9366

• UCREFRP Catalog Number: 9366
• Author: Upper Colorado River Recovery Implementation Program.
• Title: 1999 Coordinated Reservoir operations Bypasses for Endangered Fish.
• USFW Year: 1999.
• USFW - Doc Type: \
• Copyright Material: NO

III. Climatic Factors
Streamflow and Mean Temperature:
Figure 1 illustrates the relationship between streamflow and temperature. The intent of Figure 1
was to determine if there was a relationships between the peak flow at Cameo and mean daily
temperature at Glenwood Springs, as a way of estimating the timing of the spring peak flow. As
Figure 1 illustrates, in 1999, approximately three days after the mean temperature at Glenwood
Springs reached 60°F for an extended period, the flow at Cameo peaked. This trend appears to be
consistent with the past three water years. The data show that when the average daily
temperature reaches 60°F for an extended period, the streamflows peak anywhere from two to
five days later.
Figure 1
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1
1
1
1
1
1
1
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1
'Comparison of Streamflow @ Cameo and Temperature @ Glenwood Springs
4000-
2000-
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IM

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r yr
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er <<
rr
4000
2000
0
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A
D
90
80
Flows at Cameo
70 -- - - - Mean Temp at
Glenwood Spgs.
W
LL
CL
50 m
id
400
C
A
m
30
20
10
0
5h 198 M 7199 5121 199 501198 BM 0199 8/20/99 800199 V10199 MAM MO
Water Year
6