Standard Oil Bulk Depot, West Shed, Along Burlington Northern Railroad...
Significance: Simply massed and detailed without any architectural style, the West Shed, like all of the site's structures, illustrates the utilitarianism of Wyoming industrial construction. Survey number: HAB... More
Hoover Dam, Lower Portal Access Road, U.S. Highway 93, Boulder City, C...
Significance: It was an important feature in the construction of Hoover Dam. The road provided access to the bottom of Black Canyon at a point about one mile downstream from the dam construction site. Here a co... More
Hoover Dam, Lower Portal Access Road, U.S. Highway 93, Boulder City, C...
Significance: It was an important feature in the construction of Hoover Dam. The road provided access to the bottom of Black Canyon at a point about one mile downstream from the dam construction site. Here a co... More
Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ
Significance: Bartlett Dam was the first multiple arch dam constructed by the Bureau of Reclamation. It was also the highest multiple arch dam constructed in the United States at the time of its completion. Su... More
Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ
Significance: Bartlett Dam was the first multiple arch dam constructed by the Bureau of Reclamation. It was also the highest multiple arch dam constructed in the United States at the time of its completion. Su... More
Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ
Significance: Bartlett Dam was the first multiple arch dam constructed by the Bureau of Reclamation. It was also the highest multiple arch dam constructed in the United States at the time of its completion. Su... More
Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ
Significance: Bartlett Dam was the first multiple arch dam constructed by the Bureau of Reclamation. It was also the highest multiple arch dam constructed in the United States at the time of its completion. Su... More
Salmon Creek Diversion Dam, Salmon Creek, Okanogan, Okanogan County, W...
Survey number: HAER WA-68 Building/structure dates: 1906 Initial Construction Building/structure dates: 1999 Subsequent Work
Hoover Dam, Henderson-Mead Transmission Line 2, Spanning Colorado Rive...
STORED OFF SITE AND ON SITE. mchr Significance: Previously known as a segment of the Davis-Hoover and the Hoover-Mead Transmission Lines, the documented segment of the Henderson-Mead Transmission Line 2 was con... More
Hoover Dam, Nevada Downstream Waste Tailings, Near the Lower Portal Tu...
Significance: They were an important feature in the construction of Hoover Dam. The tailings resulted from excavation of tunnels for diversion of the Colorado River, for penstock and spillway facilities, for lo... More
Hoover Dam, Nevada Downstream Waste Tailings, Near the Lower Portal Tu...
Significance: They were an important feature in the construction of Hoover Dam. The tailings resulted from excavation of tunnels for diversion of the Colorado River, for penstock and spillway facilities, for lo... More
Klamath Basin Project, "A" Canal Headworks House, 500 Nevada Street, K...
Significance: This house is among the first constructed by the Federal government in developing in the Klamath Basin Project. The A Canal and its headworks are the first Federal diversion from Upper Klamath Lak... More
Hoover Dam, Arizona-Nevada Switchyard, U.S. Highway 93, Boulder City, ...
Significance: It is one of six switchyards built between 1935 and 1952 to provide terminals for major transmission lines carrying electricity to markets in California, Nevada, and Arizona. All of these faciliti... More
American Falls Water, Power & Light Company, Island Power Plant, Snake...
Significance: This site represents technology associated with the first era of long distance electric power transmission in the state. It is also a representative example of an early low-head hydroelectric pow... More
American Falls Water, Power & Light Company, Island Power Plant, Snake...
Significance: This site represents technology associated with the first era of long distance electric power transmission in the state. It is also a representative example of an early low-head hydroelectric pow... More
Keechelus Dam, Spillway, Yakim River, 10 miles northwest of Easton, Ea...
Survey number: HAER WA-80-C Public domain photograph of electric power generation, power lines, free to use, no copyright restrictions image - Picryl description
Hoover Dam, Los Angeles Relay Control Building, U.S. Highway 93, Bould...
Significance: It was a critical element of the Hoover Dam electrical generation and transmission system. Although it was associated by name with the Los Angeles Bureau of Power and Light 387.5/275 switchyard, t... More
Wickiup Dam, Deschutes River, La Pine, Deschutes County, OR
Significance: Wickiup Dam and its related features are significant at the state level for their association with the development of the irrigated agricultural economy that strongly influenced the historic devel... More
Hoover Dam, Metropolitan Water District Switchyard, U.S. Highway 93, B...
Significance: It was the second-largest Federal switchyard at Hoover Dam, the switchyard provided needed power for expansion of irrigation and municipal water supplies in California during and after WWII, but i... More
Hoover Dam, Metropolitan Water District Switchyard, U.S. Highway 93, B...
