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Appleton Locks & Dams, Storage Building at Lock 3, South of Lock 3, near Upper Gate, Appleton, Outagamie County, WI

Appleton Locks & Dams, Storage Building at Lock 3, South of Lock 3, ne...

Significance: The storage building functions as part of the daily operation of the Appleton Locks and Dams Complex. Survey number: HAER WI-84-J Building/structure dates: 1978 Initial Construction

Lehigh Canal, Slate Dam, Lehigh Canal opposite Laury's Station in Allen Township, Treichlers, Northampton County, PA

Lehigh Canal, Slate Dam, Lehigh Canal opposite Laury's Station in Alle...

Significance: Originally built in 1829, the dam has been several times rebuilt, most recently in 1902 after it was carried away in the great flood of 1902 on February 28th of that year. In 1955 the dam was bre... More

Lehigh Canal, Hokendauqua Dam, Lehigh River 300 feet north of Hokendauqua-North Catasauqua Bridge, North Catasauqua, Northampton County, PA

Lehigh Canal, Hokendauqua Dam, Lehigh River 300 feet north of Hokendau...

Significance: 416 foot stone and timber crib dam with an effective height of 6.9 feet, impounding a slackwater pool 2000 yards upstream to the outlet lock of Section Five. Originally built in 1829, the dam has... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... More

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Bloede Dam, Spanning Patapsco River, Avalon, Baltimore County, MD

Significance: In 1907, the Patapsco Electric and Manufacturing Company contracted Ambursen Hydraulic Construction Company to build the Bloede Dam using Nils F. Ambursen's patent. The proposed dam would generate... 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

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

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

High Mountain Dams in Bonneville Unit, Pot Lake Dam, Wasatch National ...

Significance: Pot, Fire and Weir lakes, all built in 1934 by the Provo Reservoir Company, are indicative of the renewed local interest in reservoir-building sparked by the drought of 1931. They are historicall... 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

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

High Mountain Dams in Bonneville Unit, Star Lake Dam, Wasatch National...

Significance: The existing Star Lake Dam is actually the second retention structure built on that lake. The Provo Reservoir Company had built a small dam over the natural outlet by 1923; that was replaced with... 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

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

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

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

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

Butt Valley Dam, Butt Valley Reservoir Road, Caribou, Plumas County, CA

Butt Valley Dam, Butt Valley Reservoir Road, Caribou, Plumas County, C...

Significance: Butt Valley Dam was constructed during the development of North Fork Feather River hydroelectric power and was part of the overall system. The existing dam consists of the 1921 rock fill dam and ... More

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

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

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

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

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

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

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

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

Middle Creek Hydroelectric Dam, On Middle Creek, West of U.S. Route 15, 3 miles South of Selinsgrove, Selinsgrove, Snyder County, PA

Middle Creek Hydroelectric Dam, On Middle Creek, West of U.S. Route 15...

Significance: The Middle Creek Hydroelectric Dam is a significant example of a timber crib dam and small electric generating station, that is typical of early rural electrification in America. Locally it was a... More

Middle Creek Hydroelectric Dam, On Middle Creek, West of U.S. Route 15, 3 miles South of Selinsgrove, Selinsgrove, Snyder County, PA

Middle Creek Hydroelectric Dam, On Middle Creek, West of U.S. Route 15...

Significance: The Middle Creek Hydroelectric Dam is a significant example of a timber crib dam and small electric generating station, that is typical of early rural electrification in America. Locally it was a... More

High Mountain Dams in Upalco Unit, Five Point Lake Dam, Ashley National Forest, 12 miles Northwest of Swift Creek Campground, Mountain Home, Duchesne County, UT

High Mountain Dams in Upalco Unit, Five Point Lake Dam, Ashley Nationa...

Significance: Five Point Lake is the largest reservoired body of water in the Yellowstone drainage, and with a crest length of 970 feet, Five Point Lake Dam is the second longest of the earthen dams in the Upal... More

Lockport Historic District, Chicago Sanitary & Ship Canal, Butterfly Dam, Lockport, Will County, IL

Lockport Historic District, Chicago Sanitary & Ship Canal, Butterfly D...

Significance: The Butterfly Dam was constructed in the middle of the Chicago Sanitary and Ship Canal for the purpose of providing flood protection for Joliet and other points on the canal west of Lockport. The... 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

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

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

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

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mississippi River, Muscatine, Muscatine County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mississippi River, Muscatine, Muscatine County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... 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, Water Lily Lake Dam, Ashley National Forest, 1.1 miles Northeast of Swift Creek Campground, Mountain Home, Duchesne County, UT

High Mountain Dams in Upalco Unit, Water Lily Lake Dam, Ashley Nationa...

