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
Abbeville Hydroelectric Power Plant, State Highway 284 & County Road 7...
Significance: J. Roy Pennell acquired property and began construction of the multiple arch reinforced concrete dam in 1933. Pennell abandoned the project in 1935 and it was completed by the City of Abbeville w... More
Abbeville Hydroelectric Power Plant, State Highway 284 & County Road 7...
Significance: J. Roy Pennell acquired property and began construction of the multiple arch reinforced concrete dam in 1933. Pennell abandoned the project in 1935 and it was completed by the City of Abbeville w... More
Abbeville Hydroelectric Power Plant, State Highway 284 & County Road 7...
Significance: J. Roy Pennell acquired property and began construction of the multiple arch reinforced concrete dam in 1933. Pennell abandoned the project in 1935 and it was completed by the City of Abbeville w... More
Abbeville Hydroelectric Power Plant, State Highway 284 & County Road 7...
Significance: J. Roy Pennell acquired property and began construction of the multiple arch reinforced concrete dam in 1933. Pennell abandoned the project in 1935 and it was completed by the City of Abbeville w... More
Charlestown Navy Yard, Central Power Plant, Attached to northeast end ...
The Boston Redevelopment Authority hired William A. Owens to document all buildings in the Charlestown Navy Yard in 1977, most of which were exterior photographs. Significance: Building 108 was originally buil... More
Snoqualmie Falls Hydroelectric Project, Elevator House, .5 mile north ...
Significance: Construction of the Snoqualmie Falls Hydroelectric Project began in 1898 near the falls of the falls of the Snoqualmie River. It was the first power plant successfully constructed completely under... More
Swan Falls Dam, Restroom, Snake River, Kuna, Ada County, ID
For written descriptive information, see narrative report on Swan Falls Dam, HAER ID-20. Significance: Swan Falls Dam was the first hydroelectric dam on Snake River in Idaho, and one of the earliest built in th... More
Columbia Canal & Power Plant, Waterfront of Broad River, Columbia, Ric...
Significance: Designed to enable the navigation of the Broad and Congaree Rivers at their confluence in Columbia, the canal was completed in 1824 and enlarged in 1891; the 1891 portion of the canal is the signi... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
Ellsworth Air Force Base, Rushmore Air Force Station, Steam Plant Buil...
This structure was demolished in 1996. Significance: The Rushmore Air Force Station Steam Plant Building is significant for its association with American Military policy during the Cold War years of the early 1... More
Ellsworth Air Force Base, Rushmore Air Force Station, Steam Plant Buil...
This structure was demolished in 1996. Significance: The Rushmore Air Force Station Steam Plant Building is significant for its association with American Military policy during the Cold War years of the early 1... More
Big Creek Hydroelectric System, Big Creek Town, Operator House, Orchar...
Significance: Operator house (building 105) was one of four operator houses built in Cascada (later Big Creek) adjacent to Powerhouse No. 1 in 1912-1913. These were the first permanent operator houses in the B... More
Naval Air Station Fallon, Power Plant, 800 Complex, off Carson Road ne...
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
Snoqualmie Falls Hydroelectric Project, .5 mile north of Snoqualmie, S...
Significance: The Snoqualmie Falls Hydroelectric Project was completed in 1898 and includes a cavity generating station, constructed some 250 feet below the surface of the river and about 300 feet from the edge... More
Fitzsimons General Hospital, Power House, Northwest Corner of East Har...
Survey number: HABS CO-172-AR Public domain photograph of hospital building, free to use, no copyright restrictions image - Picryl description
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Picryl description: Public domain image of a park, trees, outdoors, free to use, no copyright restrictions.
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Public domain photograph of industrial design, equipment, free to use, no copyright restrictions image - Picryl description
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Picryl description: Public domain image of an industrial building interior, power generator, furnace, boiler, 20th-century architecture, free to use, no copyright restrictions.
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Picryl description: Public domain image of a quarry, excavation or mining site, free to use, no copyright restrictions.
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
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
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
National Park Seminary, Service Buildings, Between Linden Lane & Beach...
Significance: The service buildings were essential for the operations of the school. Some of them, including the power plant and fire house, still are. Even though the buildings were utilitarian in function, ... More
National Park Seminary, Service Buildings, Between Linden Lane & Beach...
Significance: The service buildings were essential for the operations of the school. Some of them, including the power plant and fire house, still are. Even though the buildings were utilitarian in function, ... More
National Park Seminary, Service Buildings, Between Linden Lane & Beach...