Significance: It was the second-largest Federal switchyard at Hoover Dam, the switchyard provided needed power for expansion of irrigation and municipal water supplies in California during and after WWII, but i... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Hoover Dam, Southern California Edison 230-KV Switchyard, U.S. Highway...
Significance: It was an integral element of the Hoover Dam electrical generation and transmission system. This switchyard provided much-needed electricity during WWII to power Douglas, Vultee, and Northrup airc... More
Hoover Dam, Southern California Edison 230-KV Switchyard, U.S. Highway...
Significance: It was an integral element of the Hoover Dam electrical generation and transmission system. This switchyard provided much-needed electricity during WWII to power Douglas, Vultee, and Northrup airc... More
Hoover Dam, Southern California Edison 230-KV Switchyard, U.S. Highway...
Significance: It was an integral element of the Hoover Dam electrical generation and transmission system. This switchyard provided much-needed electricity during WWII to power Douglas, Vultee, and Northrup airc... More
Hoover Dam, U.S. Construction Railroad, U.S. Highway 93, Boulder City,...
Significance: The railroad was one of three railroads built and operated specifically to support construction of Hoover Dam and the power plant at the toe of the dam. Survey number: HAER NV-27-Q National Regi... More
Columbia Basin Project, Grand Coulee, Grant County, WA
The Columbia Basin Project is located in 5 counties: Ferry, Grant, Lincoln, Okanogan, and Stevens Survey number: HAER WA-139
Parker Dam, Spanning Colorado River between AZ & CA, Parker, La Paz Co...
Significance: It was constructed from 1934 to 1938 as the second impoundment of the lower Colorado River by the Bureau of Reclamation. Together with the Hoover Dam and Davis Dam, 155 miles upstream and 88 miles... More
Parker Dam, Spanning Colorado River between AZ & CA, Parker, La Paz Co...
Significance: It was constructed from 1934 to 1938 as the second impoundment of the lower Colorado River by the Bureau of Reclamation. Together with the Hoover Dam and Davis Dam, 155 miles upstream and 88 miles... More
Hoover Dam, Nevada Spoils Tunnel, Near the Lower Portal Tunnel Access ...
Significance: It was an important feature in the construction of Hoover Dam. The tunnel that was excavated to allow waste rock from Hoover Dam tunnels and other facilities to be deposited at the Nevada downstre... More
Keechelus Dam, Outlet Tower, Yakim River, 10 miles northwest of Easton...
Survey number: HAER WA-80-D Public domain photograph of electric power generation, power lines, free to use, no copyright restrictions image - Picryl description
Keechelus Dam, Outlet Tower, Yakim River, 10 miles northwest of Easton...
Survey number: HAER WA-80-D Public domain photograph - historical image of Washington State, United States, free to use, no copyright restrictions image - Picryl description
Keechelus Dam, Outlet Tower, Yakim River, 10 miles northwest of Easton...
Survey number: HAER WA-80-D Public domain scan of settlement or building architecture plan, free to use, no copyright restrictions image - Picryl description
Kachess Dam, Kachess River, 1.5 miles north of Interstate 90, Easton, ...
Significance: The dam and reservoir provide nearly a quarter of the water stored for the Yakima Project, which irrigates the Yakima Valley in central Washington. The valley, while blessed with a greater natural... More
Columbia Basin Project, Grand Coulee Dam & Franklin D. Roosevelt Lake,...
The Columbia Basin Project is located in 5 counties: Ferry, Grant, Lincoln, Okanogan, and Stevens Significance: At the time of construction, Grand Coulee Dam was the most massive structure ever built: construct... More
Columbia Basin Project, Grand Coulee Dam & Franklin D. Roosevelt Lake,...
The Columbia Basin Project is located in 5 counties: Ferry, Grant, Lincoln, Okanogan, and Stevens Significance: At the time of construction, Grand Coulee Dam was the most massive structure ever built: construct... More
Columbia Basin Project, Grand Coulee Dam & Franklin D. Roosevelt Lake,...
The Columbia Basin Project is located in 5 counties: Ferry, Grant, Lincoln, Okanogan, and Stevens Significance: At the time of construction, Grand Coulee Dam was the most massive structure ever built: construct... More
Columbia Basin Project, Grand Coulee Dam & Franklin D. Roosevelt Lake,...
