9432 ‎(2)‎

• UCREFRP Catalog Number: 9432
• Author: Modde, T. and M. Fuller.
• Title: Feasibility of Channel Catfish Reduction in the Lower Yampa River.
• USFW Year: 2002.
• USFW - Doc Type: Vernal.
• Copyright Material: NO

Table 3. Comparison of the total volume (cfs and acre-feet) and mean flow
(cfs) of the Gunnison River measured at the Whitewater gage between
31 July and 9 October 1996-2000, and the total of four native
fishes, flannelmouth sucker (FM), bluehead sucker (BH), roundtail
chub (RT), Colorado pikeminnow (CS), and 12 nonnative fishes
collected in the fish trap of the Redlands Diversion Dam passageway
during the same time period. Note: designation/classification of
the water period (low, moderate, high) was the opinion of the author
and was determined relative to each of these five years, only).
31 July - 9 October
Number of Fish Collected
Total Volume Mean Daily Water Total of
cfs Flow Period 12
Year (acre-feet) cfs Classif. FM BH RT FM+BH+RT CS Nonnatives
1996 124,320 1,751 Low 1,090 1,276 208 2,782 1 122
(246,520)
1997 212,470 2,993 Moderate 1,492 497 322 2,311 18 250
(421,400)
1998 121,750 1,715 Low 201 750 104 1,055 23 160
(241,470)
1999 243,660 3,431 High 373 417 119 909 5 69
(483,390)
2000 126.340 1,779 Low 51 245 49 345 4 70
(250,590)
3,000
2,500
2,000
U.
w
0
1,500
E
31,000
500
0
1996 * r=0.01580
BH+FM+RT *1997
1998
1999
* 2000
00 y0 00 y0 00 y0 00 y0 00
e e ti ti e e e b h
Total Volume (acre-feet) X thousand
(31 July - 9 October 1996-2000)
25
3
0
c
20
N
Y_
Q
o15
V
C3
o`
0010
0
M 5
E
0
Z
0
1998* CS r=0.00953
1997
2000 * 1999*
1996
,`O O e ry0 O 'iy O e ,yh O e e e
Total Volume (acre-feet) X thousand
(31 July - 9 October 1996-2000)
Figure B. Relationship of the total number of three native fishes, bluehead
sucker, flannelmouth sucker, and roundtail chub (left) and the total
number of Colorado pikeminnow (right) collected in the fish trap of
the Redlands Dam passageway versus the total flow volume of the
Gunnison River measured at the Whitewater gage during the post-
runoff period, 31 July-9 October, 1996-2000. (refer to Table 3).
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