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Topic
- Rivers 39
- West (U.S.) 34
- Bodies of water 32
- Northwest, Pacific 29
- Canals--Design and construction--Costs 28
- Dams--Design and construction 28
- Transportation 28
- Water resources development 26
- River engineering 18
- United States--Appropriations and expenditures 12
- Rivers--Washington (State) 11
- River surveys 10
- Waterfalls 10
- United States. Congress--Records and correspondence 7
- Cowlitz River (Wash.) 4
- Fishers 4
- Fishing boats 4
- Fishing 4
- Government publications 4
- Harbors 4
