Grand Coulee Dam Powerhouse
Earl Roberge
Bonneville Dam
William H. Mullins
Glen Canyon Dam
Mark Newman
Glen Canyon Dam
Richard and Ellen Thane
Power Lines At The Hoover Dam
Mark Newman
Bonneville Dam
Science Source
Ice Harbor Dam, Washington
Earl Roberge
Grand Coulee Dam
Earl Roberge
Hoover Dam #2
William H. Mullins
Grand Coulee Dam #2
Earl Roberge
Hoover Dam
William H. Mullins
Swan Falls Dam
Betty B. Derig
Globe With Green And Polluting Ways
Ikon Images
Mcnary Dam
DOE/Science Source
Chief Joseph Dam #1
Earl Roberge
Brownlee Dam Reservoir
Theodore Clutter
Chief Joseph Dam
Earl Roberge
Oxbow Dam Reservoir
Theodore Clutter
Alternative Electricity Power Supplies
Ikon Ikon Images
Dworshak Dam
Theodore Clutter
Wells Dam, Washington
Earl Roberge
Hoover Dam #1
William H. Mullins