Mitigation for the Construction and Operation of Libby Dam

Table 11. Percent composition of major fish species* caught in fall floating and spring sinking gillnets in Libby Reservoir, 1988
through 2003. Blank entries in table indicate either no fish were captured or that they occurred in very small proportions.
1988 1989 1990 1991 1992 1993 1994 1995 1996
Fall Spr. Fall Spr. Fall Spr. Fall Spr. Fall Spr. Fall Spr. Fall Spr. Fall Spr. Fall Spr.
RB 3.0 0.1 0.7 1.0 0.3 1.8 0.9 4.4 1.4
WCT 0.5 0.3 0.7 1.0 1.7 3.8 0.7 0.8 1.2
HB 1.0 0.3 1.1 0.5 0.7 0.2 0.0 0.3 0.2
ONC 4.5 0.7 0.7 0.4 2.4 0.1 2.4 0.4 2.7 0.1 5.8 0.3 1.7 0.2 5.5 0.4 2.8 1.0
MWF 0.5 1.6 0.2 0.8 0.9 0.2 1.4 0.7 0.7 0.6 1.4 0.2 2.2 0.3 2.1 1.7 1.4 1.5
CRC 39.4 63.8 70.5 66.0 71.4 82.6 50.0 76.5 72.6 81.7 72.8 73.9 54.3 77.0 8.6 62.9 66.5 56.9
NPM 2.9 7.7 4.1 7.4 7.2 4.8 5.8 5.0 5.6 2.9 9.3 5.0 17.5 6.2 19.6 9.3 10.2 8.7
RSS 0.8 0.2 0.2 0.1 0.0 0.0 0.3 0.0 0.0 0.3 0.0 0.0 1.5 0.0 1.3 0.0 0.6 0.0
FSU 0.0 2.3 0.0 1.6 0.0 1.5 0.0 2.6 0.1 2.0 0.0 5.2 0.0 5.3 0.0 3.5 0.0 4.4
CSU 0.0 12.7 0.2 10.3 0.2 4.5 0.3 5.9 0.0 8.8 0.6 9.7 0.6 7.3 0.0 13.9 2.4 18.6
KOK 47.3 1.7 23.4 2.1 15.5 1.5 37.3 1.6 15.7 0.3 4.4 3.4 20.6 0.2% 57.4 2.4 13.2 1.8
YP 5.5 9.4 3.7 5.2 1.2 1.1 0.9 2.9 3.4
BT 2.4 1.4 1.0 1.1 1.7 1.1 2.5 2.8 3.3
1997 1998 1999 2000 2001 2002 2003 Average
Fall Spr. Fall Spr. Fall Spr. Fall Spr. Fall Spr. Fall Spr. Fall Spr. Fall Spr.
RB 1.7 0.2 1.5 0.1 0.6 0.9 1.1 0.2 1.4 0.4 0.4 0.4 2.8 0.9 1.3 0.3
WCT 0.6 0.4 0.5 0.1 0.3 0.2 0.8 0.1 1.7 0 0.1 0 0.8 0.3 0.9 0.1
HB 0 0 2.3 0 0 0 0 0 0 0 0 0 0.4 0.0 0.4 0.0
ONC 2.3 0 4.2 0.4 0.9 1.3 1.9 0.3 3.1 0.4 0.5 0.4 4.0 1.2 2.6 0.4
MWF 2.4 1.9 1.2 2.5 0.6 1.1 0.5 0.7 2.5 0.6 0.3 1.5 2.0 1.6 1.1 1.1
CRC 56.0 33.8 50.2 33.0 44.6 38.3 46.4 66.0 49.3 42.2 41.5 62.4 27.7 54.9 49.6 54.1
NPM 18.0 20.0 21.1 17.6 22.5 20.8 18.1 10.8 22.5 18.6 14.4 11.8 18.6 16.9 12.4 10.5
RSS 3.5 0.2 0.8 1.4 0.7 0.1 0.1 0.4 1.4 0 0.9 0 0.4 0.1 0.8 0.2
FSU 0 7.2 0.3 12.1 0.1 8.7 0.1 4.0 0 1.9 0 3.4 0.4 3.0 0.0 4.0
CSU 3.38 20.8 4.6 24.1 3.3 13.7 4.0 9.1 3.4 24.0 0.6 12.3 1.2 13.3 1.5 12.7
KOK 14.4 2.2 17.3 1.8 27.1 8.1 28.6 0.9 17.5 0.4 41.6 1.2 41.1 1.6 23.9 1.8
YP 0 7.4 0 3.2 0.1 2.8 0.3 1.1 0 2.7 0.1 0.8 5.1 0.1 0.1 3.3
BT 0.1 5.1 0.3 3.3 0.1 2.6 0 5.8 0.3 9.2 0 5.9 0 7.0 0.1 3.3
*Species Codes = RB = Rainbow trout, WCT = westslope cutthroat trout, HB = hybrid rainbow trout X cutthroat trout, ONC= Combined Rainbow, westslope cutthroat and
hybrid trout, MWF = mountain whitefish, CRC = Columbia River chub (peamouth), NPM = northern pikeminnow, RSS = red side shiner, FSU = fine scale sucker, CSU =
course scale sucker, KOK = kokanee, YP = yellow perch, BT = bull trout.
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