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Dam, Red Cedar River near Mich. Agricultural College i.e. Michigan State University, East Lansing, Mich

Dam, Red Cedar River near Mich. Agricultural College i.e. Michigan Sta...

"H 51" and "036713" on negative. Detroit Publishing Co. no. 071451. Gift; State Historical Society of Colorado; 1949.

[Keene Valley, old mill on the Ausable, Adirondack Mts., N.Y.]

[Keene Valley, old mill on the Ausable, Adirondack Mts., N.Y.]

Picryl description: Public domain image of a rural landscape with a watermill, water, decayed building, 18th, 19th century architecture, free to use, no copyright restrictions.

[Floodgates at dam facility] - Color separation negative, public domain

[Floodgates at dam facility] - Color separation negative, public domai...

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

Sosnenskai︠a︡ melʹnit︠s︡a s plotinoĭ

Sosnenskai︠a︡ melʹnit︠s︡a s plotinoĭ

Picryl description: Public domain image of a rural landscape with water, building, 17th-18th century architecture, free to use, no copyright restrictions.

Zapruda na r. I︠U︡rezani. Buny - Color separation negative, public domain

Zapruda na r. I︠U︡rezani. Buny - Color separation negative, public dom...

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

Gatun Locks - emergency dams,  Panoramic Photograph

Gatun Locks - emergency dams, Panoramic Photograph

J188523 U.S. Copyright Office Copyright claimant's address: 143 Baronne St., New Orleans, La. No. 536. Copyright deposit; Gordon Panoramic Photo Co.; December 29, 1913.

Reclamation built Lahontan Dam on the Newlands Project between 1911 and 1915 - this is the left spillway overflowing

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).

Arrowrock Dam, Boise irrigation project

Arrowrock Dam, Boise irrigation project

Bain News Service photograph. No. 3656-14. George Grantham Bain Collection (Library of Congress).

Canadian scenes. Across channel to dam

Canadian scenes. Across channel to dam

Public domain image of an arch structure, bridge, historic place ruins, classical architecture, free to use, no copyright restrictions - Picryl description

Wilson Dam, Aug. 15, 1927,  Panoramic Photograph

Wilson Dam, Aug. 15, 1927, Panoramic Photograph

J232104 U.S. Copyright Office Copyright deposit; George Lee Bracey; August 31, 1927. No. 21.

Gully erosion controlled by check dams. Tuskegee Project, Macon County, Alabama

Gully erosion controlled by check dams. Tuskegee Project, Macon County...

Picryl description: Public domain image of field, irrigation, agriculture, water, free to use, no copyright restrictions.

The countryside near the TVA site of the Douglas Dam, Tenn.

The countryside near the TVA site of the Douglas Dam, Tenn.

Public domain photograph of Tennessee, United States, free to use, no copyright restrictions image - Picryl description

Shasta dam under construction, California

Shasta dam under construction, California

Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description

The countryside near the Tennessee Valley Authority dam site, Douglas Dam vicinity, Tenn.

The countryside near the Tennessee Valley Authority dam site, Douglas ...

Public domain photograph of mountain view, valley, mountain range, free to use, no copyright restrictions image - Picryl description

Section of one of the switchyards from which high tension lines carry current generated at TVA's Wilson Dam hydroelectric plant, Sheffield vicinity, Ala. Located 260 miles above the mouth of the Tennessee River, the dam has an authorized power installation of 288,000 kw., which can be increased to a possible ultimate of 444,000 kw. The reservoir at the dam adds 377,000 acre-feet of water to controlled storage on the Tennessee River system

Section of one of the switchyards from which high tension lines carry ...

