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U.S. Geological Survey
Open-File Report 03-265

Grand Canyon Riverbed Sediment Changes, Experimental Release of September 2000 - A Sample Data Set

Figure 7. Colorado riverbed after the September 2000 release. Same bottom types as for R3-00-GC overlaid on sidescan sonar image (r400bp1a.tif). The apparent spread of riverbed features beyond the shoreline is a result of the uncertain navigation data in parts of the canyon. Inset: Enlargement of a part of the R4-00-GC sidescan image with the boundaries of the interpreted polygons. Width of inset 100 m.

map of riverbed sediment after experimental flood

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