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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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bullet OF 2004-1014

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    Discussion

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Figure 6A,B,C.  Alluvial fan shown on sidescan-sonar image, and the same feature on an aerial photo-mosaic of imagery collected prior to construction of the dam, and surface of this fan is gravel and cobbles covered by a fine sediment blanket. Figure 6A,B,C.  Alluvial fan shown on sidescan-sonar image, and the same feature on an aerial photo-mosaic of imagery collected prior to construction of the dam, and surface of this fan is gravel and cobbles covered by a fine sediment blanket.

Figure 6. Click in figure for larger image. Alluvial fan shown on the sidescan-sonar image (A), and the same feature on an aerial photo-mosaic of imagery collected prior to construction of the dam (B). Bottom photograph (C) shows that the surface of this fan is gravel and cobbles covered by a fine sediment blanket. Location shown in Figure 3.

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