12002-36. Transfer from U.S. Office of War Information, 1944. General information about the FSA/OWI Color Photographs is available at http://hdl.loc.gov/loc.pnp/pp.fsac Title from FSA or OWI agency caption. Add... More

Welder at work on Douglas Dam, Tenn. (TVA)

Welder at work on Douglas Dam, Tenn. (TVA)

Public domain photograph of Tennessee, United States, free to use, no copyright restrictions image - Picryl description

Shasta dam under construction, California

Shasta dam under construction, California

11671-31. Transfer from U.S. Office of War Information, 1944. General information about the FSA/OWI Color Photographs is available at http://hdl.loc.gov/loc.pnp/pp.fsac Title from FSA or OWI agency caption. Add... More

Generator works at the winding of a generator stator in a new addition to TVA's hydroelectric plant at Wilson Dam, Sheffield vicinity, Ala. Located 260 miles above the mouth of the Tennessee River, the dam has an authorized power installation of 288,000 kw., which can be increased to a possible ultimate of 444,000 kw. The reservoir at the dam adds 377,000 acre-feet of water to controlled storage on the Tennessee River system

Generator works at the winding of a generator stator in a new addition...

Picryl description: Public domain image of a quarry, mine, excavation, or mining site, free to use, no copyright restrictions.

Dam. Paradise Valley, Nevada Folklife Collection

Dam. Paradise Valley, Nevada Folklife Collection

People in photograph: Cassinelli, Pete; Cassinelli, Bob Made of fiberglass Public domain photograph - historical image of Nevada, United States, free to use, no copyright restrictions image - Picryl descriptio... More

Mill Dam, ca. 1870 - A black and white photo of a group of people

Mill Dam, ca. 1870 - A black and white photo of a group of people

Public domain photograph of 19th-century vintage card, free to use, no copyright restrictions image - Picryl description

Aerial view of Hoover Dam near Boulder City, Nevada

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

Aerial view of Hoover Dam, near Boulder City, Nevada

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

Lake Mead National Recreation Area, formed when Boulder Dam (now Hoover Dam) was built, Boulder City, Nevada

Lake Mead National Recreation Area, formed when Boulder Dam (now Hoove...

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. Highway 189 & Deer Creek Reservoir, Charleston, Wasatch County, UT

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.

Spillway at Avalon Dam constructed by Pecos Valley Irrigation & Improvement Company

Spillway at Avalon Dam constructed by Pecos Valley Irrigation & Improv...

Picryl description: Public domain image of a waterfall, water stream, cascade, nature site, free to use, no copyright restrictions.

Aerial view of a portion the water and surroundings of Lake Mead, created by the construction of nearby Hoover Dam, which straddles the Arizona-Nevada border

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

Columbia Canal & Power Plant, Waterfront of Broad River, Columbia, Richland County, SC

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, Utica, La Salle County, IL

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

Illinois Waterway, Starved Rock Lock and Dam , 950 North 27th Road, Utica, La Salle County, IL

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 Birmingham, Kellerman, Tuscaloosa County, AL

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

J. Clark Salyer National Wildlife Refuge, Dam 320, Along Lower Souris River, Kramer, Bottineau County, ND

J. Clark Salyer National Wildlife Refuge, Dam 320, Along Lower Souris ...

Picryl description: Public domain image of wildlife, wild animals, nature, free to use, no copyright restrictions.

Holter Hydroelectric Facility, Dam & Power House, End of Holter Dam Road, Wolf Creek, Lewis and Clark County, MT

Holter Hydroelectric Facility, Dam & Power House, End of Holter Dam Ro...

Significance: The Holter Hydroelectric Facility is significant for its association with the industrial development of Montana and the consolidation of most of the state's electric industry into The Montana Powe... More

Greenfields ranch--A drop in the Kern Island canal

Greenfields ranch--A drop in the Kern Island canal

Canal with wooden dam, Kern County, California. Watkins photo. no. 69.

Heber Light & Power Company, Hydroelectric Plant, U.S. Route 40/189, Heber City, Wasatch County, UT

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 Missoula, Milltown, Missoula County, MT

Milltown Dam, Spillway, Clark Fork River, 6 miles upstream from Missou...

Survey number: HAER MT-43-B Building/structure dates: 1908 Initial Construction

Milltown Dam, Spillway, Clark Fork River, 6 miles upstream from Missoula, Milltown, Missoula County, MT

Milltown Dam, Spillway, Clark Fork River, 6 miles upstream from Missou...

Survey number: HAER MT-43-B Building/structure dates: 1908 Initial Construction

Milltown Dam, Spillway, Clark Fork River, 6 miles upstream from Missoula, Milltown, Missoula County, MT

Milltown Dam, Spillway, Clark Fork River, 6 miles upstream from Missou...

