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Topic
- Rivers 32
- West (U.S.) 31
- Bodies of water 28
- Northwest, Pacific 26
- Canals--Design and construction--Costs 24
- Dams--Design and construction 24
- Transportation 24
- Water resources development 24
- River engineering 13
- United States--Appropriations and expenditures 8
- River surveys 7
- United States. Congress--Records and correspondence 5
- Cowlitz River (Wash.) 4
- Fishers 4
- Fishing boats 4
- Fishing 4
- River channels 4
- Fishing nets 3
- Government publications 3
- Harbors 3
