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Puget Sound Power & Light Company, White River Hydroelectric Project, 600 North River Avenue, Dieringer, Pierce County, WA

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, 600 North River Avenue, Dieringer, Pierce County, WA

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.

Nevada Test Site, Test Cell A Facility, Test Cell A Building & Addition, Area 25, Jackass Flats, Road F, Mercury, Nye County, NV

Nevada Test Site, Test Cell A Facility, Test Cell A Building & Additio...

Survey number: HAER NV-33-A Building/structure dates: 1958 Initial Construction

Nevada Test Site, Test Cell A Facility, Test Cell A Building & Addition, Area 25, Jackass Flats, Road F, Mercury, Nye County, NV

Nevada Test Site, Test Cell A Facility, Test Cell A Building & Additio...

Survey number: HAER NV-33-A Building/structure dates: 1958 Initial Construction

Olive Switching Station, 13355 San Fernando Road, Los Angeles, Los Angeles County, CA

Olive Switching Station, 13355 San Fernando Road, Los Angeles, Los Ang...

Significance: The Olive Switching Station is the oldest such facility of the Department of Water and Power (Department) of the City of Los Angeles. It was a key element of the initial power development along t... More

Olive Switching Station, 13355 San Fernando Road, Los Angeles, Los Angeles County, CA

Olive Switching Station, 13355 San Fernando Road, Los Angeles, Los Ang...

Significance: The Olive Switching Station is the oldest such facility of the Department of Water and Power (Department) of the City of Los Angeles. It was a key element of the initial power development along t... More

U.S. Veterans Hospital, Jefferson Barracks, Boiler House No. 2, Virginia Medical Center, Jefferson Barracks Division
1 Jefferson Barracks Drive, Saint Louis, Independent City, MO

U.S. Veterans Hospital, Jefferson Barracks, Boiler House No. 2, Virgin...

Significance: It was part of the early 1950s expansion of the U.S. Veterans Hospital, Jefferson Barracks, to accommodate veterans of WWII and the Korean War, and to convert the medical center into a specialized... More

Ames Hydroelectric Plant, Ames, San Miguel County, CO

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

Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento County, CA

Folsom Powerhouse, Adjacent to American River, Folsom, Sacramento Coun...

Picryl description: Public domain image of an industrial building, power plant, electric generator, 20th century architecture, free to use, no copyright restrictions.

Bishop Creek Hydroelectric System, Plant 2, Bishop Creek, Bishop, Inyo County, CA

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

Fitzsimons General Hospital, Guard House, Norteast Corner of East McCloskey Street & North Page Street, Aurora, Adams County, CO

Fitzsimons General Hospital, Guard House, Norteast Corner of East McCl...

Public domain photograph of a motel, camp, tourism, free to use, no copyright restrictions image - Picryl description

Portland General Electric Company, Powerhouse Extension, 1841 Southeast Water Street, Portland, Multnomah County, OR

Portland General Electric Company, Powerhouse Extension, 1841 Southeas...

Picryl description: Public domain image of an industrial building interior, power generator, furnace, boiler, 20th-century architecture, free to use, no copyright restrictions.

Yellow River Bridge, Spanning Chippewa River on County Trunk T, Arthur, Grant County, WI

Yellow River Bridge, Spanning Chippewa River on County Trunk T, Arthur...

Significance: The Modern Steel Structures Company of Waukesha constructed the Yellow River Bridge across the Chippewa River in 1908. The firm, incorporated in 1900, developed the most modern and complete steel... More

Bay City Traction & Electric Company, Power Station, 301 Washington Street, Bay City, Bay County, MI

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

Wilson Dam & Hydroelectric Plant, Three Phase Tri Level Circuit Breaker, Spanning Tennessee River at Wilson Dam Road (Route 133), Muscle Shoals, Colbert County, AL

Wilson Dam & Hydroelectric Plant, Three Phase Tri Level Circuit Breake...