Survey number: HAER MT-43-B Building/structure dates: 1908 Initial Construction

Three Bears Lake & Dams, West Dam, North of Marias Pass, East Glacier Park, Glacier County, MT

Three Bears Lake & Dams, West Dam, North of Marias Pass, East Glacier ...

Survey number: HAER MT-88-B Building/structure dates: 1902 Initial Construction

Hurricane Irrigation Canal, State Route 15 Vicinity, Hurricane, Washington County, UT

Hurricane Irrigation Canal, State Route 15 Vicinity, Hurricane, Washin...

Significance: When an expanding population created a demand for more farmland, the residents of the narrow Virgin River valley turned to the Hurricane Bench, a broad expanse of fertile land requiring only water... More

Bluebird Dam, On Ouzel Creek 7 miles west of Allenspark, Allenspark, Boulder County, CO

Bluebird Dam, On Ouzel Creek 7 miles west of Allenspark, Allenspark, B...

Significance: Completed ca. 1923, it is locally significant to Boulder County as an intact example of an early 20th century, and relatively uncommon, arch concrete dam. The dam documents an important engineerin... More

Bluebird Dam, On Ouzel Creek 7 miles west of Allenspark, Allenspark, Boulder County, CO

Bluebird Dam, On Ouzel Creek 7 miles west of Allenspark, Allenspark, B...

Significance: Completed ca. 1923, it is locally significant to Boulder County as an intact example of an early 20th century, and relatively uncommon, arch concrete dam. The dam documents an important engineerin... More

Bluebird Dam, On Ouzel Creek 7 miles west of Allenspark, Allenspark, Boulder County, CO

Bluebird Dam, On Ouzel Creek 7 miles west of Allenspark, Allenspark, B...

Significance: Completed ca. 1923, it is locally significant to Boulder County as an intact example of an early 20th century, and relatively uncommon, arch concrete dam. The dam documents an important engineerin... More

Silas C. Read Sawmill, Outlet of Maxwell Lake near North Range Road, Fort Gordon, Richmond County, GA

Silas C. Read Sawmill, Outlet of Maxwell Lake near North Range Road, F...

Significance: The Silas C. Read Sawmill (previously referred to as the Maxwell Mill) is one of the oldest sawmills in Georgia. The sawmill may have been established by Silas C. and Lucy J. Read during the Civil... More

Silas C. Read Sawmill, Outlet of Maxwell Lake near North Range Road, Fort Gordon, Richmond County, GA

Silas C. Read Sawmill, Outlet of Maxwell Lake near North Range Road, F...

Significance: The Silas C. Read Sawmill (previously referred to as the Maxwell Mill) is one of the oldest sawmills in Georgia. The sawmill may have been established by Silas C. and Lucy J. Read during the Civil... More

Hoover Dam, Spanning Colorado River at Route 93, Boulder City, Clark County, NV

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 County, NV

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

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

Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR

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

Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR

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

Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR

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

Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR

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

Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR

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

Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR

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

Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR

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

Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR

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

Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR

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

Owyhee Dam, Across Owyhee River, Nyssa, Malheur County, OR

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 Plant Road, Grace, Caribou County, ID

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

Plotina i melʹnit︠s︡a na Kn. Fedorovskoĭ storoni︠e︡

Plotina i melʹnit︠s︡a na Kn. Fedorovskoĭ storoni︠e︡

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

Skagit Power Development, Gorge High Dam, On Skagit River, 2.9 miles upstream from Newhalem, Newhalem, Whatcom County, WA

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 upstream from Newhalem, Newhalem, Whatcom County, WA

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

Trout Creek Dam, River Mile 1.8 on Trout Creek, Carson, Skamania County, WA

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 County, WA

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

Eastside Reservoir, Diamond & Domenigoni Valleys, southwest of Hemet, Hemet, Riverside County, CA

Eastside Reservoir, Diamond & Domenigoni Valleys, southwest of Hemet, ...

