9463

• UCREFRP Catalog Number: 9463
• Author: Badame, P. V. and J. M. Hudson.
• Title: Reintroduction and Monitoring of Hatchery-reared Bonytail in the Colorado and Green Rivers; 1996-2001.
• USFW Year: 2001.
• USFW - Doc Type: 03-13,
• Copyright Material: NO

LIST OF FIGURES

Figure 1. Map of the upper Colorado River basin bonytail stocking locations and areas
monitored during 1996-2002 .. . . . . .. . .. . .. .. .. . . . . . . . . . . . .. . . . . . . . . . 38

Figure 2. Total length frequencies for 7,045 PIT-tagged bonytail stocked in the Colorado
River during 1996-1998 compared to total length frequencies, at the time of
stocking, for 61 recaptured bonytail in the Colorado River. . . . . . . . . . . . . . . . . 39

Figure 3. Colorado River mean daily flows and mean daily temperatures collected at
USGS gauging station 09163500 near the Utah-Colorado border, 1996-1998 . .40

Figure 4. Colorado River mean daily flows and mean daily temperatures collected at
USGS gauging station 09163500 near the Utah-Colorado border, 1999-2001 . .41

Figure 5. Green River mean daily flows and mean daily temperatures collected at USGS
gauging station 09315000 at the town of Green River, Utah, 1998-2000 . . . . . . 42

Figure 6. Green River mean daily flows and mean daily temperatures collected at USGS
gauging station 09315000 at the town of Green River, Utah, 2001 . . . . . . . . . . .43

Figure 7. Least squares regressions of electrofishing relative catch rates (RCR) and total
length (TL) at the time of stocking for bonytail recaptured in the Colorado and
Green rivers after 1-6 months at large . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Figure 8. Change in total length (TL) after 2-9 and 58-70 days at large for 38 individual
fish stocked in the Colorado River April 20, 1998 . . . . . . . . . . . . . . . . . . . . . . . 45

Figure 9. Change in total length after 2-20 days at large for 18 individual fish stocked
in the Colorado River October 18, 1996 ............................... 46

Figure 10. Percent frequency of all bonytail captures by river mile on the Green and

Colorado rivers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Figure 11. Distribution of bonytail captures in the Green River during the 2001
Colorado pikeminnow population estimate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Figure 12. Pre and post-stocking mean total length (TL) of recaptured bonytail versus
river mile location in the Green River, 2001 ............................49

Figure 13. Location and total length (TL) frequencies (%) for 12 bonytail recaptured
in the Green River, 2001 ...........................................50

v