8274

• UCREFRP Catalog Number: 8274
• Author: Pitlick, J. and R. Cress.
• Title: Longitudinal Trends in Channel Characteristics of the Colorado River and Implications for Food-Web Dynamics.
• USFW Year: 2000.
• USFW - Doc Type: Recovery Implementation Program Project 48-C,
• Copyright Material: NO

LIST OF FIGURES
Figure 1. Location map of study area and subreach boundaries ..............................................3
Figure 2. Snowmelt hydrographs of the Colorado River, 1995-1998 ......................................4
Figure 3. Average annual hydrographs of the Colorado River ................................................ 5
Figure 4. Digitized channel maps of a section of the Rifle-DeBeque reach .............................9
Figure 5. Suspended sediment data from the Glenwood Springs gauging station ................. I l
Figure 6. Relation between discharge and sediment load, Colorado River near Cameo......... 12
Figure 7. Relation between discharge and sediment load, Colorado-Utah State Line ............ 12
Figure 8. Relation between discharge and sediment load, Colorado River near Cisco ........... 13
Figure 9. Comparison between observed and predicted suspended sediment loads,
Colorado River near Cameo ............................................................................................. 14
Figure 10. Comparison between observed and predicted suspended sediment loads,
Colorado River near Colorado-Utah State Line ................................................................ 14
Figure 11. Comparison between observed and predicted suspended sediment loads,
Colorado River near Cisco, Utah ...................................................................................... 15
Figure 12. Changes in planform area of channel features in the Rifle-DeBeque reach .......... 20
Figure 13. Comparison between suspended sediment concentrations of samples from
the Colorado River near Cameo, CO, and the Colorado River near Cisco, UT .................. 23
Figure 14. Trends in annual discharge and sediment load at 4 sites along the
Colorado River ................................................................................................................. 24
Figure 15. Sand fraction of suspended sediment, Colorado River near Cisco, UT ................26
Figure 16. Longitudinal profile of the Colorado River from Rulison, CO, to Moab,
UT .................................................................................................................................... 27
Figure 17. Plots of channel gradient in specific subreaches of the Colorado River ...............28
Figure 18. Downstream trends in grain size of the Colorado River .......................................29
Figure 19. Selected cross sections of the Colorado River ..................................................... 30
Figure 20. Downstream trends in bankfull width and depth of the Colorado River ...............31
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