Mississippi River 9-Foot Channel, Lock & Dam No. 19, Upper Mississippi...
Significance: Rare, intact example of nationally significant historic engineering listed on the National Register of Historic Places as part of the Lock 19 National Register District. The U.S. Army Corps of ... More
Mississippi River 9-Foot Channel, Lock & Dam No. 19, Upper Mississippi...
Significance: Rare, intact example of nationally significant historic engineering listed on the National Register of Historic Places as part of the Lock 19 National Register District. The U.S. Army Corps of ... More
Mississippi River 9-Foot Channel, Lock & Dam No. 19, Upper Mississippi...
Significance: Rare, intact example of nationally significant historic engineering listed on the National Register of Historic Places as part of the Lock 19 National Register District. The U.S. Army Corps of ... More
Mississippi River 9-Foot Channel, Lock & Dam No. 19, Upper Mississippi...
Significance: Rare, intact example of nationally significant historic engineering listed on the National Register of Historic Places as part of the Lock 19 National Register District. The U.S. Army Corps of ... More
Cross Cut Hydro Plant, North Side of Salt River, Tempe, Maricopa Count...
Significance: This was the largest low-head hydro plant in the SRP system. From about 1915 to 1938, it represented a large percentage of the SRP generating capacity. Survey number: HAER AZ-30 Building/structu... More
Cross Cut Hydro Plant, North Side of Salt River, Tempe, Maricopa Count...
Significance: This was the largest low-head hydro plant in the SRP system. From about 1915 to 1938, it represented a large percentage of the SRP generating capacity. Survey number: HAER AZ-30 Building/structu... 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
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
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
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
Santa Ana River Hydroelectric System, SAR-3 Powerhouse, San Bernardino...
Survey number: HAER CA-130-W Building/structure dates: 1898 Initial Construction Building/structure dates: 1905 Subsequent Work Building/structure dates: 1904 Subsequent Work
Elwha River Hydroelectric System, Elwha Hydroelectric Dam & Plant, Por...
Unprocessed Field note material exists for this structure: N465 Survey number: HAER WA-130-A
Elwha River Hydroelectric System, Elwha Hydroelectric Dam & Plant, Por...
Unprocessed Field note material exists for this structure: N465 Survey number: HAER WA-130-A
Elwha River Hydroelectric System, Elwha Hydroelectric Dam & Plant, Por...
Unprocessed Field note material exists for this structure: N465 Survey number: HAER WA-130-A
Santa Ana River Hydroelectric System, Redlands, San Bernardino County,...
Public domain photograph of a mountain pass, mountains, nature, mountain range, view, landscape, rocks, free to use, no copyright restrictions - Picryl description
John P. King Manufacturing Company, 1701 Goodrich Street, Augusta Cana...
Significance: The John P. King Mfg. Co. was built as part of Augusta's campaign to become the "Lowell of the South." The mill has always used the water power of the Augusta Canal and now generates hydroelectri... More
Prado Dam, Spillway, Santa Ana River near junction of State Highways 7...
Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.
Upper Mississippi River 9-Foot Channel Project, Lock & Dam No. 5, Minn...
Significance: The Upper Mississippi River Lock and Dam Project represents one of the largest and most ambitious of such undertakings. With root in the Progressive Era, the project was adopted by New Deal propo... More
Hume Lake Dam, Sequioa National Forest, Hume, Fresno County, CA
Significance: Hume Lake Dam was the world's first reinforced a concrete multiple arch dam. Built to impound reservoir for the Hume-Bennett Lumber Company, today it is the only major surviving structure represe... More
Bishop Creek Hydroelectric System, Plant 6, Cashbaugh-Kilpatrick House...
Significance: Although greatly modified, the 19th Century Cashbaugh-era structures combined into Building 102 are reputed to be the oldest surviving houses in the Owens Valley. The Cashbaugh/Kilpatrick house's... More
Bishop Creek Hydroelectric System, Plant 6, Cashbaugh-Kilpatrick House...
Significance: Although greatly modified, the 19th Century Cashbaugh-era structures combined into Building 102 are reputed to be the oldest surviving houses in the Owens Valley. The Cashbaugh/Kilpatrick house's... More
Bishop Creek Hydroelectric System, Plant 6, Cashbaugh-Kilpatrick House...
Significance: Although greatly modified, the 19th Century Cashbaugh-era structures combined into Building 102 are reputed to be the oldest surviving houses in the Owens Valley. The Cashbaugh/Kilpatrick house's... More
Bishop Creek Hydroelectric System, Plant 6, Cashbaugh-Kilpatrick House...