Significance: The Water Lily Lake Dam is the oldest manmade structure to reservoir a natural lake in the Swift Creek drainage. With a crest length of 64 feet, it is the smallest of the dams in the Upalco Unit ... More

Montezuma Valley Irrigation Company System, McPhee Dam Site, Dolores, Montezuma County, CO

Montezuma Valley Irrigation Company System, McPhee Dam Site, Dolores, ...

Survey number: HAER CO-4-I Public domain photograph - historical image of Colorado, United States, free to use, no copyright restrictions image - Picryl description

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

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

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

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

High Mountain Dams in Bonneville Unit, Long Lake Dam, Wasatch National...

Significance: Construction of Long Lake Dam was undertaken in 1923 by the Provo Reservoir Company to augment water flow through its canal to the pumping station completed that same year at the Jordan Narrows. ... More

High Mountain Dams in Upalco Unit, Twin Pots Dam, Ashley National Forest, 10.1 miles North of Mountain Home, Mountain Home, Duchesne County, UT

High Mountain Dams in Upalco Unit, Twin Pots Dam, Ashley National Fore...

Significance: At the time of its initial construction in 1921, the Twin Pots Dam not only held the largest body of impounded water in the Upalco Unit, it was the first successful attempt to impound running wate... More

High Mountain Dams in Upalco Unit, Twin Pots Dam, Ashley National Forest, 10.1 miles North of Mountain Home, Mountain Home, Duchesne County, UT

High Mountain Dams in Upalco Unit, Twin Pots Dam, Ashley National Fore...

Significance: At the time of its initial construction in 1921, the Twin Pots Dam not only held the largest body of impounded water in the Upalco Unit, it was the first successful attempt to impound running wate... More

Bear Trap Dam, State Route 115, Stoddartsville, Luzerne County, PA

Bear Trap Dam, State Route 115, Stoddartsville, Luzerne County, PA

Significance: The dam is the best preserved example of the two remaining dams from a one-way slack water navigation system for carrying coal, lumber, and milled products down the Lehigh River. Developed by Josi... More

Ouachita River Lock & Dam No. 8, Ouachita River at River Mile 282.8, Calion, Union County, AR

Ouachita River Lock & Dam No. 8, Ouachita River at River Mile 282.8, C...

Significance: The Ouachita River Lock and Dam No. 8 is one of the oldest remaining locks and dams in the State of Arkansas. It represents a vital segment in the earliest attempt by the U.S. Army Corps of Engin... More

Ouachita River Lock & Dam No. 8, Ouachita River at River Mile 282.8, Calion, Union County, AR

Ouachita River Lock & Dam No. 8, Ouachita River at River Mile 282.8, C...

Significance: The Ouachita River Lock and Dam No. 8 is one of the oldest remaining locks and dams in the State of Arkansas. It represents a vital segment in the earliest attempt by the U.S. Army Corps of Engin... More

Ouachita River Lock & Dam No. 8, Ouachita River at River Mile 282.8, Calion, Union County, AR

Ouachita River Lock & Dam No. 8, Ouachita River at River Mile 282.8, C...

Significance: The Ouachita River Lock and Dam No. 8 is one of the oldest remaining locks and dams in the State of Arkansas. It represents a vital segment in the earliest attempt by the U.S. Army Corps of Engin... More

Appleton Locks & Dams, Fox River at Oneida Street, Appleton, Outagamie County, WI

Appleton Locks & Dams, Fox River at Oneida Street, Appleton, Outagamie...

Significance: The Appleton Locks and Dams Complex allows passage for watercraft around 1 1/2 miles of rapids as well as a 4 foot falls present in the Lower Fox River at Appleton. Survey number: HAER WI-84 Bui... More

Appleton Locks & Dams, Fox River at Oneida Street, Appleton, Outagamie County, WI

Appleton Locks & Dams, Fox River at Oneida Street, Appleton, Outagamie...

Significance: The Appleton Locks and Dams Complex allows passage for watercraft around 1 1/2 miles of rapids as well as a 4 foot falls present in the Lower Fox River at Appleton. Survey number: HAER WI-84 Bui... More

Appleton Locks & Dams, Fox River at Oneida Street, Appleton, Outagamie County, WI

Appleton Locks & Dams, Fox River at Oneida Street, Appleton, Outagamie...

Significance: The Appleton Locks and Dams Complex allows passage for watercraft around 1 1/2 miles of rapids as well as a 4 foot falls present in the Lower Fox River at Appleton. Survey number: HAER WI-84 Bui... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 ...