Significance: In order to perform such functions as servicing, maintenance, re-configuring and fault protection, it is necessary that there be some means for disconnecting the load (electric furnaces, motors, e... More

Cove Hydroelectric Development, Screen House & Intake, Cove Power Plant Road, Grace, Caribou County, ID

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

Hoover Dam, Arizona-Nevada Switchyard, U.S. Highway 93, Boulder City, Clark County, NV

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

High Island Bridge Tender's Station, Power House, State Highway 124 Crossing of Mud Bayou, High Island, Galveston County, TX

High Island Bridge Tender's Station, Power House, State Highway 124 Cr...

Field notes with main record TX-3404. Significance: Designed by the Galveston District COE in 1933 in conjunction with planning efforts for the construction of the New Orleans, Louisiana to Corpus Christi, Texa... More

Oakland Naval Supply Center, Cafeteria-RepairShop-Storage Facility, West & North of Power Plant, Oakland, Alameda County, CA

Oakland Naval Supply Center, Cafeteria-RepairShop-Storage Facility, We...

Survey number: HABS CA-2614-JJ Building/structure dates: 1944 Initial Construction

Haddam Neck Nuclear Power Plant, Turbine Building , 362 Injun Hollow Road, Haddam, Middlesex County, CT

Haddam Neck Nuclear Power Plant, Turbine Building , 362 Injun Hollow R...

This documentation also includes the 345-kilovolt transformers and the Terry Turbine Building (HAER CT-185-E). Significance: The Haddam Neck Nuclear Power Plant was one of the earliest commercial scale nuclear ... More

American Falls Water, Power & Light Company, Island Power Plant, Snake River, below American Falls Dam, American Falls, Power County, ID

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 River, below American Falls Dam, American Falls, Power County, ID

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, Boulder City, Clark County, NV

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

Capital Traction Company Powerhouse, 3142 K Street Northwest, Washington, District of Columbia, DC

Capital Traction Company Powerhouse, 3142 K Street Northwest, Washingt...

Significance: The building housed the equipment which generate the electricity for Washington's transportation system from 1911 to 1943. It is superior industrial architecture, and an impressive landmark on th... More

Lee Vining Creek Hydroelectric System, Triplex Cottage, Lee Vining Creek, Lee Vining, Mono County, CA

Lee Vining Creek Hydroelectric System, Triplex Cottage, Lee Vining Cre...

Significance: The triplex cottage at Poole Powerhouse (Lee Vining No. 1) was designed by G. Stanley Wilson who is recognized as one of California's master architects during the 1920 and 1930s. Wilson was a lead... More

Lee Vining Creek Hydroelectric System, Triplex Cottage, Lee Vining Creek, Lee Vining, Mono County, CA

Lee Vining Creek Hydroelectric System, Triplex Cottage, Lee Vining Cre...

Significance: The triplex cottage at Poole Powerhouse (Lee Vining No. 1) was designed by G. Stanley Wilson who is recognized as one of California's master architects during the 1920 and 1930s. Wilson was a lead... More

Lafayette Street Railway Powerhouse, 2 South Street, Lafayette, Tippecanoe County, IN

Lafayette Street Railway Powerhouse, 2 South Street, Lafayette, Tippec...

Significance: The first electric street railway system was installed in Richmond, Virginia in 1887. Based on its success, the City of Lafayette, Indiana, authorized the Lafayette Street Railway Co. to convert ... More

Lafayette Street Railway Powerhouse, 2 South Street, Lafayette, Tippecanoe County, IN

Lafayette Street Railway Powerhouse, 2 South Street, Lafayette, Tippec...

Significance: The first electric street railway system was installed in Richmond, Virginia in 1887. Based on its success, the City of Lafayette, Indiana, authorized the Lafayette Street Railway Co. to convert ... More

Lafayette Street Railway Powerhouse, 2 South Street, Lafayette, Tippecanoe County, IN

Lafayette Street Railway Powerhouse, 2 South Street, Lafayette, Tippec...

