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LIST OF FIGURES Figure 1. Map showing location of study area ............................... A-31 Figure 2. Longitudinal profile of Desolation and Gray Canyons 3 showing geomorphic divisions of the canyons, and the location. of the study reaches ...................................................... A-32 Figure 3. Typical view of the alluvial valley in Desolation Canyon showing the active channel, the modern floodplain, a terrace, and a debris fan surface ...................................................... A-33 Figure 4. Example a habitat map, and how it is used in a Geographic Information System (GIS) ....................................... A-34 Figure 5. Cross-sectional view of the channel near river kilometer 282, showing annual scour and fill .:.................................. A-35 Figure 6. Plot showing relative abundance of different bank-materials occurring in the exposed portion of the active channel and the floodplain .......... A-36 Figure 7. Plot showing the distribution of vegetation onbank-material ............ A-37 Figure 8. Cross-sectional view of the channel near river kilometer 301, showing evidence of dunes at high discharges ....................... A-38 Figure 9. Cross-sectional view of the channel in acobble-bedded reach near river kilometer 259, showing agradation of the thalweg at high discharge .................................................... A-39 Figure 10. Photograph taken in 1922 by Ralph Wooley (a), and match taken in September, 5 1996 (b),showing an upstream view of Desolation Canyon near Dripping Springs, Rkm 292 ........................... A-40 Figure 11. Photograph taken in 1922 by Ralph Wooley (a), and match taken in .September, 8 1996 (b),showing an upstream view of Desolation Canyon near Joe Hutch Canyon, Rkm 259 .......................... A-41 Figure 12. Photograph taken in 1922 by Ralph Wooley (a), and match taken in September, 7 1996 (b),showing an upstream view of Desolation Canyon near Three Canyon Creek, Rkm 273 ........................ A-42 ~` ;_ s A-iv