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74 Stream-Profile Analyses Using a Step-Backwater Model for Selected Reaches in the Chippewa Creek Basin in Ohio Table 3–2. Water-surface elevation, in feet, along River Styx after decreasing the Manning’s roughness coefficient (n) for the main channel by 5, 10, 15, and 20 percent.—Continued River station 1 28376 28851 29243 29710 29840 29960 30076 30338 30611 30815 31166 31480 31721 31989 32162 32371 32664 32671 32680 32693 32695 32958 33199 33442 33903 34071 34515 34795 35185 35551 35778 36015 36301 36646 36910 36936 36992 37044 37421 37772 37784 37813 Water-surface elevation (in feet) associated with the indicated decrease in the Manning’s roughness coefficient (n) over the entire length of the main channel 0 percent 5 percent 10 percent 15 percent 20 percent 967.57 967.44 967.37 967.24 967.1 967.99 967.86 967.78 967.65 967.5 968.66 968.53 968.42 968.31 968.17 969.33 969.2 969.09 969.01 968.87 969.51 969.37 969.24 969.15 969 969.83 969.69 969.55 969.46 969.3 970.06 969.93 969.79 969.71 969.57 970.44 970.3 970.16 970.07 969.92 971.21 971.08 970.96 970.89 970.75 971.79 971.7 971.61 971.56 971.47 972.37 972.28 972.19 972.15 972.05 972.65 972.57 972.48 972.43 972.34 972.79 972.7 972.6 972.55 972.45 973.16 973.08 972.99 972.93 972.84 973.56 973.48 973.39 973.32 973.25 973.9 973.82 973.73 973.65 973.58 974.26 974.18 974.09 974.01 973.96 974.3 974.21 974.13 974.05 973.99 974.32 974.24 974.16 974.08 974.02 974.32 974.24 974.15 974.07 974.02 974.32 974.23 974.15 974.07 974.01 974.5 974.41 974.31 974.22 974.15 974.93 974.82 974.7 974.58 974.51 975.36 975.25 975.14 975.02 974.94 976.03 975.93 975.82 975.7 975.64 976.4 976.3 976.2 976.09 976.03 976.92 976.81 976.69 976.57 976.5 977.36 977.26 977.15 977.03 976.97 977.87 977.77 977.66 977.54 977.48 978.63 978.52 978.4 978.27 978.2 979.31 979.18 979.04 978.9 978.83 979.79 979.67 979.54 979.41 979.34 980.1 979.96 979.84 979.71 979.64 980.43 980.29 980.17 980.05 979.99 980.59 980.45 980.34 980.21 980.15 980.66 980.53 980.42 980.3 980.24 980.75 980.63 980.52 980.41 980.35 980.75 980.62 980.51 980.4 980.34 981.08 980.92 980.8 980.67 980.61 981.53 981.34 981.21 981.07 981 981.64 981.48 981.36 981.25 981.19 981.87 981.72 981.62 981.52 981.47
Appendix 3 75 Table 3–2. Water-surface elevation, in feet, along River Styx after decreasing the Manning’s roughness coefficient (n) for the main channel by 5, 10, 15, and 20 percent.—Continued River station 1 37836 38096 38378 38754 38787 38811 39074 39267 39530 39810 40142 40484 40773 41022 41373 41721 41948 42001 42065 42168 42355 42674 42925 43167 1 Referenced to feet above mouth. Water-surface elevation (in feet) associated with the indicated decrease in the Manning’s roughness coefficient (n) over the entire length of the main channel 0 percent 5 percent 10 percent 15 percent 20 percent 981.87 981.72 981.62 981.51 981.46 982.13 981.99 981.89 981.78 981.71 982.41 982.26 982.17 982.04 981.94 982.8 982.67 982.59 982.46 982.35 982.85 982.72 982.65 982.53 982.42 982.85 982.72 982.65 982.52 982.42 982.95 982.82 982.73 982.6 982.48 983.29 983.16 983.08 982.95 982.82 983.65 983.54 983.46 983.35 983.24 983.87 983.76 983.69 983.59 983.48 984.05 983.93 983.83 983.74 983.61 985.08 984.99 984.92 984.87 984.79 985.56 985.51 985.45 985.43 985.37 985.83 985.76 985.69 985.65 985.58 986.59 986.5 986.42 986.37 986.28 987.15 987.1 987.05 987.03 986.98 987.31 987.25 987.2 987.17 987.11 987.33 987.28 987.22 987.2 987.13 987.38 987.32 987.27 987.24 987.17 987.49 987.42 987.36 987.33 987.27 987.56 987.48 987.41 987.37 987.3 988.11 987.97 987.86 987.81 987.69 988.66 988.55 988.45 988.41 988.31 988.83 988.72 988.64 988.59 988.5
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In cooperation with the Chippewa Su
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Stream-Profile Analyses Using a Ste
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Contents Abstract .................
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Conversion Factors and Abbreviation
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2 Stream-Profile Analyses Using a S
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