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- Bodies of water 2
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- Hydroelectric power plants 2
- Northwest, Pacific 2
- Wildlife conservation 2
- Agriculture 1
- Environmental impact analysis 1
- Flood control 1
- Hydraulic engineering 1
- Hydrothermal electric power systems 1
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- Irrigation 1
- Pumped storage power plants 1
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- Riparian areas 1
- Rivers 1
- Water resources development 1
- Water-power 1