WSP12249

• File Number: 8240.200.10.B
• Description: UCRBRIP - Riverine Fish Flow Investigations
• Basin: Colorado Mainstem
• Date: 6/1/2004
• Author: CDOW
• Title: Riverine Fish Flow Investigations 2004
• Water Supply Pro - Doc Type: Publication

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
r
I

cr
~
0'.
'"
w
IS
~
o
o

00
~o
'9<<
<l'
-?,...
<<1'

N

W*E

s

Montrose County

San Miguel County

Figure 4. Dolores River study site location in the Big Gypsum Valley,

Site Geomorphology

Of the rivers described in this study, the Colorado River, upstream of the mouth of
the Gunnison River, had the largest drainage area of8,753 mi2 and mean annual flow of
2,912 cfs (Palisade gage, 1991 to 2003), The Gunnison River drainage area was 7,928 mi'.
The mean annual flow recorded at the Whitewater gage from 1965 to 2003 was 2,507 cfs.
The Yampa River at Deerlodge drained an area of7,660 mi2, The annual average flow was
2,100 cfs (1983 to 2003). The Yampa River at the Maybell gage drainage area was 3,410
mi', The mean annual flow was 1,566 cfs from 1917 to 2001 (85 years of record).
The Dolores River at Bedrock drained an area of 2,024 mi2 and had a mean annual flow
(1972 to 200 I) of399 cfs.

The Colorado River had a mean wetted width at 600 cfs of 59 m at Clifton and 50 m
at Com Lake (Table I), The Clifton site was wider and the Com Lake site was narrower
than the mean channel width for the entire IS-Mile Reach (Anderson and Stewart 2003). The

6