![]() ![]() Geophysical, Sedimentological, and Photographic Data from the John Day Reservoir, Washington and Oregon: Data Archive and Preliminary Discussion USGS Open-File 2004-1014
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Figure 7. The top of a bar shown in a pre-dam aerial photo-mosaic (A), also shows on the sidescan-sonar imagery (B). Click in figure for larger image. The top of a bar shown in a pre-dam aerial photo-mosaic (A), also shows on the sidescan-sonar imagery (B). The presence of roads and causeways on both images suggests there has been little change since the reservoir was filled. Location shown in Figure 3. |