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

002335

Figure 17. Graph showing mean bed elevation at the Grand Canyon gage. A. entire period of record. B. post-dam
era. Mean bed elevation was calculated by dividing cross-section area by width. All elevations adjusted to that of the
lower gage. Arrows in B indicate times when configuration of Bright Angel Rapid changed due to debris flow or flash
flood.

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5.0 Changes in the Topography of the Main-Channel Sed 27