7848

• UCREFRP Catalog Number: 7848
• Author: Burdick, B. D.
• Title: Minimum Flow Recommendation For Passage Of Colorado Squawfish And Razorback Sucker In The 2.3-Mile Reach Of The Lower Gunnison River
• USFW Year: 1997.
• USFW - Doc Type: Redlands Diversion Dam To The Colorado River Confluence.
• Copyright Material: NO

1400
1200
1000
800
03 600
400,
200
0
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Post-Aspinall Water Development, 1967-1995
Low-Water Years
Mean of 5 Low Years --13-1990 I
(1972, 77, '81, 'a9, '90)
! b-------------- - - - - - - - - - -
Q
Q
cS d
----- ---------------/
b
Recommended 300 cis I?
Minimum Flow Level
In-the 2.3-rnlle reacts - - - - - -
ha rm 300 cis .p
ss
APR MAY JUN JUL AUG SEP OCT NOV
Month
Mean Daily Flow for Five
Low-Water Years
(1972, '77, '81, '89, '90)
--------------------------------------
--------------------- -----------------
Peak Day 3,460 cfs
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - 3D0 cfs Minimum Flow- - - - - - - - - - -
In the 2.3-mile Reach
of the Lower
972 1'172 Gunnison River
774- 849- - - 838 - - - - - - - - - - - - - - - - - - - - 772- -
638
524 504 32B
377
250 255
MA1 MA2MA3 JN1 JN2 JN3 JL1 JL2 JL3 AG1 AG2 AG3 SP1 SP2 SP3 OC1 OC2OC3
MAY JUN JUL AUG SEP OCT
Figure 8. Mean daily flow (cfs) and shape of the hydrograph for five low-water
years (1972, 1977, 1981, 1989, and 1990) compared to 1990, a low,
low-water year from 1 May to 31 October in the 2.3-mile reach of the
lower Gunnison River between the Redlands Diversion Dam and the
confluence with the Colorado River (to ). The bottom figure
represents the mean daily flow for 1 May through 31 October for the
2.3-mile reach by 10- and 11-day step increments, e.g., May 1-10,
May 11-20, May 21-31, etc.
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