Significance: Although greatly modified, the 19th Century Cashbaugh-era structures combined into Building 102 are reputed to be the oldest surviving houses in the Owens Valley. The Cashbaugh/Kilpatrick house's... More
Bishop Creek Hydroelectric System, Plant 6, Cashbaugh-Kilpatrick House...
Significance: Although greatly modified, the 19th Century Cashbaugh-era structures combined into Building 102 are reputed to be the oldest surviving houses in the Owens Valley. The Cashbaugh/Kilpatrick house's... More
Bishop Creek Hydroelectric System, Plant 6, Cashbaugh-Kilpatrick House...
Significance: Although greatly modified, the 19th Century Cashbaugh-era structures combined into Building 102 are reputed to be the oldest surviving houses in the Owens Valley. The Cashbaugh/Kilpatrick house's... More
Washington Water Power Company Monroe Street Plant, Units 4 & 5, South...
Significance: Installed in Washington Water Power Company's (WWPC) Monroe Street Plant in 1903, Generating Units 4 and 5 are believed to be the oldest turbine-generator units still operating in the State of Was... More
Santa Ana River Hydroelectric System, SAR-2 Powerhouse, Redlands, San ...
Survey number: HAER CA-130-Q Building/structure dates: 1898 Initial Construction Building/structure dates: 1905 Subsequent Work Building/structure dates: 1904 Subsequent Work
Santa Ana River Hydroelectric System, SAR-2 Powerhouse, Redlands, San ...
Survey number: HAER CA-130-Q Building/structure dates: 1898 Initial Construction Building/structure dates: 1905 Subsequent Work Building/structure dates: 1904 Subsequent Work
Santa Ana River Hydroelectric System, SAR-2 Powerhouse, Redlands, San ...
Survey number: HAER CA-130-Q Building/structure dates: 1898 Initial Construction Building/structure dates: 1905 Subsequent Work Building/structure dates: 1904 Subsequent Work
Boise Project, Boise River Diversion Dam, Across Boise River, Boise, A...
Significance: The Boise Diversion Dam and Powerplant are important components in the Boise Project, a Bureau of Reclamation effort to irrigate the Boise and Payette River valleys in Idaho. The diversion dam, co... More
Boise Project, Boise River Diversion Dam, Across Boise River, Boise, A...
Significance: The Boise Diversion Dam and Powerplant are important components in the Boise Project, a Bureau of Reclamation effort to irrigate the Boise and Payette River valleys in Idaho. The diversion dam, co... More
Bishop Creek Hydroelectric System, Plant 4, Worker Cottage, Bishop Cre...
Significance: Building 16, Plant 4 (formerly Building No. 7 Plant 4), a small Craftsman Style cottage, is the oldest permanently built residence at Plant 4. Its significance lies in its contribution to an unde... More
Skagit Power Development, Ross Powerhouse, On Skagit River, 10.7 miles...
Survey number: HAER WA-24-G Building/structure dates: HAER WA-24-G
Mountain Dell Dam, Parley's Canyon, Northwest side of I-80, West of St...
Significance: Mountain Dell Dam is an early application of multiple-arch reinforced-concrete construction to dam engineering. The design developed by John S. Eastwood consisted of a series of arches set at an a... More
Skagit Power Development, Skagit River & Newhalem Creek Hydroelectric...
Significance: Developed over a 50 year time span by Seattle City Light, the Skagit River Hydroelectric Project consists of three large dams and power plants: Gorge, Diablo, and Ross. Associated with it is the ... More
Skagit Power Development, Skagit River & Newhalem Creek Hydroelectric...
Significance: Developed over a 50 year time span by Seattle City Light, the Skagit River Hydroelectric Project consists of three large dams and power plants: Gorge, Diablo, and Ross. Associated with it is the ... More
Skagit Power Development, Skagit River & Newhalem Creek Hydroelectric...
Significance: Developed over a 50 year time span by Seattle City Light, the Skagit River Hydroelectric Project consists of three large dams and power plants: Gorge, Diablo, and Ross. Associated with it is the ... More
Rush Creek Hydroelectric System, Clubhouse Cottage, Rush Creek, June L...
Significance: Building 108 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, Clubhouse Cottage, Rush Creek, June L...
Significance: Building 108 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
Elwha River Hydroelectric System, Glines Hydroelectric Dam & Plant, Po...
Unprocessed Field note material exists for this structure: N466 Survey number: HAER WA-130-B
Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 25, ...
Significance: The Upper Mississippi River Nine-Foot Channel Project represents one of the largest and most ambitious river improvement projects ever constructed in the United States. The project's origins date... More
[Floodgates at dam facility] - Color separation negative, public domai...
