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- Navigation improvements[remove]4,429
- Channels (Hydraulic engineering)3,411
- Hydrographic surveying3,263
- Rivers, creeks, streams, etc2,439
- Cost2,415
- Dredging2,021
- Harbors and ports1,742
- Dams665
- Locks (Hydraulic engineering)663
- Canals535
- Construction478
- United States. War Dept. Engineer Dept447
- Sand bars and shoals366
- Snags and snagging359
- Piers352
- Financial statements351
- Federal receipts and expenditures318
- United States. Army. Corps of Engineers317
- Flood control261
- Water levels251