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
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
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
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
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
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
Electron Hydroelectric Project, Along Puyallup River, Electron, Pierce...
Picryl description: Public domain image of railroad tracks, railway, train car, free to use, no copyright restrictions.
Electron Hydroelectric Project, Along Puyallup River, Electron, Pierce...
Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.
Electron Hydroelectric Project, Along Puyallup River, Electron, Pierce...
Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.
Electron Hydroelectric Project, Along Puyallup River, Electron, Pierce...
Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.
Electron Hydroelectric Project, Along Puyallup River, Electron, Pierce...
Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.
Electron Hydroelectric Project, Along Puyallup River, Electron, Pierce...
Public domain photograph of a mountain pass, mountains, nature, mountain range, view, landscape, rocks, free to use, no copyright restrictions - Picryl description
Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie...
Picryl description: Public domain image of a bridge, water, historic structure, free to use, no copyright restrictions.
Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie...
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie...
Public domain image of an arch structure, bridge, historic place ruins, classical architecture, free to use, no copyright restrictions - Picryl description
Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie...
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie...
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie...
Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.
Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie...
Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.
Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie...
Picryl description: Public domain image of a river, water stream, lake or pond, park or forest, natural landscape, free to use, no copyright restrictions.
Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie...
Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.
Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie...
Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.
Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie...
Picryl description: Public domain image of a river, water stream, lake or pond, park or forest, natural landscape, free to use, no copyright restrictions.
Michigan Lake Superior Power Company, Portage Street, Sault Ste. Marie...
Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.
Gregg Shoals Dam & Power Plant, Across Savannah River, Lowndesville, A...
Significance: The Gregg Shoals Dam and Power Plant began operations in May 1907 and produced electricity until September 1954. It was among the early low-head hydroelectric plants in America and is associated ... More
Gregg Shoals Dam & Power Plant, Across Savannah River, Lowndesville, A...
Significance: The Gregg Shoals Dam and Power Plant began operations in May 1907 and produced electricity until September 1954. It was among the early low-head hydroelectric plants in America and is associated ... More
Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...
Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More
Havre Rainbow Transmission Line, Havre City to Great Falls vicinity, M...
Significance: The Transmission Line is significant as a contributing element of the Fort Peck Town Site and Dam Multiple Resource Property. It maintains its integrity and is directly associated with the constru... More
Big Creek Hydroelectric System, Powerhouse 8, Operator Cottage, Big Cr...
Significance: Building 105, Powerhouse 8, is one of the few surviving examples of operator housing from the Big Creek System period of significance (1911-1929). Its significance derives from its contribution t... 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
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
Estate Whim, Overhead Crank Steam Engine & Cane Mill, Centerline Road,...
Survey number: HABS VI-49-C Public domain photograph of a monument, memorial, free to use, no copyright restrictions image - Picryl description
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
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
Hoover Dam, Static Towers & Lines, U.S. Highway 93, Boulder City, Clar...
Significance: It was constructed as an integral part of the control and protection system for the Hoover Dam switchyard complex, to protect the switchyards and transformer circuits from lightning strikes. Surv... More
Central Power Station, Puget Sound Naval Shipyard, Bremerton, Kitsap C...
Significance: The Central Power Station at Puget Sound Naval Shipyard was constructed in 1910 as the Shipyard's first Central Steam/Power Station. It was the principal power plant for the buildings and equipme... More
Central Power Station, Puget Sound Naval Shipyard, Bremerton, Kitsap C...
Significance: The Central Power Station at Puget Sound Naval Shipyard was constructed in 1910 as the Shipyard's first Central Steam/Power Station. It was the principal power plant for the buildings and equipme... 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
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
Croton Hydroelectric Plant, Croton Dam Road at Muskegon River, Croton,...
Significance: The Croton Hydroelectric Plant was one of the earliest large-scale hydroelectric generating plants in Michigan and was the site of major innovations in the transmission of high voltage electricity... More
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
Ryan Hydroelectric Facility, Ryan-to-Rainbow 100 kV Transmission Line,...
Significance: The transmission line is an early and well preserved example of an important innovation in electric power transmission line technology, the H-frame support structure. Comprised of two-wood poles c... More
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
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
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
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
Ames Hydroelectric Plant, Ames, San Miguel County, CO
Significance: In 1890-91 L.L. Nunn built the world's first single-phase AC power transmission system at Ames in order to power the nearby Gold King Mine's stamp mill. The plant operated under a head of 320 feet... More
Snoqualmie Falls Hydroelectric Project, Transformer House, .5 mile nor...
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
Snoqualmie Falls Hydroelectric Project, Transformer House, .5 mile nor...
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
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Public domain photograph - historical image of California, United States, free to use, no copyright restrictions image - Picryl description
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Public domain photograph - historical image of California, United States, free to use, no copyright restrictions image - Picryl description
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Public domain image of an arch structure, bridge, historic place ruins, classical architecture, free to use, no copyright restrictions - Picryl description
Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...
Public domain image of an arch structure, bridge, historic place ruins, classical architecture, free to use, no copyright restrictions - Picryl description
Bay City Traction & Electric Company, Power Station, 301 Washington St...
Significance: the Bay City Traction and Electric Power Company Power Station was constructed as a steam generating plant providing power for interurban electric traction transportation in Bay City. This buildin... More
Bay City Traction & Electric Company, Power Station, 301 Washington St...
Significance: the Bay City Traction and Electric Power Company Power Station was constructed as a steam generating plant providing power for interurban electric traction transportation in Bay City. This buildin... More
Bay City Traction & Electric Company, Power Station, 301 Washington St...
Significance: the Bay City Traction and Electric Power Company Power Station was constructed as a steam generating plant providing power for interurban electric traction transportation in Bay City. This buildin... 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
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
Ricks Estate, Electric Power Generating Mill (Ruin), Stone Bridge Road...
See also Ricks Estate, Stone Bridge, HABS No. AR-34-B; & Ricks Estate, Boathouse, HABS No. AR-34-C. For Hot Springs Bathhouses, see HABS Nos. AR-28 through AR-28-I, & the Pythian Bathhouse, HABS No. AR-29. Sur... More
Swan Falls Dam, Carpenter Shop, 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
Croton Hydroelectric Plant, Spillway, Croton Dam Road at Muskegon Rive...
Significance: The Croton Hydroelectric Plant spillway was a key design feature of this electrical generation complex, an important example of the work of William G. Fargo, a Jackson, Michigan civil engineer who... 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
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
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
Croton Hydroelectric Plant, Powerhouse, Croton Dam Road at Muskegon Ri...
Significance: The Croton Hydroelectric Plant powerhouse was designed by William G. Fargo, a Jackson, Michigan, civil engineer who specialized in the design of small and mid-sized hydroelectric plants in the Mid... 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
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
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
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