7920

• UCREFRP Catalog Number: 7920
• Author: Van Steeter, M. M., J. Pitlick and B. Cress.
• Title: Aerial Photograph/GIS Analysis and Field Studies of the Grand Valley and Ruby-Horsethief Canyon of the Colorado River.
• USFW Year: 1995.
• USFW - Doc Type: \
• Copyright Material: NO

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48

Table 9. Summary of Hydraulic Data (USGS Gage, Old Site)

---------------------------------------------------------------------------------------------------------------------

discharge = 77 m3 I s
xsect h (m)

u (m/s)

---------------------------------------------------------------------------------------------------------------------

't*

't (N 1m2)

Sf

1 2.57 0.48 0.0001 0.002 1.8
2 1.91 0.51 0.0001 0.003 2.2
3 1.54 0.53 0.0002 0.003 2.6
4 1.13 0.63 0.0004 0.005 4.1
5 1.00 0.67 0.0005 0.006 4.8
6 0.80 0.76 0.0008 0.008 6.6

reach average 1.49

0.60

--------------------------------------------------------------------------------------------------------------------

3.7

discharge = 538 rn3 Is
xsect h (rn)

u (m/s)

---------------------------------------------------------------------------------------------------------------------

't*

't (N 1m2)

0.0003

Sf

0.005

1 4.24 1.98 0.0006 0.030 24.3
2 3.52 1.88 0.0007 0.029 23.4
3 3.08 1.84 0.0008 0.029 23.2
4 2.58 1.92 0.0011 0.033 26.9
5 2.35 1.95 0.0012 0.036 28.8
6 2.00 2.12 0.0018 0.044 35.7

reach average

1.95

------------------------------------------------------------------------~--------------------------------------------

27.1

2.96

discharge = 1255 rn3 I s
xsect h (m)

u (m/s)

1
2
3
4
5
6

5.57
4.86
4.41
3.89
3.63
3.25

3.37
3.11
2.92
2.88
2.89
2.98

reach average

4.27

3.03

0.0010

Sf

0.0012
0.0012
0.0012
0.0014
0.0015
0.0019

0.0014

0.033

't*

't (N/rn2)

0.079
0.071
0.064
0.065
0.067
0.075

64.3
57.3
52.1
53.0
54.6
60.3

0.070

56.9