9299

• UCREFRP Catalog Number: 9299
• Author: Anderson, R. and J. Mumma.
• Title: Aspinall Studies
• USFW Year: 1999.
• USFW - Doc Type: Annual assessment of Colorado Pikeminnow Larval Production in the Gunnison and Colorado Rivers, Colorado 1992-1996.
• Copyright Material: NO

LIST OF FIGURES

1. Location of three sampling sites on the Colorado River and three sampling sites on the

Gunnison River. ........ ............................ . ........ ..... . . ....... . . .............. . .... '" .. . . ..... . ........ . . .. ............4

2. Hydrographs for 20%, 50% and 80% exceedence flows for the state-line gauge, Colorado

River (1952 to 1996) .... ..... ................................................................................. ...................5

3. Spring and summer flows for the Colorado River, state-line gauge during the study period.
Highest to lowest flow years are: 1995, 1993, 1996, 1994, 1992. .............................. ............6

Al.l. Estimated spawn date for pikeminnow larvae collected at Lorna, Colorado River with
daily flows for spawning period............................................................................................ 41

A2.1. Loma, 1992, daily estimates of hourly drift for native fish larvae.. ........................................43
A2. 2. Loma, 1992, daily estimates of hourly drift for nonnative fish larvae. ....................................4 3
A2.3. Loma, 1993, daily estimates of hourly drift for native fish larvae.. ........................................ 44
A2.4. Loma, 1993, daily estimates of hourly drift for nonnative fish larvae..................................... 44
A2.5. Loma, 1994, daily estimates of hourly drift for native fish larvae.. ........................................45
A2.6. Lorna, 1994, daily estimates of hourly drift for nonnative fish larvae.....................................45
A2. 7. Lorna, 1995, daily estimates of hourly drift for native fish larvae.. ........................................46
A2.8. Loma, 1995, daily estimates of hourly drift for nonnative fish larvae.....................................46
A2.9. Loma, 1996, daily estimates of hourly drift for native fish larvae.. ........................................47
A2.10. Loma, 1996, daily estimates of hourly drift for nonnative fish larvae.....................................47
A2.11. Middle Colorado, 1994, daily estimates of hourly drift for native fish larvae.. .......................48
A2.12. Middle Colorado, 1994, daily estimates of hourly drift for nonnative fish larvae. ..................48
A2.13. Middle Colorado, 1995, daily estimates of hourly drift for native fish larvae.. .......................49
A2.14. Middle Colorado, 1995, daily estimates of hourly drift for nonnative fish larvae. ..................49
A2.15. Middle Colorado, 1996, daily estimates of hourly drift for native fish larvae.. .......................50
A2.16. Middle Colorado, 1996, daily estimates of hourly drift for nonnative fish larvae. ..................50

A3.1 Runoff hydrograph (May 1 to August 15) for the Palisade gauge (I5-Mile reach),
Colorado River for the five study years................................ .... .................................. .......... 52

A3 .2 Runoff hydrograph (May 1 to August 15) for the Whitewater gauge, Gunnison River for

the five study years... ........................................................ ........... ................. .......................52

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