Significance: The first electric street railway system was installed in Richmond, Virginia in 1887. Based on its success, the City of Lafayette, Indiana, authorized the Lafayette Street Railway Co. to convert ... More

Ricks Estate, Electric Power Generating Mill (Ruin), Stone Bridge Road, Hot Springs, Garland County, AR

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

Ricks Estate, Electric Power Generating Mill (Ruin), Stone Bridge Road, Hot Springs, Garland County, AR

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

Ricks Estate, Electric Power Generating Mill (Ruin), Stone Bridge Road, Hot Springs, Garland County, AR

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

Washington Water Power Company Post Falls Power Plant, Middle Channel Powerhouse & Dam, West of intersection of Spokane & Fourth Streets, Post Falls, Kootenai County, ID

Washington Water Power Company Post Falls Power Plant, Middle Channel ...

Significance: It is significant as the first power production and transmission facility constructed on the Spokane River outside Spokane. The historic property consists of the connected, but irregular shaped "o... More

Alcatraz, Power Plant, Alcatraz Island, San Francisco Bay, San Francisco, San Francisco County, CA

Alcatraz, Power Plant, Alcatraz Island, San Francisco Bay, San Francis...

Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.

Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Bluff, Tehama County, CA

Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Blu...

STORED OFF SITE AND ON SITE. mchr Significance: The Battle Creek hydroelectric system was a typical turn-of-the-century California hydroelectric system, characterized by high head plants, the use of the impulse... More

Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Bluff, Tehama County, CA

Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Blu...

STORED OFF SITE AND ON SITE. mchr Significance: The Battle Creek hydroelectric system was a typical turn-of-the-century California hydroelectric system, characterized by high head plants, the use of the impulse... More

Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Bluff, Tehama County, CA

Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Blu...

STORED OFF SITE AND ON SITE. mchr Significance: The Battle Creek hydroelectric system was a typical turn-of-the-century California hydroelectric system, characterized by high head plants, the use of the impulse... More

Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Bluff, Tehama County, CA

Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Blu...

STORED OFF SITE AND ON SITE. mchr Significance: The Battle Creek hydroelectric system was a typical turn-of-the-century California hydroelectric system, characterized by high head plants, the use of the impulse... More

Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Bluff, Tehama County, CA

Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Blu...

STORED OFF SITE AND ON SITE. mchr Significance: The Battle Creek hydroelectric system was a typical turn-of-the-century California hydroelectric system, characterized by high head plants, the use of the impulse... More

Telluride Power Company, Nunn Hydroelectric Plant, Southeast side of Provo River, 300 feet West of US Route 189, Orem, Utah County, UT

Telluride Power Company, Nunn Hydroelectric Plant, Southeast side of P...

Significance: This plant represents L.L. Nunn's first major hydroelectric generating facility outside of Colorado. At the time of completion (1898), it generated three-phase AC power at a pressure of 40,000 vo... More

Telluride Power Company, Nunn Hydroelectric Plant, Southeast side of Provo River, 300 feet West of US Route 189, Orem, Utah County, UT

Telluride Power Company, Nunn Hydroelectric Plant, Southeast side of P...

Significance: This plant represents L.L. Nunn's first major hydroelectric generating facility outside of Colorado. At the time of completion (1898), it generated three-phase AC power at a pressure of 40,000 vo... More

Enterprise Manufacturing Company, 1450 Greene Street, Augusta Canal, Augusta, Richmond County, GA

Enterprise Manufacturing Company, 1450 Greene Street, Augusta Canal, A...

Significance: The Granite Mill, built shortly after the completion of the original canal, is the oldest industrial building in Augusta. The later Enterprise Manufacturing Company was the first large-scale mill... More

Shoshone Falls Hydroelectric Project, Reservoir and Dam Complex, North Bank of Snake River, extreme Eastern end of the Shoshone Falls Hydroelectric Project, Tipperary Corner, Jerome County, ID

Shoshone Falls Hydroelectric Project, Reservoir and Dam Complex, North...

Significance: The reservoir and dam complex mark the capture point, the beginning, of the the entire Shoshone Falls hydroelectric system. The four dams of the dam complex impound water in the reservoir, allowin... More

Idaho National Engineering Laboratory, Test Area North, Scoville, Butte County, ID

Idaho National Engineering Laboratory, Test Area North, Scoville, Butt...

Significance: Test Area North (TAN) was a site of the Aircraft Nuclear Propulsion (ANP) Project of the U.S. Air Force and the Atomic Energy Commission. Its Cold War mission was to develop a turbojet bomber prop... More

Idaho National Engineering Laboratory, Test Area North, Scoville, Butte County, ID

Idaho National Engineering Laboratory, Test Area North, Scoville, Butt...

