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Creator
- United States. Army. Corps of Engineers 14
- United States. Agricultural Stabilization and Conservation Service 5
- WAC Corp. 4
- Smith, Katherine Louise 3
- United States. Army Map Service 3
- United States. Army. Office of the Chief of Engineers 3
- United States. Commodity Stabilization Service 3
- EROS Data Center 2
- Geological Survey (U.S.) 2
- United States. Forest Service 2
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Topic
- Bodies of water 53
- Northwest, Pacific 50
- Rivers 47
- Aerial photographs 40
- Dams 22
- Photography 8
- History 3
- Nature 3
- Riparian areas 3
- River engineering 3
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Region
- Oregon >> United States 53
- Columbia River >> Clatsop County >> Oregon >> United States 29
- Washington >> United States 23
- Columbia River >> Douglas County >> Washington >> United States 20
- Bonneville Dam >> Multnomah County >> Oregon >> United States 4
- Willamette River >> Multnomah County >> Oregon >> United States 2
- Big Eddy (historical) >> Wasco County >> Oregon >> United States 1
- British Columbia >> Canada 1
- Canoe Encampment Rapids (historical) >> Morrow County >> Oregon >> United States 1
- Celilo Falls (historical) >> Wasco County >> Oregon >> United States 1
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Format
- image/jpeg 53