Reservoir should be full by 2004. Survey number: HAER CA-248 Building/structure dates: 1999 Initial Construction

Monongahela River Lock & Dam No. 7, River Mile No. 85, Greensboro, Greene County, PA

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

Little Kaukauna Lock & Dam, At 23-mile marker on Lower Fox River, Rockland, La Crosse County, WI

Little Kaukauna Lock & Dam, At 23-mile marker on Lower Fox River, Rock...

Significance: The Little Kaukauna Lock and Dam Complex allows passage for watercraft around the rapids present in the Lower Fox River at Little Kaukauna. Survey number: HAER WI-89 Building/structure dates: 18... More

Pine River Reservoir Dam, Cross Lake, Crow Wing County, MN

Pine River Reservoir Dam, Cross Lake, Crow Wing County, MN

Significance: The Pine River Dam is one of six Mississippi River Headwaters Reservoirs dam sites that are historically significant for their association with navigation, commerce, tourism, the Ojibway Indians, ... More

High Mountain Dams in Bonneville Unit, Marjorie Lake Dam, Wasatch National Forest, Kamas, Summit County, UT

High Mountain Dams in Bonneville Unit, Marjorie Lake Dam, Wasatch Nati...

Significance: Typical earth-fill structures, the dams on Marjorie and Duck lakes were constructed using similar specifications, including the stipulation for "carefully hand-laid rock faces." They are represen... More

Keechelus Dam, Yakima River, 10 miles northwest of Easton, Easton, Kittitas County, WA

Keechelus Dam, Yakima River, 10 miles northwest of Easton, Easton, Kit...

Public domain photograph - historical image of Washington State, United States, free to use, no copyright restrictions image - Picryl description

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

Wickiup Dam, Deschutes River, La Pine, Deschutes County, OR

Wickiup Dam, Deschutes River, La Pine, Deschutes County, OR

Significance: Wickiup Dam and its related features are significant at the state level for their association with the development of the irrigated agricultural economy that strongly influenced the historic devel... More

Wickiup Dam, Deschutes River, La Pine, Deschutes County, OR

Wickiup Dam, Deschutes River, La Pine, Deschutes County, OR

Significance: Wickiup Dam and its related features are significant at the state level for their association with the development of the irrigated agricultural economy that strongly influenced the historic devel... More

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

High Mountain Dams in Upalco Unit, East Timothy Lake Dam, Ashley National Forest, 8.4 miles North of Swift Creek Campground, Mountain Home, Duchesne County, UT

High Mountain Dams in Upalco Unit, East Timothy Lake Dam, Ashley Natio...

Significance: With a crest length of almost 1,400 feet, the East Timothy Lake dam is distinguished as by far the largest dam in the Upalco Unit of the Central Utah Project. It was completed in 1951 as the last... More

High Mountain Dams in Upalco Unit, East Timothy Lake Dam, Ashley National Forest, 8.4 miles North of Swift Creek Campground, Mountain Home, Duchesne County, UT

High Mountain Dams in Upalco Unit, East Timothy Lake Dam, Ashley Natio...

Significance: With a crest length of almost 1,400 feet, the East Timothy Lake dam is distinguished as by far the largest dam in the Upalco Unit of the Central Utah Project. It was completed in 1951 as the last... 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

Carlsbad Irrigation District, McMillan Dam, On Pecos River, 13 miles North of Carlsbad, Carlsbad, Eddy County, NM

Carlsbad Irrigation District, McMillan Dam, On Pecos River, 13 miles N...

Significance: The Pecos Irrigation and Improvement Company constructed McMillan Dam in 1893 as part of an overly-ambitious plan to irrigate hundreds of thousands of acres in the Pecos Valley. The reservoir cre... More

Carlsbad Irrigation District, McMillan Dam, On Pecos River, 13 miles North of Carlsbad, Carlsbad, Eddy County, NM

Carlsbad Irrigation District, McMillan Dam, On Pecos River, 13 miles N...

Significance: The Pecos Irrigation and Improvement Company constructed McMillan Dam in 1893 as part of an overly-ambitious plan to irrigate hundreds of thousands of acres in the Pecos Valley. The reservoir cre... More

Carlsbad Irrigation District, McMillan Dam, On Pecos River, 13 miles North of Carlsbad, Carlsbad, Eddy County, NM

Carlsbad Irrigation District, McMillan Dam, On Pecos River, 13 miles N...