Significance: Test Area North (TAN) was a site of the Aircraft Nuclear Propulsion (ANP) Project of the U.S. Air Force and the Atomic Energy Commission. Its Cold War mission was to develop a turbojet bomber prop... More

Idaho National Engineering Laboratory, Test Area North, Scoville, Butte County, ID

Idaho National Engineering Laboratory, Test Area North, Scoville, Butt...

Significance: Test Area North (TAN) was a site of the Aircraft Nuclear Propulsion (ANP) Project of the U.S. Air Force and the Atomic Energy Commission. Its Cold War mission was to develop a turbojet bomber prop... More

Santa Ana River Hydroelectric System, SAR-1 Machine Shop, Redlands, San Bernardino County, CA

Santa Ana River Hydroelectric System, SAR-1 Machine Shop, Redlands, Sa...

Survey number: HAER CA-130-L Building/structure dates: 1898 Initial Construction Building/structure dates: 1905 Subsequent Work Building/structure dates: 1904 Subsequent Work

Shoshone Falls Hydroelectric Project, 1907 Powerhouse, North Bank of Snake River, at West end of penstock, Tipperary Corner, Jerome County, ID

Shoshone Falls Hydroelectric Project, 1907 Powerhouse, North Bank of S...

Significance: The powerhouse, with its two horizontal shaft systems, was the focal point of the first hydroelectric development at Shoshone Falls. In 1907, the powerhouse generated 500 kilowatts of power. With ... More

Croton Hydroelectric Plant, Spillway, Croton Dam Road at Muskegon River, Croton, Newaygo County, MI

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

Croton Hydroelectric Plant, Spillway, Croton Dam Road at Muskegon River, Croton, Newaygo County, MI

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

Georgetown Steam Plant, South Warsaw Street, King County Airport, Seattle, King County, WA

Georgetown Steam Plant, South Warsaw Street, King County Airport, Seat...

Significance: The Georgetown Steam Plant is an early reinforced concrete structure housing America's last operable examples of the "first generation" of large scale, vertical steam turbine electric generators. ... More

Georgetown Steam Plant, South Warsaw Street, King County Airport, Seattle, King County, WA

Georgetown Steam Plant, South Warsaw Street, King County Airport, Seat...

Significance: The Georgetown Steam Plant is an early reinforced concrete structure housing America's last operable examples of the "first generation" of large scale, vertical steam turbine electric generators. ... More

Georgetown Steam Plant, South Warsaw Street, King County Airport, Seattle, King County, WA

Georgetown Steam Plant, South Warsaw Street, King County Airport, Seat...

Significance: The Georgetown Steam Plant is an early reinforced concrete structure housing America's last operable examples of the "first generation" of large scale, vertical steam turbine electric generators. ... More

Georgetown Steam Plant, South Warsaw Street, King County Airport, Seattle, King County, WA

Georgetown Steam Plant, South Warsaw Street, King County Airport, Seat...

Significance: The Georgetown Steam Plant is an early reinforced concrete structure housing America's last operable examples of the "first generation" of large scale, vertical steam turbine electric generators. ... More

Georgetown Steam Plant, South Warsaw Street, King County Airport, Seattle, King County, WA

Georgetown Steam Plant, South Warsaw Street, King County Airport, Seat...

Significance: The Georgetown Steam Plant is an early reinforced concrete structure housing America's last operable examples of the "first generation" of large scale, vertical steam turbine electric generators. ... More

Grand Canyon Power Plant, Coconino, Coconino County, AZ

Grand Canyon Power Plant, Coconino, Coconino County, AZ

Survey number: HAER AZ-2 National Register of Historic Places NRIS Number: 87001411

Grand Canyon Power Plant, Coconino, Coconino County, AZ

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 93, Boulder City, Clark County, NV

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, Southern California Edison 138-KV Switchyard, U.S. Highway 93, Boulder City, Clark County, NV

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, Cable Hoist House, U.S. Highway 93, Boulder City, Clark County, NV

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, Cable Hoist House, U.S. Highway 93, Boulder City, Clark County, NV

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

Basseĭn, pitai︠u︡shchīĭ turbinu ėlektr. st. Po puti k vodopadu. [Gagry]

Basseĭn, pitai︠u︡shchīĭ turbinu ėlektr. st. Po puti k vodopadu. [Gagry...

