Subject
Water-supply
9
History
7
Water resources development
7
Water conservation
5
Water resources development History
5
Dams History
4
Water quality management
4
Water-supply Management
4
Hydroelectric power plants History
3
Irrigation History
3
Management
3
Reclamation of land History
3
Water-power History
3
Conservation of natural resources
2
Drought forecasting
2
Droughts
2
Irrigation
2
Reclamation of land
2
Russian olive
2
Saltcedar
2
Water conservation Government policy
2
Water rights
2
Watershed management
2
Appropriations and expenditures
1
Architecture, Modern
1
Buildings
1
Climatic changes Research
1
Climatic changes Research Planning
1
Colorado River (Colo.-Mexico)
1
Crops and water
1
Cultural property
1
Cultural property Protection
1
Dams
1
Data sets
1
Desert reclamation Environmental aspects
1
Earth dams
1
Electric power distribution
1
Electric power-plants
1
Fishing
1
Groundwater recharge
1
Hydroelectric power plants
1
Hydrologic models
1
Hydrological forecasting
1
Indians of North America Antiquities Collection and preservation
1
Interconnected electric utility systems
1
Invasive plants
1
Invasive plants Control
1
Irrigation Management
1
Irrigation laws
1
Irrigation projects
1
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