Significance: Milner Dam and its canal system have national significance in agricultural history as a rare successful example of state-supervised private irrigation development provided for in Senator Joseph M.... More

Hofmann Dam, Riverside, Cook County, IL

Hofmann Dam, Riverside, Cook County, IL

Survey number: HAER IL-163 Building/structure dates: 1908 Initial Construction Building/structure dates: 1936 Subsequent Work Building/structure dates: 1950 Subsequent Work

St. Lucie Canal, St. Lucie Lock No. 1, St. Lucie, Cross State Canal, Okeechobee Intracoastal Waterway, Stuart, Martin County, FL

St. Lucie Canal, St. Lucie Lock No. 1, St. Lucie, Cross State Canal, O...

Significance: Engineered by the U.S. Army Corps of Engineers, Jacksonville Office in 1937, St. Lucie Lock and Dam was designed for preventive measures during hurricanes, floods, and droughts while allowing navi... More

St. Lucie Canal, St. Lucie Lock No. 1, St. Lucie, Cross State Canal, Okeechobee Intracoastal Waterway, Stuart, Martin County, FL

St. Lucie Canal, St. Lucie Lock No. 1, St. Lucie, Cross State Canal, O...

Significance: Engineered by the U.S. Army Corps of Engineers, Jacksonville Office in 1937, St. Lucie Lock and Dam was designed for preventive measures during hurricanes, floods, and droughts while allowing navi... More

Two Mile Reservoir, Santa Fe River, intersection of Canyon & Cerro Gordo Roads, Santa Fe, Santa Fe County, NM

Two Mile Reservoir, Santa Fe River, intersection of Canyon & Cerro Gor...

Documentation produced as part of the Southwestern Water Resources Project. Significance: Two Mile Dam, constructed in Santa Fe, New Mexico in 1893, embodies the distinct characteristics of a tamped earth dam, ... More

Woodville Canal Company, West side of Snake River (River Mile 796), Woodville, Bingham County, ID

Woodville Canal Company, West side of Snake River (River Mile 796), Wo...

Significance: The Woodville Canal Company represents one of the few remaining small-scale canal companies operating in eastern Idaho that continues to be administered and managed by district farmers. The Woodv... More

Little Chute Lock & Dam, Fox River at Mill Street, Little Chute, Outagamie County, WI

Little Chute Lock & Dam, Fox River at Mill Street, Little Chute, Outag...

Significance: The Little Chute Locks and Dam Complex allowed passage for water craft in an otherwise unnavigable stretch of the Fox River at Little Chute created by a 36 foot drop in elevation in a little under... More

Little Chute Lock & Dam, Fox River at Mill Street, Little Chute, Outagamie County, WI

Little Chute Lock & Dam, Fox River at Mill Street, Little Chute, Outag...

Significance: The Little Chute Locks and Dam Complex allowed passage for water craft in an otherwise unnavigable stretch of the Fox River at Little Chute created by a 36 foot drop in elevation in a little under... More

Little Chute Lock & Dam, Fox River at Mill Street, Little Chute, Outagamie County, WI

Little Chute Lock & Dam, Fox River at Mill Street, Little Chute, Outag...

Significance: The Little Chute Locks and Dam Complex allowed passage for water craft in an otherwise unnavigable stretch of the Fox River at Little Chute created by a 36 foot drop in elevation in a little under... More

Little Chute Lock & Dam, Fox River at Mill Street, Little Chute, Outagamie County, WI

Little Chute Lock & Dam, Fox River at Mill Street, Little Chute, Outag...

Significance: The Little Chute Locks and Dam Complex allowed passage for water craft in an otherwise unnavigable stretch of the Fox River at Little Chute created by a 36 foot drop in elevation in a little under... More

Kaukauna Lock & Dam, Fox River at Canal Street, Kaukauna, Outagamie County, WI

Kaukauna Lock & Dam, Fox River at Canal Street, Kaukauna, Outagamie Co...

Significance: The Kaukauna Locks and Dam Complex provides passage around drop in elevation of 50 feet in the Lower Fox River at Kaukauna. The complex served as an integral part of the Lower Fox River Waterway ... More

Kaukauna Lock & Dam, Fox River at Canal Street, Kaukauna, Outagamie County, WI

Kaukauna Lock & Dam, Fox River at Canal Street, Kaukauna, Outagamie Co...

Significance: The Kaukauna Locks and Dam Complex provides passage around drop in elevation of 50 feet in the Lower Fox River at Kaukauna. The complex served as an integral part of the Lower Fox River Waterway ... More

Kaukauna Lock & Dam, Fox River at Canal Street, Kaukauna, Outagamie County, WI

Kaukauna Lock & Dam, Fox River at Canal Street, Kaukauna, Outagamie Co...

Significance: The Kaukauna Locks and Dam Complex provides passage around drop in elevation of 50 feet in the Lower Fox River at Kaukauna. The complex served as an integral part of the Lower Fox River Waterway ... More

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