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

Hoover Dam, Los Angeles Bureau of Power & Light Lines 1-3, U.S. Highway 93, Boulder City, Clark County, NV

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

Santa Ana River Hydroelectric System, Flumes & Tunnels below Sandbox, Redlands, San Bernardino County, CA

Santa Ana River Hydroelectric System, Flumes & Tunnels below Sandbox, ...

Survey number: HAER CA-130-G Building/structure dates: 1898 Initial Construction Building/structure dates: 1905 Subsequent Work Building/structure dates: 1904 Subsequent Work

Yosemite Hydroelectric Power Plant, Highways 120 & 140, Yosemite Village, Mariposa County, CA

Yosemite Hydroelectric Power Plant, Highways 120 & 140, Yosemite Villa...

Picryl description: Public domain image of a river or lake, forest, trees, water stream, free to use, no copyright restrictions.

Yosemite Hydroelectric Power Plant, Highways 120 & 140, Yosemite Village, Mariposa County, CA

Yosemite Hydroelectric Power Plant, Highways 120 & 140, Yosemite Villa...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

Yosemite Hydroelectric Power Plant, Highways 120 & 140, Yosemite Village, Mariposa County, CA

Yosemite Hydroelectric Power Plant, Highways 120 & 140, Yosemite Villa...

Picryl description: Public domain image of a power dam, cascade, free to use, no copyright restrictions.

U.S. Naval Base, Pearl Harbor, Power House, Near Seventh Street, between Avenues D & E, Pearl City, Honolulu County, HI

U.S. Naval Base, Pearl Harbor, Power House, Near Seventh Street, betwe...

Significance: It is a contributing element to the Pearl Harbor National Historic Landmark. Built in 1913, it is significant as one of the earliest structures of Pearl Harbor and as the original electrical power... More

Winehaven, Point Molate Naval Fuel Depot, Richmond, Contra Costa County, CA

Winehaven, Point Molate Naval Fuel Depot, Richmond, Contra Costa Count...

Significance: Winehaven, a complex of 35 buildings constructed between 1907 and 1919, is significant historically and architecturally in the areas of wine production and industrial design. During its 12-year o... More

Hoover Dam, Metropolitan Water District Switchyard, U.S. Highway 93, Boulder City, Clark County, NV

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, Boulder City, Clark County, NV

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, Boulder City, Clark County, NV

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 along Hauser Dam Road, Helena, Lewis and Clark County, MT

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 along Hauser Dam Road, Helena, Lewis and Clark County, MT

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

Skagit Power Development, Diablo Dam, On Skagit River, 6.9 miles upstream from Newhalem, Newhalem, Whatcom County, WA

Skagit Power Development, Diablo Dam, On Skagit River, 6.9 miles upstr...

Unprocessed Field note material exists for this structure: FN-7 Survey number: HAER WA-24-F Building/structure dates: 1930 Initial Construction

Skagit Power Development, Diablo Dam, On Skagit River, 6.9 miles upstream from Newhalem, Newhalem, Whatcom County, WA

Skagit Power Development, Diablo Dam, On Skagit River, 6.9 miles upstr...

Unprocessed Field note material exists for this structure: FN-7 Survey number: HAER WA-24-F Building/structure dates: 1930 Initial Construction

Portland General Electric Company, Station "L", 1841 Southeast Water Street, Portland, Multnomah County, OR

Portland General Electric Company, Station "L", 1841 Southeast Water S...

Significance: Station "L" is primarily a group of six structures designed and built by the Portland General Electric Company between 1910 and 1929. The Station represents the growth and the use of Portland Gen... More

Portland General Electric Company, Station "L", 1841 Southeast Water Street, Portland, Multnomah County, OR

Portland General Electric Company, Station "L", 1841 Southeast Water S...

