FLOOD10043

• County: Larimer
• Community: Fort Collins
• Stream Name: Fossil Creek
• Basin: South Platte
• Title: Documentation for Selection of Manning's Roughness Coefficient for Fossil Creek Master Drainageway Planning Study
• Date: 12/1/1981
• Prepared For: Larimer County
• Prepared By: Simons Li & Associates Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Table 2. Summary of Roughness Coefficients, n-values.

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n-value
Left Right
Figure Number Location OVerbank Overbank Channel
Figure 2 Fossil Creek at County Road 11, .045 .045 .035
looking downstream
Figure 3 Fossil Creek at County Road 11,
looking upstream .045 .045 .035
Figure 4 Fossil Creek at Union Pacific
Railroad, looking downstream .045 .045 .035
Figure 5 Fossil Creek at Union Pacific
Railroad, looking upstream .045 .045 .035
Figure 6 Fossil Creek at County Road 34,
looking downstream .045 .040 .035
Figure 7 Fossil Creek at County Road 34,
looking upstream .040 .040 .035
Figure 8 Fossil Creek at County Road 13,
looking downstream .040 .040 .035
Figure 9 Fossil Creek at County Road 13,
looking upstream .045 .045 .040
Figure 10 Fossil Creek at Private Crossing,
looking downstream .045 .045 .036
Figure 11 Fossil Creek at Fossil Ridge
Drive, looking downstream .050 .045 .036
~o'fi>
Figure 12 Fossil Creek at Fossil Ridge
Drive, looking upstream .045 .045 .035
Figure 13 Fossil Creek at Highway 287,
looking downstream .045 .045 .035
Figure 14 Fossil Creek at Highway 287,
looking upstream .045 .045 .035
Figure 15 Fossil Creek at Colorado and
Southern Railroad, looking
upstream .040 .045 .035

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