Elephant Butte Dam, NM (# 0827) Elephant Butte Dam, NM reservoir (# 0824) Elephant Butte Dam, NM (# 0830) Elephant Butte Dam, NM/Rio Grande (# 0831) Elephant Butte Dam, NM (# 0834) Curecanti Nat Rec Blue Mesa Dam (# 0239) Curecanti Nat Rec Morrow Point Dam (# 0209) Chattahoochee Jim Woodruff Dam and Lock (#0600) Chattahoochee Jim Woodruff Dam and Lock (Google) Chattahoochee Jim Woodruff Dam and Lock (#604) Chattahoochee Jim Woodruff Dam and Lock (#0601) Oroville Dam (1631) McNary Dam WA (#0406) Plymouth WA (#0411) Plymouth WA (#0410) John Day Columbia Aluminum (#0426) John Day dam (#0425) John Day dam fish ladder (#0350) John Day dam (#0349) John Day dam avian predation (#0346) John Day dam avian predation (#0347) John Day dam smolt chute (#0344) John Day dam (#0351) John Day dam (#0338) John Day dam (#0336) John Day dam (#0341) John Day dam (#0334) The Dalles Dam (#0327) The Dalles Bridge (#0328) The Dalles Dam (#0306) The Dalles Dam (#0309) The Dalles Dam (#0324) The Dalles Bridge (#0323) The Dalles Dam (#0320) The Dalles Bridge (#0319) Bonneville Dam (#0463) Bonneville Dam (#0454) Bonneville Dam (#0458) Bonneville Dam grammar (#0460) Bonneville Dam (#0462) Bonneville Dam (#0455) Bonneville Dam (#0456) Bonneville Dam (#0457) Bonneville Dam (#0459) Imperial Dam, Hidden Shores, AZ (# 0812) Imperial Dam, Senator Wash reservoir (#0821) Imperial Dam, Senator Wash (#0819) Imperial Dam, Hidden Shores, AZ (# 0818) Imperial Dam, Hidden Shores, AZ (# 0807) Hetch Hetchy canyon (#0642) Hetch Hetchy O'Shaugnessy Dam selfie (#0656) Hetch Hetchy O'Shaugnessy Dam selfie (#0654) Hetch Hetchy O'Shaugnessy Dam (#0636) Hetch Hetchy O'Shaugnessy Dam (#0635) Hetch Hetchy O'Shaugnessy Dam (#0646) Hetch Hetchy O'Shaugnessy Dam (#0645) Hetch Hetchy O'Shaugnessy Dam (#0649) Hetch Hetchy O'Shaugnessy Dam selfie (#0650) Hetch Hetchy O'Shaugnessy Dam (#0641) Hetch Hetchy O'Shaugnessy Dam (#0640) Hetch Hetchy O'Shaugnessy Dam (#0634) Hetch Hetchy O'Shaugnessy Dam (#0644) Hetch Hetchy O'Shaugnessy Dam (#0632) Hetch Hetchy O'Shaugnessy Dam (#0629) Flaming Gorge Dam UT (#0048) Flaming Gorge Dam UT (#0043) Great Falls MT Rainbow Falls Powerplant (#0417) Great Falls MT Rainbow Falls and Dam (#0416) Great Falls MT Black Eagle Falls Dam (#0406) Great Falls MT Black Eagle Falls Dam (#0399) Tempe Town Lake Pedestrian bridge & dam constructi… Tempe Town Lake Pedestrian bridge & dam constructi… Tempe Salt River (1898) Tempe Town Lake Pedestrian bridge, heron (1897)