Significance: Station "L" is primarily a group of six structures designed and built by the Portland General Electric Company between 1910 and 1929. The Station represents the growth and the use of Portland Gen... More

Portland General Electric Company, Station "L", 1841 Southeast Water Street, Portland, Multnomah County, OR

Portland General Electric Company, Station "L", 1841 Southeast Water S...

Significance: Station "L" is primarily a group of six structures designed and built by the Portland General Electric Company between 1910 and 1929. The Station represents the growth and the use of Portland Gen... More

Portland General Electric Company, Station "L", 1841 Southeast Water Street, Portland, Multnomah County, OR

Portland General Electric Company, Station "L", 1841 Southeast Water S...

Significance: Station "L" is primarily a group of six structures designed and built by the Portland General Electric Company between 1910 and 1929. The Station represents the growth and the use of Portland Gen... More

Portland General Electric Company, Station "L", 1841 Southeast Water Street, Portland, Multnomah County, OR

Portland General Electric Company, Station "L", 1841 Southeast Water S...

Significance: Station "L" is primarily a group of six structures designed and built by the Portland General Electric Company between 1910 and 1929. The Station represents the growth and the use of Portland Gen... More

Lockville Hydroelectric Plant, Deep River, 3.5 miles upstream from Haw River, Moncure, Chatham County, NC

Lockville Hydroelectric Plant, Deep River, 3.5 miles upstream from Haw...

Significance: The Lockville dam, canal, and powerhouse occupy a site which is closely associated with important events in the history of Chatham County and in the overall development of North Carolina. Lord Co... More

Lockville Hydroelectric Plant, Deep River, 3.5 miles upstream from Haw River, Moncure, Chatham County, NC

Lockville Hydroelectric Plant, Deep River, 3.5 miles upstream from Haw...

Significance: The Lockville dam, canal, and powerhouse occupy a site which is closely associated with important events in the history of Chatham County and in the overall development of North Carolina. Lord Co... More

Lockville Hydroelectric Plant, Deep River, 3.5 miles upstream from Haw River, Moncure, Chatham County, NC

Lockville Hydroelectric Plant, Deep River, 3.5 miles upstream from Haw...

Significance: The Lockville dam, canal, and powerhouse occupy a site which is closely associated with important events in the history of Chatham County and in the overall development of North Carolina. Lord Co... More

East Boston Steam Pump Station, 20 Addison Street, Boston, Suffolk County, MA

East Boston Steam Pump Station, 20 Addison Street, Boston, Suffolk Cou...

Significance: The East Boston Steam Pumping Station was constructed in 1894 and was one of three state-of-the-art pumping stations in the Metropolitan Sewerage System. The station is significant as one of the ... More

East Boston Steam Pump Station, 20 Addison Street, Boston, Suffolk County, MA

East Boston Steam Pump Station, 20 Addison Street, Boston, Suffolk Cou...

Significance: The East Boston Steam Pumping Station was constructed in 1894 and was one of three state-of-the-art pumping stations in the Metropolitan Sewerage System. The station is significant as one of the ... More

Wilson Dam & Hydroelectric Plant, Turbine & Generator Unit, Spanning Tennessee River at Wilson Dam Road (Route 133), Muscle Shoals, Colbert County, AL

Wilson Dam & Hydroelectric Plant, Turbine & Generator Unit, Spanning T...

Significance: At Wilson Dam, two manufacturers, Westinghouse and General Electric, each supplied 4 of the dam's first turbine and generator sets to the 18 unit-capacity powerhouse. Illustrated here is one of t... More

Croton Hydroelectric Plant, Powerhouse, Croton Dam Road at Muskegon River, Croton, Newaygo County, MI

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

Cohoes Company, Gate House No. 1, On Mohawk River, North end of Canal abutting East bank, Cohoes, Albany County, NY

Cohoes Company, Gate House No. 1, On Mohawk River, North end of Canal ...

Significance: In addition to its practical function as a gate house controlling the flow of water to the canal, the head gate house was conceived romantically as a Romanesque Revival, brick bastion at the head ... More

Cohoes Company, Gate House No. 1, On Mohawk River, North end of Canal abutting East bank, Cohoes, Albany County, NY

Cohoes Company, Gate House No. 1, On Mohawk River, North end of Canal ...

