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

Table D.2. (cont'd). Monthly sampling summary of sub-adult and adult Colorado squawfish captured and positively
sighted while electrofishing in the Redlands Diversion Dam plunge pool (river mile [RM]
3.0) and in the 2.2-mile reach of the Gunnison River immediately downstream between the
Redlands Diversion Dam plunge pool and Colorado River confluence, 1979-1995. Note: catch
effort is total catch per unit effort (total fish divided by total effort); ?=unknown as
to whether sampling was conducted during these months; NS=not sampled; NR=effort was not
recorded, thus unable to calculate total catch per unit of effort.
----------------------------------
Month
MAR APR MAY JUN JUL AUG SEP OCT NOV
No. Catch No. Catch No. Catch No. Catch No. Catch No. Catch No. Catch No. Catch No. Catch
Year of effort of effort of effort of effort of effort of effort of effort of effort of effort
Locale fish MOM fish fish h fish fish h fish fish h fish fish h fish fish h fish fish h fish fish h fish f( ish/h)
Monthly
Totals (1979-1995)
Pl. Pool
1
a
2 (2)
7 (12)
6 (7)
24 (30)
16 (21)
2 (9)
1 (1)
0 (0)
)
No. of fish 1 (
Effort (h) 2.34 4.03 5.43 5.03 3.40 6.72 7.56 3.44 1.75
Catch effort
(fish/h) 0.43
0.50
1.29
1.19
7.06
2.38
0.26
0.29
7
40.00
of trips 6 9 15
80
0 12
58
0 12
2.50 12
1.75 12
0.75 0.14 0
D Fish/trip 0.17 0.22 . .

N
2.2-mi
of fish 3 (3)
No
5 (5)
2 (4)
6 (7)
17 (18)
3 (3)
3 (3)
2 (2)
50
1 1 (1)

1
23
.
Effort (h) 5.05 6.34 3.91 4.52 5.23 4.89 2.78 . .
Catch effort
59
(fish/h) 0
0.79
0.51
1.33
3.25
0.61
.08
2.33
0.81
.
No. of trips 5 7 6
67
0 8
88
0 7
2.57
0.75 4
0.75
1.00
1.00
Fish/trip 0.60 0.71 . .
a Value in parenthesis represents the total number of all fish sighted and captured when the effort was not
recorded and was used to calculate fish/trip;_value not in parenthesis represents the total number of fish
sighted and captured only when effort was recorded and was used to calculate total catch effort.