8159

• UCREFRP Catalog Number: 8159
• Author: Trammell, M. and T. Chart.
• Title: Aspinall Studies
• USFW Year: 1999.
• USFW - Doc Type: Annual Assessment of Colorado Pikeminnow Larval Production in the Colorado River, Utah 1992-1996 \
• Copyright Material: NO

LIST OF FIGURES
Figure 1. Map of study area, with locations of larval drift collections, Colorado River,
Utah and Colorado. Arrows indicate collection sites. Collection sites in
Colorado where Colorado pikeminnow were collected are shown for
comparison (Anderson 1999) ........................................ 26
Figure 2. Species composition and relative abundance of larval drift collections at
Westwater, Colorado River, 1992- 1996 ............................... 27
Figure 3. Species composition and relative abundance of larval drift collections at Moab,
Colorado River, 1992- 1996 ........................................ 28
Figure 4a. Daily Colorado pikeminnow larvae collections in fish/hour at Westwater (WW)
and Moab (MO) and flows at the Stateline and Cisco (USGS) gages, 1992....29
Figure 4b. Daily Colorado pikeminnow larvae collections in fish/hour at Westwater (WW)
and Moab (MO) and flows at the Stateline and Cisco (LJSGS) gages, 1993....30
Figure 4c. Daily Colorado pikeminnow larvae collections in fish/hour at Westwater (WV~
and Moab (MO) and flows at the Stateline and Cisco (USGS) gages, 1994....31
Figure 4d. Daily Colorado pikeminnow larvae collections in fish/hour at Westwater (WV~
and Moab (MO) and flows at the Stateline and Cisco (LJSGS} gages, 1995 .... 32
Figure 4e. Daily Colorado pikeminnow larvae collections in fish/hour at Westwater (WW)
and Moab (MO) and flows at the Stateline and Cisco (USGS) gages, 1996....33
Figure S. Length frequency histograms for larval Colorado pikenunnow, 1992-1996....34
Figure 6a. Larval pikeminnow collection and estimated spawning dates, Westwater and
Moab, 1992 .....................................................35
Figure 6b. Larval pikeminnow collection and estimated spawning dates, Westwater and
Moab, 1993 .....................................................36
Figure 6c. Larval pikeminnow collection and estimated spawning dates, Westwater and
Moab, 1994 .....................................................37
Figure 6d. Larval pikeminnow collection and estimated spawning dates, Westwater and
Moab, 1995 .....................................................38
Figure 6e. Larval pikeminnow collection and estimated spawning dates, Westwater and
Moab, 1996 .....................................................39
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