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

LOWER GUNNISON RIVER
Plunge Pool
2500
2000
11500
u
0
v.1000
500

Plunge Pool
BLUEHEAD SUCKER
SUB-ADULTS AND ADULTS
Flow<2,000 We
2 r=-0.59
n=14
2
2
Zout
2000
F 1500
3
0
LL 1000
500
0
Plunge Pool
FLANNELMOUTH SUCKER
SUB-ADULTS AND ADULTS
Flow<2,000 cfe
r=-0.03
n_ 14
2
2
2
2
2
42 e4 126
Total Catch Effort (Flsh/h)
2500
Plunge Pool
ROUNDTAIL CHUB
SUB-ADULTS AND ADULTS
2000 2
Flow<2,000 We
® ® r=0.04
n=14
F1500-
1000 2
2
500
2
2
2000
F150
u
3
0
u. 1000
500
0
47 94 0
141 iB8
IN I
as B9 118
Total Catch Effort (Fish/h)
i
Plunge Pool
COLORADO SQUAWFISH
SUB-ADULTS AND ADULTS
Flow<2,000 cfe
2 r=-0.57
n=14
0
2
2
i 16.5 22
Total Catch Effort (Fish/h) Total Catch Effort (Fish/h)
Figure E.1. Plot of total catch per unit effort (Fish/h) versus mean
daily discharge for sub-adult and adult bluehead sucker,
flannelmouth sucker, roundtail chub, and Colorado squawfish
collected in the plunge pool (RM 3.0) of the Redlands
Diversion Dam in the Lower Gunnison River, Colorado, March
1994 to November 1995. Note: 89-2,000 cfs was the range of
flows analyzed; goodness-of-fit line fitted by computer.
E-3