Public domain historical photo, free to use, no copyright restrictions image - Picryl description
Reclamation built Lahontan Dam on the Newlands Project between 1911 an...
Illus. in: The Bureau of Reclamation : Origins and Growth to 1945, v. 1 / William D. Rowley. Denver, Colorado : U.S. Department of the Interior Bureau of Reclamation, 2006, p. 232 (4.29).
Wilson Dam, Aug. 15, 1927, Panoramic Photograph
J232104 U.S. Copyright Office Copyright deposit; George Lee Bracey; August 31, 1927. No. 21.
Construction workers using tools to settle freshly-poured concrete, Sh...
Title and other information from caption card. Transfer; United States. Office of War Information. Overseas Picture Division. Washington Division; 1944. More information about the FSA/OWI Collection is availabl... More
Construction workers on front porch of commissary, Shasta Dam. Shasta ...
Title and other information from caption card. Transfer; United States. Office of War Information. Overseas Picture Division. Washington Division; 1944. More information about the FSA/OWI Collection is availabl... More
Tennessee Valley Authority. The stator, rotor and exciter of a new gen...
Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.
Fort Loudon [i.e., Loudoun] Dam, Tennessee. Tennessee Valley Authority...
Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.
Fort Loudon [i.e., Loudoun] Dam, Tennessee. Tennessee Valley Authority...
Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.
Production. Steam power plant equipment. An electric arc-welder runs a...
Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.
Fort Loudon i.e., Loudoun Dam, Tennessee. Tennessee Valley Authority (...
Actual size of negative is C (approximately 4 x 5 inches). Title and other information from caption card. Transfer; United States. Office of War Information. Overseas Picture Division. Washington Division; 1944... More
Tennessee Valley Authority. Looking down the partly-finished generator...
Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.
Shoshone Falls Hydroelectric Project, Garage & Celler, North Bank of S...
Significance: It was the first building constructed in 1927 by the Idaho Power Company during its 1926-1927 expansion of the Shoshone Falls Hydroelectric Project. This stone building originally served as a gara... More
Aerial view of Hoover Dam, near Boulder City, Nevada
Digital image produced by Carol M. Highsmith to represent her original film transparency; some details may differ between the film and the digital images. Title, date, and keywords provided by the photographer.... More
Deer Creek Dam, Spanning the Provo River at the intersection of U.S. H...
Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.
Two of four 338-foot-high intake towers, the nearest of which showing ...
Called Boulder Dam from the date of its dedication in 1935, the concrete-arch dam was renamed after former U.S. president Herbert Hoover in 1947. Now a popular tourist attraction, the dam's generators provide p... More
Aerial view of a portion the water and surroundings of Lake Mead, crea...
The dam harnessed the Colorado River to create the widespread reservoir in the early 1930s. Lake Mead became the locus of a widespread national recreation area, popular with boaters and fishers. Title, date and... More
Shem Dam, Along Santa Clara River on west side of County Road 3184, 0....
Significance: Shem Dam was built in 1934–35 by the Civilian Conservation Corps (CCC) as a project sponsored by the U.S. Forest Service, Dixie National Forest. The dam was designed by two Utah engineers: Luther ... 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
Illinois Waterway, Starved Rock Lock and Dam , 950 North 27th Road, Ut...
Survey number: HAER IL-164-D National Register of Historic Places NRIS Number: 04000166
John Hollis Bankhead Lock & Dam, On Warrior River below Port Birmingha...
Significance: The original 1915 dame (tone only one of the original 17) remains, though not easily accessible to the general public. The current dam is 1,400 feet wide, 77 feet high with a lift of 69 feet. Th... More
Heber Light & Power Company, Hydroelectric Plant, U.S. Route 40/189, H...
Significance: Heber Light and Power Plant is representative of the large number of modest hydroelectric stations built during the first two decades of the twentieth century as a result of the growing demand for... More
Milltown Dam, Spillway, Clark Fork River, 6 miles upstream from Missou...
Survey number: HAER MT-43-B Building/structure dates: 1908 Initial Construction
Hardy Hydroelectric Plant, Intake Tower, 6928 East Thirty-sixth Street...
Significance: The tower is part of the Hardy Hydroelectric Plant, built in the early 1930s as a link in Consumers Power Company's system of electric power generation. In designing and building Hardy, the compan... 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
Dam No. 4 Hydroelectric Plant, Potomac River, Martinsburg, Berkeley Co...
Significance: Each plant epitomized the predominant low head hydroelectric technology in use at the time of its construction, Dam 4 uses tandem, multiple-runner, horizontal shaft turbines connected by rope driv... More
Dam No. 4 Hydroelectric Plant, Potomac River, Martinsburg, Berkeley Co...
