indicated decrease in the Manning’s roughness coefficient (n)<br />

over the entire length of the main channel<br />

0 percent 5 percent 10 percent 15 percent 20 percent<br />

946.5<br />

946.2<br />

945.96<br />

945.62<br />

945.22<br />

946.57<br />

946.27<br />

946.03<br />

945.69<br />

945.29<br />

946.63<br />

946.34<br />

946.11<br />

945.77<br />

945.38<br />

946.65<br />

946.36<br />

946.13<br />

945.8<br />

945.41<br />

946.69<br />

946.4<br />

946.16<br />

945.84<br />

945.45<br />

946.72<br />

946.43<br />

946.2<br />

945.88<br />

945.5<br />

946.81<br />

946.53<br />

946.29<br />

945.98<br />

945.59<br />

946.83<br />

946.54<br />

946.31<br />

945.99<br />

945.61<br />

946.88<br />

946.59<br />

946.36<br />

946.04<br />

945.66<br />

946.91<br />

946.63<br />

946.39<br />

946.08<br />

945.69<br />

946.95<br />

946.67<br />

946.43<br />

946.12<br />

945.73<br />

947.01<br />

946.72<br />

946.47<br />

946.16<br />

945.77<br />

947.02<br />

946.73<br />

946.48<br />

946.17<br />

945.78<br />

947.04<br />

946.74<br />

946.5<br />

946.18<br />

945.79<br />

947.06<br />

946.77<br />

946.52<br />

946.21<br />

945.82<br />

947.16<br />

946.87<br />

946.62<br />

946.32<br />

945.93<br />

947.2<br />

946.91<br />

946.66<br />

946.35<br />

945.97<br />

947.26<br />

946.96<br />

946.71<br />

946.41<br />

946.02<br />

947.3<br />

947.01<br />

946.75<br />

946.45<br />

946.06<br />

947.36<br />

947.06<br />

946.8<br />

946.5<br />

946.11<br />

947.41<br />

947.11<br />

946.85<br />

946.55<br />

946.16<br />

947.46<br />

947.17<br />

946.9<br />

946.61<br />

946.22<br />

947.51<br />

947.21<br />

946.95<br />

946.65<br />

946.26<br />

947.58<br />

947.28<br />

947.01<br />

946.71<br />

946.32<br />

947.65<br />

947.34<br />

947.07<br />

946.78<br />

946.38<br />

947.72<br />

947.41<br />

947.14<br />

946.84<br />

946.45<br />

947.8<br />

947.49<br />

947.22<br />

946.93<br />

946.53<br />

947.85<br />

947.54<br />

947.27<br />

946.98<br />

946.58<br />

947.91<br />

947.6<br />

947.32<br />

947.03<br />

946.64<br />

947.97<br />

947.66<br />

947.37<br />

947.09<br />

946.69<br />

948<br />

947.68<br />

947.4<br />

947.11<br />

946.71<br />

948.02<br />

947.71<br />

947.43<br />

947.14<br />

946.74<br />

948.04<br />

947.73<br />

947.45<br />

947.16<br />

946.77<br />

948.11<br />

947.79<br />

947.51<br />

947.23<br />

946.83<br />

948.18<br />

947.87<br />

947.58<br />

947.3<br />

946.9<br />

948.24<br />

947.93<br />

947.64<br />

947.36<br />

946.96<br />

948.32<br />

948<br />

947.71<br />

947.43<br />

947.03<br />

948.34<br />

948.02<br />

947.73<br />

947.45<br />

947.05<br />

948.41<br />

948.08<br />

947.79<br />

947.51<br />

947.12<br />

948.49<br />

948.17<br />

947.87<br />

947.6<br />

947.2<br />

948.54<br />

948.22<br />

947.92<br />

947.65<br />

947.25

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