Significance: The service buildings were essential for the operations of the school. Some of them, including the power plant and fire house, still are. Even though the buildings were utilitarian in function, ... More
National Park Seminary, Service Buildings, Between Linden Lane & Beach...
Significance: The service buildings were essential for the operations of the school. Some of them, including the power plant and fire house, still are. Even though the buildings were utilitarian in function, ... 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
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
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
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
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
Grand Canyon Power Plant, Coconino, Coconino County, AZ
Survey number: HAER AZ-2 National Register of Historic Places NRIS Number: 87001411
Hoover Dam, Southern California Edison 138-KV Switchyard, U.S. Highway...
Significance: It was the second of six major Federal switchyards built at Hoover Dam. The switchyard was built to replace the Southern Sierras Power Company substation that had provided electricity for construc... More
Hoover Dam, Kingman Switchyard, U.S. Highway 93, Boulder City, Clark C...
Significance: It was constructed in 1938 to provide Hoover Dam electricity to Kingman and surrounding areas of Arizona. This is the only switchyard built entirely by a utility, rather than the Bureau of Reclama... More
Hoover Dam, Los Angeles Bureau of Power & Light Lines 1-3, U.S. Highwa...
Significance: The transmission lines included pioneering technology in high-voltage transmission. The lines were crucial elements of the Hoover Dam electrical complex, particularly in the role played by Hoover ... More
Georgia Power Atlanta Division Building, 143 Alabama Street, Atlanta, ...
Significance: This Art Moderne six story Flemish bond brick, marble, and limestone building features a flat roof, rounded corners, and horizontal bands of windows. The building was known as the Atlanta Constit... More
Triangle Building, 1333 Warren Avenue & 1300 Broadway, Columbus, Musco...
Significance: Architecture: The only "flat-iron" building in Columbus, this structure uses the mansard-type tile roof reminiscent of Spanish Architecture. A modern building for the 1920s in Columbus, it uses ca... 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
Hauser Hydroelectric Facility, Powerhouse, East Bank of Missouri River...
Significance: The Hauser Hydroelectric Facility Historic District is significant for its association with the industrial development of Montana in the early twentieth century and the consolidation of most of th... More
Hauser Hydroelectric Facility, Powerhouse, East Bank of Missouri River...
Significance: The Hauser Hydroelectric Facility Historic District is significant for its association with the industrial development of Montana in the early twentieth century and the consolidation of most of th... More
Rush Creek Hydroelectric System, Worker Cottage, Rush Creek, June Lake...
Significance: Building 104 is one of the earliest Rush Creek worker cottages. Designed by the Riverside, California architect, W.C. Tanner, it combines Craftsman Bungalow and English Cottage styles. The Rush ... More
Swan Falls Dam, Blacksmith Shop & Annex, Snake River, Kuna, Ada County...
For written descriptive information, see narrative report on Swan Falls Dam, HAER ID-20. Significance: Swan Falls Dam was the first hydroelectric dam on Snake River in Idaho, and one of the earliest built in th... More
Columbus Railroad Company, Power Station, Eighteenth Street on Chattah...
Significance: This was the first central hydroelectric generating station in Columbus. From 1887-1906 it produced most of the electricity used for street, commercial and residential lighting, and for small pow... More
Milwaukee Light, Heat & Traction Company, 8336 West Lapham Street, Wes...
Significance: A turn of the century objective of The Milwaukee Electric Railway and Light Company, through its subsidiary The Milwaukee Light Heat and Traction Company, was to establish an interurban rail syste... More
Milwaukee Light, Heat & Traction Company, 8336 West Lapham Street, Wes...
Significance: A turn of the century objective of The Milwaukee Electric Railway and Light Company, through its subsidiary The Milwaukee Light Heat and Traction Company, was to establish an interurban rail syste... More
Milwaukee Light, Heat & Traction Company, 8336 West Lapham Street, Wes...
Significance: A turn of the century objective of The Milwaukee Electric Railway and Light Company, through its subsidiary The Milwaukee Light Heat and Traction Company, was to establish an interurban rail syste... More
Milwaukee Light, Heat & Traction Company, 8336 West Lapham Street, Wes...
Significance: A turn of the century objective of The Milwaukee Electric Railway and Light Company, through its subsidiary The Milwaukee Light Heat and Traction Company, was to establish an interurban rail syste... More
Milwaukee Light, Heat & Traction Company, 8336 West Lapham Street, Wes...
