8160

• UCREFRP Catalog Number: 8160
• Author: Trammell, M. and T. Chart.
• Title: Aspinall Studies
• USFW Year: 1999.
• USFW - Doc Type: Evaluation of Nursery Habitat Availability and Colorado Pikeminnow Young of Year Habitat Use, in the Colorado River, Utah, 1992-1996\
• Copyright Material: NO

LIST OF FIGURES

Figure 1. Study area for the Aspinall Unit Colorado River nursery habitat, 1992-1996 .. 31
Figure 2. Hydrograph of the Colorado River, from the USGS gage #09180500, near
Cisco, Utah ......................................................32
Figure 3. Examples of Flooded Tributary (FT) and Horseshoe Vortex (HS) habitat types
encountered during the Aspinall Unit Project nursery habitat study, Colorado
River,1992-1996 .................................................33
Figure 4. Examples of Scour Channel (SC), Migratory Sandwave (MS), and Shoreline
Eddy (SE) habitat types encountered during the Aspinall Unit Project nursery
habitat study, Colorado River, 1992-1996 .............................. 34
Figure 5. Relationship of spring peak runoff flows with total habitat availability in
summer, fall and spring, upper and lower nursery habitat sections, Colorado
River, 1992-1995 .................................................35
Figure 6. Relationship of sampling flows with total habitat availability in summer, fall
and spring, upper and lower nursery habitat sections, Colorado River,
1992-995 .......................................................36
Figure 7. Relationship of sampling flows with total habitat area and habitat area in five
habitat types. Flooded Tributary (FT), Horseshoe vortex (HS), Migratory
Sandwave (MS), Scour Channel (SC) and Shoreline Eddy (SE). Upper and
lower nursery habitat sections, Colorado River, 1992-1995. Each sampling
occasion is represented by one sampling flow. Flows are sorted from lowest
to highest .......................................................37
Figure 8. Relationship of peak runoff flows to mean catch rate of Colorado pikeminnow
(CPE in #fish/100 m2) in summer, fall and spring. Upper and lower nursery
habitat sections, Colorado River, 1992-1996 ............................ 38
Figure 9. Relationship of sampling flows to mean catch rate of Colorado pikeminnow
(CPE in #fish/100 mZ) in summer, fall and spring. Upper and lower nursery
habitat sections, Colorado River, 1992-1996 ............................ 39
Figure 10. Relationship of total habitat area to mean catch rate of Colorado pikeminnow
(CPE in #fish/100 m2) in summer, fall and spring. Upper and lower nursery
habitat sections, Colorado River, 1992-1996 ............................ 40
~ Figure 11. Relationship of peak runoff flows to mean catch rate ofnon-native cyprinids
(CPE in #fish/100 m2) in summer, fall and spring. Upper and lower nursery
habitat sections, Colorado River, 1992-1996 ............................ 41

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