8208

• UCREFRP Catalog Number: 8208
• Author: Osmundson, D. B., P. Nelson, K. Fenton and D. W. Ryden.
• Title: Relationships Between Flow and Rare fish Habitat in the '15-Mile Reach' of the Upper Colorado River.
• USFW Year: 1995.
• USFW - Doc Type: \
• Copyright Material: NO

200
35
30
25
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in
D
L 15
H
10
5
0
6
0 5
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2
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w 2
1
0
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D
Cf)
100 0
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`.
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40 D
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2870 1630 1530 1240 810 557
DISCHARGE (CFS)
BACKWATER EDDY POOL OSLOW RUN O FAST RUN
Figure 16. Total area (top graph) and total weighted area (bottom graph) of preferred habitats.
Total area of each preferred habitat type at each flow level was multiplied by the preference score
for that type; the preference score was the mean difference between use and availability. Weighted
area is less than total area because the preference score multiplier is generally <1.0. Total weighted
area is therefore a relative value for making comparisons among flow levels; it takes into account
the total area of each preferred habitat type and the degree of preference for that type. See
Appendix Table Y V for calculations.
34
2870 1630 1530 1240 810 557