WSP01392

• File Number: 8240.200.10.B
• Description: UCRBRIP - Riverine Fish Flow Investigations
• Basin: Colorado Mainstem
• Date: 6/1/2000
• Author: CDOW
• Title: Riverine Fish Flow Investigations 2000
• Water Supply Pro - Doc Type: Publication

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Table A2. I: Number offish per species collected or observed during fall electrofishing at
the Sevens station in 1998 and 1999.

1998 Electrofishing
Species >15 cm <15 cm YOY TOTAL
Flannelmouth Sucker 1169 1 14 1184 33.2%
Bluehead Sucker 547 2 0 549 15.4%
Roundtail Chub 156 4 66 226 6.3%
Colo. Pikeminnow 3 0 0 3 0.1%
White sucker 292 8 34 334 9.4%
White X Flannelmouth 142 0 0 142 4.0%
White X Bluehead 11 0 0 11 0.3%
Channel Catfish 153 1 0 154 4.3%
Carp 77 1 0 78 2.2%
Smallmouth Bass 24 2 9 35 1.0%
Northern Pike 33 0 0 33 0.9%
White Crappie 7 9 3 19 0.5%
Mottled Sculpin 0 16 52 68 1.9%
Speckled Dace 0 15 510 525 14.7%
Sand Shiner 0 27 151 178 5.0%
Redside Shiner 0 2 22 24 0.7%
Fathead minnow 0 2 0.1%
Sample size 2614 88 861 3565
1999 Electrofishino
Species >15 cm < 15 cm YOY TOTAL
Flannelmouth Sucker 476 0 0 476 42.7%
Bluehead Sucker 187 0 0 187 16.8%
Roundtail Chub 39 0 0 39 3.5%
Colo. Pikeminnow 2 0 0 2 0.2%
White sucker 103 11 4 118 10.6%
White X Flannelmouth 46 0 0 46 4.1%
White X Bluehead 2 0 0 2 0.2%
Channel Catfish 75 0 0 75 6.7%
Carp 50 0 0 50 4.5%
Smallmouth Bass 22 13 11 46 4.1%
Northern Pike 19 0 0 19 1.7%
White Crappie 14 3 2 19 1.7%
Mottled Sculpin 0 0 0 0 0.0%
Speckled Dace 0 10 0 10 0.9%
Sand Shiner 0 27 0 27 2.4%
Total 1035 64 17 1116

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