Topics
Aesthetic resources
2
Archaeological significance
2
Dams
4
Economic aspects
2
Effect of dams on
1
Environmental aspects
1
Fishes
1
Hydroelectric power plants
Pacific salmon fishing
1
Power utilization
2
Rafting (Sports)
1
Recreational surveys
1
Recreational use
Research
3
River surveys
1
Rivers
1
Social aspects
3
White-water canoeing
1
Wilderness areas
2