Significance: A turn of the century objective of The Milwaukee Electric Railway and Light Company, through its subsidiary The Milwaukee Light Heat and Traction Company, was to establish an interurban rail syste... More
Stanley R. Mickelsen Safeguard Complex, Perimeter Acquisition Radar Po...
Significance: The Perimeter Acquisition Radar Power Plant (PARPP) houses the power generator equipment, transformers, controls, and switch gear and provides electrical energy and other utilities to the PARB. S... More
Stanley R. Mickelsen Safeguard Complex, Perimeter Acquisition Radar Po...
Significance: The Perimeter Acquisition Radar Power Plant (PARPP) houses the power generator equipment, transformers, controls, and switch gear and provides electrical energy and other utilities to the PARB. S... More
Fair Lane, Powerhouse, 4901 Evergreen Road, Dearborn, Wayne County, MI
Public domain scan of architectural drawing, architecture, free to use, no copyright restrictions image - Picryl description
Hoover Dam, Hoover-Basic Magnesium North & South Lines, U.S. Highway 9...
Significance: The transmission lines served a vital function during WWII by providing electricity generated at Hoover Dam to the Basic Magnesium plant to the south of Las Vegas. After the war, these transmissio... More
Strawberry Valley Project, Payson, Utah County, UT
Significance: As the first project built by the U.S. Reclamation Service in Utah, the Strawberry Valley Project had a major impact on the State. It represents the beginning of Federal assistance in water devel... More
Strawberry Valley Project, Payson, Utah County, UT
Significance: As the first project built by the U.S. Reclamation Service in Utah, the Strawberry Valley Project had a major impact on the State. It represents the beginning of Federal assistance in water devel... More
Strawberry Valley Project, Payson, Utah County, UT
Significance: As the first project built by the U.S. Reclamation Service in Utah, the Strawberry Valley Project had a major impact on the State. It represents the beginning of Federal assistance in water devel... More
Strawberry Valley Project, Payson, Utah County, UT
Significance: As the first project built by the U.S. Reclamation Service in Utah, the Strawberry Valley Project had a major impact on the State. It represents the beginning of Federal assistance in water devel... More
Strawberry Valley Project, Payson, Utah County, UT
Significance: As the first project built by the U.S. Reclamation Service in Utah, the Strawberry Valley Project had a major impact on the State. It represents the beginning of Federal assistance in water devel... More
Roosevelt Power Canal & Diversion Dam, Parallels Salt River, Roosevelt...
Significance: The Roosevelt Power Canal was built as an integral part of the Salt River Project and represents the U. S. Reclamation Service's first involvement in the construction of hydroelectric power facili... More
Roosevelt Power Canal & Diversion Dam, Parallels Salt River, Roosevelt...
Significance: The Roosevelt Power Canal was built as an integral part of the Salt River Project and represents the U. S. Reclamation Service's first involvement in the construction of hydroelectric power facili... More
Rush Creek Hydroelectric System, Powerhouse Exciters, Rush Creek, June...
Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.
Rush Creek Hydroelectric System, Worker Cottage, Rush Creek, June Lake...
Significance: Building 103 is one of the earliest Rush Creek worker cottages. Designed by the Riverside, California architect, W.C. Tanner, it combines Craftsman Bungalow and English Cottage styles. The Rush ... More
Rush Creek Hydroelectric System, Worker Cottage, Rush Creek, June Lake...
Significance: Building 103 is one of the earliest Rush Creek worker cottages. Designed by the Riverside, California architect, W.C. Tanner, it combines Craftsman Bungalow and English Cottage styles. The Rush ... More
Kern County No. 1 Hydroelectric System, Powerhouse Exciters, Kern Rive...
Significance: The Kern River No. 1 powerhouse is equipped with two exciters (small electric generators) to provide direct field current to the four 5000 kv generators. The No. 1 exciter is original equipment d... More
Victoria Dam, West branch of Ontonagon River, 4.5 miles southwest of R...
Significance: The reinforced-concrete, multiple-arch buttressed dam was never a very common type in the United States, and it was particularly uncommon in the eastern half of the country. Very few dams of this ... More
Hoover Dam, Los Angeles Switch Yard, U.S. Highway 93, Boulder City, Cl...
Significance: It was the first and largest of the six major Federal switchyards at Hoover Dam. When the first stage of the switchyard began operations in 1936, it provided electricity at the highest voltages ev... More
Hoover Dam, Los Angeles Switch Yard, U.S. Highway 93, Boulder City, Cl...