The Columbia Basin Project is located in 5 counties: Ferry, Grant, Lincoln, Okanogan, and Stevens Significance: At the time of construction, Grand Coulee Dam was the most massive structure ever built: construct... More
Columbia Basin Project, Grand Coulee Dam & Franklin D. Roosevelt Lake,...
The Columbia Basin Project is located in 5 counties: Ferry, Grant, Lincoln, Okanogan, and Stevens Significance: At the time of construction, Grand Coulee Dam was the most massive structure ever built: construct... More
Hoover Dam, Circuits 1-15, U.S. Highway 93, Boulder City, Clark County...
Significance: Transformer Circuits are integral elements of the Hoover Dam electrical generation and transmission system. The circuits contributed to the importance of Hoover Dam power in the WWII and post-war ... More
Hoover Dam, Circuits 1-15, U.S. Highway 93, Boulder City, Clark County...
Significance: Transformer Circuits are integral elements of the Hoover Dam electrical generation and transmission system. The circuits contributed to the importance of Hoover Dam power in the WWII and post-war ... More
Hoover Dam, Circuits 1-15, U.S. Highway 93, Boulder City, Clark County...
Significance: Transformer Circuits are integral elements of the Hoover Dam electrical generation and transmission system. The circuits contributed to the importance of Hoover Dam power in the WWII and post-war ... More
Grand Valley Diversion Dam, Half a mile north of intersection of I-70 ...
Significance: Constructed between 1913 and 1916, the dam is the key structure of the Bureau of Reclamation's Grand Valley Project, which provides water to 42,000 acres of semi-arid land. At the time of its comp... More
Grand Valley Diversion Dam, Half a mile north of intersection of I-70 ...
Significance: Constructed between 1913 and 1916, the dam is the key structure of the Bureau of Reclamation's Grand Valley Project, which provides water to 42,000 acres of semi-arid land. At the time of its comp... More
Grand Valley Diversion Dam, Half a mile north of intersection of I-70 ...
Significance: Constructed between 1913 and 1916, the dam is the key structure of the Bureau of Reclamation's Grand Valley Project, which provides water to 42,000 acres of semi-arid land. At the time of its comp... More
Standard Oil Bulk Depot, East Shed, Along Burlington Northern Railroad...
Significance: Devoid of architectural style, with its simple massing and austere detailing, the East Shed, like all of the site's structures, illustrates the utilitarianism of Wyoming's industrial construction.... More
Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ
Significance: Bartlett Dam was the first multiple arch dam constructed by the Bureau of Reclamation. It was also the highest multiple arch dam constructed in the United States at the time of its completion. Su... More
Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ
Significance: Bartlett Dam was the first multiple arch dam constructed by the Bureau of Reclamation. It was also the highest multiple arch dam constructed in the United States at the time of its completion. Su... More
Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ
Significance: Bartlett Dam was the first multiple arch dam constructed by the Bureau of Reclamation. It was also the highest multiple arch dam constructed in the United States at the time of its completion. Su... More
Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ
Significance: Bartlett Dam was the first multiple arch dam constructed by the Bureau of Reclamation. It was also the highest multiple arch dam constructed in the United States at the time of its completion. Su... More
Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ
Significance: Bartlett Dam was the first multiple arch dam constructed by the Bureau of Reclamation. It was also the highest multiple arch dam constructed in the United States at the time of its completion. Su... More
Bartlett Dam, Verde River, Phoenix, Maricopa County, AZ
Significance: Bartlett Dam was the first multiple arch dam constructed by the Bureau of Reclamation. It was also the highest multiple arch dam constructed in the United States at the time of its completion. Su... More
Salmon Creek Diversion Dam, Salmon Creek, Okanogan, Okanogan County, W...
Survey number: HAER WA-68 Building/structure dates: 1906 Initial Construction Building/structure dates: 1999 Subsequent Work
Salmon Creek Diversion Dam, Salmon Creek, Okanogan, Okanogan County, W...
Survey number: HAER WA-68 Building/structure dates: 1906 Initial Construction Building/structure dates: 1999 Subsequent Work
Minidoka Relocation Center Warehouse, 111 South Fir Street, Shoshone, ...
Significance: This warehouse was one of six hundred buildings constructed at the Minidoka Relocation Camp for the internment of people of Japanese descent after the bombing of Pearl Harbor brought the United St... More
Keechelus Dam, Spillway, Yakim River, 10 miles northwest of Easton, Ea...
Survey number: HAER WA-80-C Public domain photograph - historical image of Washington State, United States, free to use, no copyright restrictions image - Picryl description
Klamath Basin Project, Lost River Diversion Dam House, Lost River near...
