Topics
Dams
7
Hydroelectric power plants
7
Research
7
Social aspects
7
Economic aspects
5
Power utilization
3
Recreational use
3
Aesthetic resources
2
Archaeological significance
2
Construction projects
2
Economic conditions
2
Economics
2
Human services
2
Public goods
2
Social conditions
2
Sociological aspects
2
Wilderness areas
2
Methodology
1
Recreational surveys
1
River surveys
1
Rivers
1