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Creator
- United States. War Department 2
Topic
- Bodies of water 2
- River channels 2
- River engineering 2
- Rivers 2
- United States. Congress--Records and correspondence 2
- Canals 1
- Harbors 1
- Northwest, Pacific 1
- River surveys 1
- West (U.S.) 1
Region
- California >> United States 2
- Columbia River >> Douglas County >> Washington >> United States 2
- Oregon >> United States 2
- San Joaquin River >> Contra Costa County >> California >> United States 2
- Snake River >> Franklin County >> Washington >> United States 2
- Washington >> United States 2
- Willamette River >> Multnomah County >> Oregon >> United States 2
- San Diego River >> San Diego County >> California >> United States 1
- Umpqua River >> Douglas County >> Oregon >> United States 1