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Subject
- Navigation improvements3,229
- Hydrographic surveying2,817
- Channels (Hydraulic engineering)2,708
- Cost2,147
- Rivers, creeks, streams, etc2,081
- Dredging1,670
- Harbors and ports1,335
- United States. War Dept. Engineer Dept609
- Dams556
- Locks (Hydraulic engineering)547
- Canals440
- Construction383
- Financial statements368
- Federal receipts and expenditures342
- Sand bars and shoals329
- Snags and snagging318
- Piers313
- United States. Army. Corps of Engineers283
- Water levels237
- Dikes (Engineering)235