Significance: In addition to its practical function as a gate house controlling the flow of water to the canal, the head gate house was conceived romantically as a Romanesque Revival, brick bastion at the head ... More

Cohoes Company, Gate House No. 1, On Mohawk River, North end of Canal abutting East bank, Cohoes, Albany County, NY

Cohoes Company, Gate House No. 1, On Mohawk River, North end of Canal ...

Significance: In addition to its practical function as a gate house controlling the flow of water to the canal, the head gate house was conceived romantically as a Romanesque Revival, brick bastion at the head ... More

Travis Air Force Base, Base Communications, W Street, Armed Forces Special Weapons Project Q Area, Fairfield, Solano County, CA

Travis Air Force Base, Base Communications, W Street, Armed Forces Spe...

Significance: Building 912 is significant as a contributor to the AFSWP "Q" Area, also referred to as "Fairfield Air Force Station (AFS)," the "Air Materiel Command (AMC) West River Depot," and the "3083rd Air ... More

Santa Ana River Hydroelectric System, Santa Ana River Diversion Dam, Redlands, San Bernardino County, CA

Santa Ana River Hydroelectric System, Santa Ana River Diversion Dam, R...

Survey number: HAER CA-130-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1905 Subsequent Work Building/structure dates: 1904 Subsequent Work

Bishop Creek Hydroelectric System, Plant 4, Worker Cottage, Bishop Creek, Bishop, Inyo County, CA

Bishop Creek Hydroelectric System, Plant 4, Worker Cottage, Bishop Cre...

Significance: Building 105 Plant 4 (formerly Building No. 4, Plant 4), a small bungalow cottage, is a rare, surviving example of early worker's housing at the Bishop Creek Hydroelectric System. Built in 1905, ... More

Lake Lynn Hydroelectric Power House & Dam, Cheat River, Morgantown, Monongalia County, WV

Lake Lynn Hydroelectric Power House & Dam, Cheat River, Morgantown, Mo...

Significance: When built, the Lake Lynn power house and dam reflected the state of the art in American hydroelectric power technology and developed a very substantial portion of West Virginia's hydrologic resou... More

Lake Lynn Hydroelectric Power House & Dam, Cheat River, Morgantown, Monongalia County, WV

Lake Lynn Hydroelectric Power House & Dam, Cheat River, Morgantown, Mo...

Significance: When built, the Lake Lynn power house and dam reflected the state of the art in American hydroelectric power technology and developed a very substantial portion of West Virginia's hydrologic resou... More

Lake Lynn Hydroelectric Power House & Dam, Cheat River, Morgantown, Monongalia County, WV

Lake Lynn Hydroelectric Power House & Dam, Cheat River, Morgantown, Mo...

Significance: When built, the Lake Lynn power house and dam reflected the state of the art in American hydroelectric power technology and developed a very substantial portion of West Virginia's hydrologic resou... More

New York, New Haven & Hartford Railroad, Cos Cob Power Plant, Sound Shore Drive, Greenwich, Fairfield County, CT

New York, New Haven & Hartford Railroad, Cos Cob Power Plant, Sound Sh...

Significance: The electrification of the New Haven Railroad was an innovative technological venture. The pioneering engineers of Westinghouse and the New Haven Railroad created the first long distance railroad... More

New York, New Haven & Hartford Railroad, Cos Cob Power Plant, Sound Shore Drive, Greenwich, Fairfield County, CT

New York, New Haven & Hartford Railroad, Cos Cob Power Plant, Sound Sh...

Significance: The electrification of the New Haven Railroad was an innovative technological venture. The pioneering engineers of Westinghouse and the New Haven Railroad created the first long distance railroad... More

New York, New Haven & Hartford Railroad, Cos Cob Power Plant, Sound Shore Drive, Greenwich, Fairfield County, CT

New York, New Haven & Hartford Railroad, Cos Cob Power Plant, Sound Sh...

Significance: The electrification of the New Haven Railroad was an innovative technological venture. The pioneering engineers of Westinghouse and the New Haven Railroad created the first long distance railroad... More

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