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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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    Discussion

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Figure 13. High-resolution seismic-reflection profiles across an area where sidescan-sonar imagery and bottom photographs indicate sediment has accumulated since impoundment.

Figure 13. Click in figure for larger image. High-resolution seismic-reflection profiles across an area where sidescan-sonar imagery and bottom photographs indicate sediment has accumulated since impoundment. The fact that this deposit cannot be resolved on the seismic-reflection profiles indicates that the deposit is less than 25-50 cm thick. Location shown in Figure 3.

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