FLOOD01114

• County: Larimer
• Community: Loveland
• Stream Name: Big Thompson River
• Title: Channel Roughness Determination Report for Big Thompson River
• Date: 4/15/1981
• Prepared For: CWCB
• Prepared By: Resource Consultants
• Floodplain - Doc Type: Floodplain Report/Masterplan

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III. SUMMARY OF N-VALUES

The selected n-values, based on the descriptions in
Section II for the St. Vrain and North S. Vrain Creeks are
tabulated in Table 2.

TABLE 2

RECOMMENDED MANNING N-VALUES FOR STUDY REACH

Cross Section

Left Overbank

Channel

Right Overbank

2 0.04 0~035 0.04
4 0.04 0.035 0.04
6 0.04 0.035 0.04
8 0.045 0.04 0.045
10 0.04 0.035 0.040
12 0.04 0.035 0.04
14 0.04 0.035 0.04
16 0.05 0.04 0.05
18 0.06 0.04 0.06
20 0.045 0.035 0.05
22 0.045 0.035 0.05
24 0.045 0.035 0.05
26 0.045 0.035 0.05
28 0.06 0.04 0.06
30 0.06 0.04 0.06
32 0.06 0.04 0.06
34 0.06 0.04 0.06
36 0.055 0.035 0.055
38 0.06 0.035 0.06
40 0.045 0.04 0.045
42 0.045 0.04 0.045
44 0.045 0.035 0.045
46 0.045 0.04 0.045
48 0.045 0.04 0.045
50 0.045 0.04 0.045
52 0.045 0.04 0.045
54 0.045 0.04 0.045
56 0.045 0.04 0.045
58 0.05 0.04 0.045
60 0.05 0.035 0.05

---------------------------Continued-----------------------------