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Creator
- United States. Army. Office of the Chief of Engineers 108
- Lorraine, Madison Johnson 100
- Fisk, W. L. (Walter Leslie), 1855- 75
- Harts, W. W. (William Wright), 1866-1961 75
- United States. Army. Corps of Engineers 7
- Smith, Katherine Louise 4
- United States. Agricultural Stabilization and Conservation Service 3
- EROS Data Center 2
- Geological Survey (U.S.) 2
- United States. Forest Service 2
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Topic
- Bodies of water 276
- Rivers 187
- Northwest, Pacific 170
- West (U.S.) 140
- Explorers 86
- River engineering 80
- Photography 75
- Discovery and exploration 58
- Railroad engineering 48
- Canada, Western 41
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Region
- Columbia River >> Clatsop County >> Oregon >> United States 276
- Willamette River >> Multnomah County >> Oregon >> United States 106
- Snake River >> British Columbia >> Canada 78
- Yamhill River >> Yamhill County >> Oregon >> United States 77
- Cascade Locks >> Hood River County >> Oregon >> United States 76
- Oregon >> United States 69
- Chehalis River >> Grays Harbor County >> Washington >> United States 27
- Cowlitz River >> Cowlitz County >> Washington >> United States 27
- Portland >> Clackamas County >> Oregon >> United States 27
- Snake River >> Franklin County >> Washington >> United States 25
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Type
- Text 207
- Image 62
- Collection 7
Format
- image/jpeg 230
- image/tiff 39
- application/xml 7