Significance: Each plant epitomized the predominant low head hydroelectric technology in use at the time of its construction, Dam 4 uses tandem, multiple-runner, horizontal shaft turbines connected by rope driv... More
Wilson Dam & Hydroelectric Plant, Spanning Tennessee River at Wilson D...
Significance: In 1918, by the directive of the U.S. War Department, the Army Corps of Engineers began construction on Wilson Dam, a large hydroelectric project that was to supply power to U.S. Nitrate Plant No.... More
Wilson Dam & Hydroelectric Plant, Spanning Tennessee River at Wilson D...
Significance: In 1918, by the directive of the U.S. War Department, the Army Corps of Engineers began construction on Wilson Dam, a large hydroelectric project that was to supply power to U.S. Nitrate Plant No.... More
Wilson Dam & Hydroelectric Plant, Spanning Tennessee River at Wilson D...
Significance: In 1918, by the directive of the U.S. War Department, the Army Corps of Engineers began construction on Wilson Dam, a large hydroelectric project that was to supply power to U.S. Nitrate Plant No.... More
Wilson Dam & Hydroelectric Plant, Spanning Tennessee River at Wilson D...
Significance: In 1918, by the directive of the U.S. War Department, the Army Corps of Engineers began construction on Wilson Dam, a large hydroelectric project that was to supply power to U.S. Nitrate Plant No.... More
Wilson Dam & Hydroelectric Plant, Spanning Tennessee River at Wilson D...
Significance: In 1918, by the directive of the U.S. War Department, the Army Corps of Engineers began construction on Wilson Dam, a large hydroelectric project that was to supply power to U.S. Nitrate Plant No.... More
Hoover Dam, Spanning Colorado River at Route 93, Boulder City, Clark C...
Significance: It is a National Historic Landmark, an American Civil Engineering Landmark, and the focus of an historic district listed on the National Register of Historic Places. The dam was constructed betwee... More
Hoover Dam, Spanning Colorado River at Route 93, Boulder City, Clark C...
Significance: It is a National Historic Landmark, an American Civil Engineering Landmark, and the focus of an historic district listed on the National Register of Historic Places. The dam was constructed betwee... More
Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR
Significance: Owyhee Dam is a 417-foot-high, concrete thick-arch dam (or arch/gravity dam). At its completion in 1932, Owyhee was the tallest dam in the world, a short-lived distinction because it was superced... More
Cove Hydroelectric Development, Forebay & Diversion Dam, Cove Power Pl...
Significance: The forebay and diversion dam mark the capture point, the beginning, of the entire Cove system. The dam impounds water in the forebay, forcing it through the screen house and ultimately into the l... More
Skagit Power Development, Gorge High Dam, On Skagit River, 2.9 miles u...
Unprocessed Field note material exists for this structure: FN-5 Survey number: HAER WA-24-C Building/structure dates: 1961 Initial Construction
Skagit Power Development, Gorge High Dam, On Skagit River, 2.9 miles u...
Unprocessed Field note material exists for this structure: FN-5 Survey number: HAER WA-24-C Building/structure dates: 1961 Initial Construction
Cabot Station Electric Generating Plant, Gantry Crane, Montague City R...
Significance: The gantry crane is an integral part of Cabot Station, an early and substantial example of American hydroelectric engineering. When built, the plant as the largest hydroelectric facility in New E... 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
Puget Sound Power & Light Company, White River Hydroelectric Project, ...
Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.
Puget Sound Power & Light Company, White River Hydroelectric Project, ...
Picryl description: Public domain photo of a factory, warehouse, commercial or industrial building, free to use, no copyright restrictions image.
Puget Sound Power & Light Company, White River Hydroelectric Project, ...
Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.
Puget Sound Power & Light Company, White River Hydroelectric Project, ...
Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description
Puget Sound Power & Light Company, White River Hydroelectric Project, ...
Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.
Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...
Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More
Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania Count...
Significance: The dam and fish ladder were constructed by the CCC, Company 944 in 1935-36. The structure, a concrete arch dam, is believed to be one of the largest power generation plants constructed solely by ... More
Monongahela River Lock & Dam No. 7, River Mile No. 85, Greensboro, Gre...
Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; and HAER PA-304, Lower Monongahela River Public Impr... 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
Bishop Creek Hydroelectric System, Plant 2, Bishop Creek, Bishop, Inyo...
Survey number: HAER CA-145-2 Public domain photograph of electric power generation, power lines, free to use, no copyright restrictions image - Picryl description
Cove Hydroelectric Development, Screen House & Intake, Cove Power Plan...
Significance: The screen house represents an original component of the Cove Hydroelectric Development and the intake point for water flowing into the canal and flume system. The screens played an important role... More