WSP12655

• File Number: 8220.101.10.B
• Description: Colorado River - Water Projects - Glen Canyon Dam-Lake Powell - Glen Canyon TWG
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 10/1/2004
• Author: Schmidt - Topping - Grams - Hazel
• Title: System-Wide Changes in the Distribution of Fine Sediment in the Colorado River Corridor Between Glen Canyon Dam and Bright Angel Creek - Arizona - Final Report - 10-01-04
• Water Supply Pro - Doc Type: Report/Study

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Map showing the 4 river segments that comprise the study area.... . . . . . . . . . . 2
Graphs showing instantaneous discharge of the Colorado River at .... . . . . . 4
Graph showing flow duration curves of the Colorado River at the Lees... . . . 5
Graph showing pre-dam sand concentrations as a function of water .... . . . . 5
Graph showing longitudinal profile of the Colorado River and reach.... . . .. . 9
Photographs of the Colorado River. .... . . . . . . . . . . . . . . . . . . . . . 9
Maps showing topography of the bed of the Colorado River... . . . . . . . . . 11
Maps showing the bed of the Colorado River near President Harding Rapid... . 12
Photographs of Badger Creek Rapids at River Mile 8.... . . . . . . . . . . 13
Map showing the distribution of unconsolidated geologic deposits .... . . . . . 14
Diagram showing the method of calculation ofEDZs. . . . . . . . . . . . . .. . 16
Graphs showing cumulative distribution ofEDZs in 5 study reache~... . . . . 18
Diagram depicting generalized cross section showing geomorphic... . . . .. . 19
Diagram depicting generaliz~d internal stratigraphy of Grand Canyon .... ., . 20
Photographs showing the Colorado River near the U. S. Geological Survey..... . 24
Graphs showing bed elevation at the Lees Ferry gage... . . . . . . . . . . . . . . . . 26
Graph showing mean bed elevation at the Grand Canyon gage... . . . . . .. . 27
Map showing Glen Canyon and locations of cross-sections that have been... . . 28
Graphs showing minimum bed elevation at cross-sections in Glen Canyon ... . . 30
Graph showing change in stage at 150 m3/s, plotted as a function of.... . . . . . . . 32
Graph showing bed sediment size distribution for samples in Glen Canyon..... . 32
Graph showing longitudinal profile of the thalweg and contact of sand and .... . . . 33
Photograph of the Marble Canyon dam site, near River Mile 39.. . . . . . . . . . . 33
Graph showing mean bed elevation and the discharge of water measured at... . . 35
Graphs showing (A) measured sediment volume in the 7 largest pools... . . . . . . 36
Graphs showing normalized sediment volume in 16 main channel pools... . . . . . . 36
Graph showing longitudinal profile of the water surface at Badger Creek..... . 37
Photographs showing Badger Creek Rapids. Photographs taken from river... . . 38
Photographs of Badger Creek Rapids, taken from the cliffs above the rapid... . . 40
Graphs showing the Colorado River upstream from Badger Creek Rapids... . . 43
Aerial photographs of Bader Creek Rapids. Flow is from right to left.... . ., . 44
Photographs of the separation bar on river left downstream from Badger..... . 46
Graph showing changes in topography of the separation bar on river left... . . 48
Graphs showing changes in the volume of sand on the separation bar on .... . 48
Photographs of the riffle and eddy at Eminence Break. Flow is from right .., . 50
Maps showing the area of the eddy and patterns of recirculating flow at .... ., 53
Maps showing changes in topography during the 1996 Controlled Flood... . . 55
Graphs showing topographic changes of the separation and reattachment... . . 56

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