Significance: It was the first and largest of the six major Federal switchyards at Hoover Dam. When the first stage of the switchyard began operations in 1936, it provided electricity at the highest voltages ev... More
Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricop...
Significance: It was the second dam constructed under the Salt River Project's hydroelectric expansion program in the 1920s. Survey number: HAER AZ-15 Building/structure dates: 1927 Initial Construction Nati... More
Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricop...
Significance: It was the second dam constructed under the Salt River Project's hydroelectric expansion program in the 1920s. Survey number: HAER AZ-15 Building/structure dates: 1927 Initial Construction Nati... More
Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricop...
Significance: It was the second dam constructed under the Salt River Project's hydroelectric expansion program in the 1920s. Survey number: HAER AZ-15 Building/structure dates: 1927 Initial Construction Nati... More
Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricop...
Significance: It was the second dam constructed under the Salt River Project's hydroelectric expansion program in the 1920s. Survey number: HAER AZ-15 Building/structure dates: 1927 Initial Construction Nati... More
Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricop...
Significance: It was the second dam constructed under the Salt River Project's hydroelectric expansion program in the 1920s. Survey number: HAER AZ-15 Building/structure dates: 1927 Initial Construction Nati... More
Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricop...
Significance: It was the second dam constructed under the Salt River Project's hydroelectric expansion program in the 1920s. Survey number: HAER AZ-15 Building/structure dates: 1927 Initial Construction Nati... More
Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricop...
Significance: It was the second dam constructed under the Salt River Project's hydroelectric expansion program in the 1920s. Survey number: HAER AZ-15 Building/structure dates: 1927 Initial Construction Nati... More
Horse Mesa Dam, Salt River, 65 miles East of Phoenix, Phoenix, Maricop...
Significance: It was the second dam constructed under the Salt River Project's hydroelectric expansion program in the 1920s. Survey number: HAER AZ-15 Building/structure dates: 1927 Initial Construction Nati... More
Rush Creek Hydroelectric System, Worker Cottage, Rush Creek, June Lake...
Significance: Building 105 is one of the earliest Rush Creek worker cottages. Designed by the Riverside, California architect, W.C. Tanner, it combines Craftsman Bungalow and English Cottage styles. The Rush ... More
Rush Creek Hydroelectric System, Worker Cottage, Rush Creek, June Lake...
Significance: Building 105 is one of the earliest Rush Creek worker cottages. Designed by the Riverside, California architect, W.C. Tanner, it combines Craftsman Bungalow and English Cottage styles. The Rush ... More
Hoover Dam, Metropolitan Water District Line 1, U.S. Highway 93, Bould...
Significance: The transmission line was a critical element of the Hoover Dam electrical generation and transmission system. The line provided Hoover Dam power for development of irrigation and municipal water d... More
Hoover Dam, Metropolitan Water District Line 1, U.S. Highway 93, Bould...
Significance: The transmission line was a critical element of the Hoover Dam electrical generation and transmission system. The line provided Hoover Dam power for development of irrigation and municipal water d... More
Bureau of Mines Metallurgical Research Laboratory, Original Building, ...
Significance: Building 200, as part of the Date Street Complex, was part of the Bureau of Mines Electrometallurgical Research Facility located in Boulder City. As such, it is within the designated Boulder City... More
Bonneville Power Administration Burley Substation, 1221 Albion Avenue,...
Significance: The Burley Substation is significant as a distribution component of the United States Reclamation Service's Minidoka Project, which pioneered agricultural development and the market for commercial... 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
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
Niantic River Swing Bridge, Spanning Niantic River between East Lyme &...
Significance: The Niantic River Bridge has two spans: a fixed Pratt through truss and the swing span which resembles a Warren through truss with verticals. All members and all connections are riveted. Survey ... More
Bonneville Power Administration South Bank Substation, I-84, South of ...
Significance: South Bank Substation was one of the first substations constructed by the Bonneville Power Administration. It is historically significant because it served to energize the BPA's first transmissio... More
Bonneville Power Administration South Bank Substation, I-84, South of ...
Significance: South Bank Substation was one of the first substations constructed by the Bonneville Power Administration. It is historically significant because it served to energize the BPA's first transmissio... More
Hardy Hydroelectric Plant, 6928 East Thirty-sixth Street, Newaygo, New...
Significance: Consumers Power Company built the Hardy Hydroelectric Plant in the early 1930s as a link in its system of electric power generation. In designing and building Hardy, the company found a way to ere... More