Significance: The dam serves as another important feature of the irrigation and economic development of Klamath Basin. This dam was necessary to help drain and reclaim Tule Lake and make it available for agricu... More
Wickiup Dam, Deschutes River, La Pine, Deschutes County, OR
Significance: Wickiup Dam and its related features are significant at the state level for their association with the development of the irrigated agricultural economy that strongly influenced the historic devel... More
Wickiup Dam, Deschutes River, La Pine, Deschutes County, OR
Significance: Wickiup Dam and its related features are significant at the state level for their association with the development of the irrigated agricultural economy that strongly influenced the historic devel... More
Hoover Dam, Cable Hoist House, U.S. Highway 93, Boulder City, Clark Co...
Significance: It provided access to control cable tunnels from the power plant to the switchyard relay house, and a transformer in the lower level of the hoist house provided operating electricity to the switch... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...
Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More
Hoover Dam, Southern California Edison 230-KV Switchyard, U.S. Highway...
Significance: It was an integral element of the Hoover Dam electrical generation and transmission system. This switchyard provided much-needed electricity during WWII to power Douglas, Vultee, and Northrup airc... More
Hoover Dam, Southern California Edison 230-KV Switchyard, U.S. Highway...
Significance: It was an integral element of the Hoover Dam electrical generation and transmission system. This switchyard provided much-needed electricity during WWII to power Douglas, Vultee, and Northrup airc... More
Davis Dam, Switchyards, Southeast of Davis Dam, Kingman, Mohave County...
Significance: Davis Dam is significant for its role in control of the lower Colorado River, fulfillment of obligations under the Mexican Treaty of 1944, and economic development of the Southwest after World War... More
Davis Dam, Switchyards, Southeast of Davis Dam, Kingman, Mohave County...
Significance: Davis Dam is significant for its role in control of the lower Colorado River, fulfillment of obligations under the Mexican Treaty of 1944, and economic development of the Southwest after World War... More
Davis Dam, Switchyards, Southeast of Davis Dam, Kingman, Mohave County...
Significance: Davis Dam is significant for its role in control of the lower Colorado River, fulfillment of obligations under the Mexican Treaty of 1944, and economic development of the Southwest after World War... More
Kachess Dam, Kachess River, 1.5 miles north of Interstate 90, Easton, ...
Significance: The dam and reservoir provide nearly a quarter of the water stored for the Yakima Project, which irrigates the Yakima Valley in central Washington. The valley, while blessed with a greater natural... More
Kachess Dam, Kachess River, 1.5 miles north of Interstate 90, Easton, ...
Significance: The dam and reservoir provide nearly a quarter of the water stored for the Yakima Project, which irrigates the Yakima Valley in central Washington. The valley, while blessed with a greater natural... More
Columbia Basin Project, Grand Coulee Dam & Franklin D. Roosevelt Lake,...
The Columbia Basin Project is located in 5 counties: Ferry, Grant, Lincoln, Okanogan, and Stevens Significance: At the time of construction, Grand Coulee Dam was the most massive structure ever built: construct... More
Columbia Basin Project, Grand Coulee Dam & Franklin D. Roosevelt Lake,...
The Columbia Basin Project is located in 5 counties: Ferry, Grant, Lincoln, Okanogan, and Stevens Significance: At the time of construction, Grand Coulee Dam was the most massive structure ever built: construct... More
Hoover Dam, Circuits 1-15, U.S. Highway 93, Boulder City, Clark County...
Significance: Transformer Circuits are integral elements of the Hoover Dam electrical generation and transmission system. The circuits contributed to the importance of Hoover Dam power in the WWII and post-war ... More
Hoover Dam, Circuits 1-15, U.S. Highway 93, Boulder City, Clark County...
Significance: Transformer Circuits are integral elements of the Hoover Dam electrical generation and transmission system. The circuits contributed to the importance of Hoover Dam power in the WWII and post-war ... More
Hoover Dam, Circuits 1-15, U.S. Highway 93, Boulder City, Clark County...
Significance: Transformer Circuits are integral elements of the Hoover Dam electrical generation and transmission system. The circuits contributed to the importance of Hoover Dam power in the WWII and post-war ... More
Grand Valley Diversion Dam, Half a mile north of intersection of I-70 ...
Significance: Constructed between 1913 and 1916, the dam is the key structure of the Bureau of Reclamation's Grand Valley Project, which provides water to 42,000 acres of semi-arid land. At the time of its comp... More