Significance: The Pecos Irrigation and Improvement Company constructed McMillan Dam in 1893 as part of an overly-ambitious plan to irrigate hundreds of thousands of acres in the Pecos Valley. The reservoir cre... More

Ohio Slack Water Dams, Lock & Dam No. 4, East bank of Ohio River at mile point 18.6, along State Route 65, Ambridge, Beaver County, PA

Ohio Slack Water Dams, Lock & Dam No. 4, East bank of Ohio River at mi...

Significance: Ohio Slack Water Dams, Lock and Dam No. 4, HAER No. PA-227-A was part of the fifty-two slackwater locks and dams constructed by the U.S. Army Corps of Engineers on the Ohio River, between 1877-191... More

Mormon Flat Dam, On Salt River, Eastern Maricopa County, east of Phoenix, Phoenix, Maricopa County, AZ

Mormon Flat Dam, On Salt River, Eastern Maricopa County, east of Phoen...

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

Mormon Flat Dam, On Salt River, Eastern Maricopa County, east of Phoenix, Phoenix, Maricopa County, AZ

Mormon Flat Dam, On Salt River, Eastern Maricopa County, east of Phoen...

Picryl description: Public domain image of a landscape with water, mountains, and sky, free to use, no copyright restrictions.

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

Reclaiming vast areas by irrigation the great Roosevelt Dam, Yuma, Ariz.

Reclaiming vast areas by irrigation the great Roosevelt Dam, Yuma, Ari...

Stereograph showing Theodore Roosevelt Dam. J218068 U.S. Copyright Office. Copyright by Keystone View Company. No. 16742.

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

High Mountain Dams in Upalco Unit, Bluebell Lake Dam, Ashley National Forest, 11.2 miles Northwest of Swift Creek Campground, Mountain Home, Duchesne County, UT

High Mountain Dams in Upalco Unit, Bluebell Lake Dam, Ashley National ...

Significance: Bluebell Lake is one of several natural high mountain lakes in the Swift Creek and Yellowstone River drainages dammed by the Farmers Irrigation Company in the 1920s and 1930s, to store water for i... More

Illinois Waterway, Marseilles Lock and Dam, 1 Hawk Drive, Marseilles, La Salle County, IL

Illinois Waterway, Marseilles Lock and Dam, 1 Hawk Drive, Marseilles, ...

Significance: Marseilles Lock and Dam Historic District is significant as a component of the Illinois Waterway, which was developed to provide a navigable route from Lake Michigan to the Mississippi River and b... More

Illinois Waterway, Marseilles Lock and Dam, 1 Hawk Drive, Marseilles, La Salle County, IL

Illinois Waterway, Marseilles Lock and Dam, 1 Hawk Drive, Marseilles, ...

Significance: Marseilles Lock and Dam Historic District is significant as a component of the Illinois Waterway, which was developed to provide a navigable route from Lake Michigan to the Mississippi River and b... More

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Picryl description: Public domain image of a basement, underground, lobby, free to use, no copyright restrictions.

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph of wooden church building, free to use, no copyright restrictions image - Picryl description

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph of wooden church building, free to use, no copyright restrictions image - Picryl description

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Public domain photograph of attic, house frame, free to use, no copyright restrictions image - Picryl description

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets at Stony Creek, Dauphin, Dauphin County, PA

Dauphin Water Works, Southeast corner of Susquehanna & Canal Streets a...

Picryl description: Public domain image of a park, trees, outdoors, free to use, no copyright restrictions.

Gallipolis Locks & Dam, Across Ohio River, Gallipolis, Mason County, WV

Gallipolis Locks & Dam, Across Ohio River, Gallipolis, Mason County, W...

Picryl description: Public domain image of a bridge, water, historic structure, 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 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.

Terminal Dam, Tacoma, La Plata County, CO

Terminal Dam, Tacoma, La Plata County, CO

Significance: It was an integral part of the Tacoma Project, an early hydroelectric development in southwest Colorado. The Project was constructed in the early 1900s to serve the needs of the mining operations ... More

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