9477

• UCREFRP Catalog Number: 9477
• Author: McAda, C. W.
• Title: Flow Recommendations to Benefit Endangere Fishes in the Colorado and Gunnison Rivers.
• USFW Year: 2003.
• USFW - Doc Type: Project number 54,
• Copyright Material: NO

LIST OF FIGURES (Continued)
Figure Page
2.10 Mean-daily river flow of the Gunnison River at three USGS gaging
stations, 1992-1998.. ..... .............. ...... ......... 2720
2.11 Mean-daily river flow of the Colorado River at the USGS gaging
station at the Colorado-Utah state line and the Gunnison River at the
USGS gaging station near Grand Junction, 1992-1998 . ................ 2-21
2.12
..
Longitudinal profile of the Gunnison and Colorado rivers ............ .
2-23
2.13 Average number and average. size of backwaters in 10-mi subreaches
of the two reaches sampled by autumn ISMP seining for YOY
Colorado pikeminnow........................................... 2-26
2.14 Relationships among backwater area, total number of backwaters, and
river flow in the Colorado River ....................... : .. . .. 2-28
2.15 Estimates of river flows that trigger initial motion, Q, and bankfull
flow Qb, at 54, cross sections on the Gunnison River . .................. 2-32
2.16 Cumulative percentage of 54 cross sections in the Gunnison River
reaching two threshold levels of particle motion - initial motion and
bankfull flow...... ... ... . ; . . ... ... .. . 2-32
2.17 Estimates of river flows that trigger initial motion Q, and bankfull
flow Qb, at 104 cross sections on the Colorado River downstream
from its confluence with the Gunnison River . ........................ 2-33
2.118 Cumulative percentage of 104 cross sections in the Colorado River
reaching two threshold levels of particle motion -- initial motion and
bankfull flow .................... ......................... . 2-34
2.19 Changes in the annual sediment transport capacity index for the
Gunnison River based on surface flushing criteria..................... 2-37
2.20 Changes in.the annual sediment transport capacity index for the
Gunnison River based on scouring gravel and sand from pools........... 2-37
2.21 Seasonal distribution of depth to embeddedness for riffles and runs in
the Colorado and Gunnison rivers..... .................. ..... 2-40
Final.Report X July 2003