Topics
Hydroelectric power plants
Dams
29
Power utilization
15
Planning
12
Environmental aspects
9
Licenses
7
Research
7
Social aspects
6
Archaeological surveying
5
Design and construction
5
Antiquities
4
Archaeological significance
4
Estimates
4
Public opinion
4
Economic aspects
3
Historic sites
3
Water-power
3
Aesthetic resources
2
Archaeology
2
Cultural property
2
Evaluation
2
Indians of North America
2
Instream flow
2
Methodology
2
Natural resources surveys
2
Recreational use
2
Telephone surveys
2
Water use
2
Wilderness areas
2
Access roads
1
Archaeological geology
1
Construction projects
1
Geological surveys
1
Highway planning
1
Law and legislation
1
Paleontological excavations
1
Roads
1
Route surveying
1
Transportation
1
Wetlands
1