Theodore Roosevelt Dam
Encyclopedia
Theodore Roosevelt Dam is a dam
on the Salt River
located northeast of Phoenix, Arizona
. The dam is 357 feet (108.8 m) high and forms Theodore Roosevelt Lake
as it impounds the Salt River
. Originally built between 1905 and 1911, the dam was renovated and expanded in 1989-1996. The dam is named after then-President Theodore Roosevelt
. Serving mainly for irrigation water supply and flood control, the dam also has a hydroelectric generating capacity of 36 megawatts.
of 1902, Roosevelt Dam was the first major project to be completed under the new federal reclamation program. This, the world's highest masonry dam, was started in 1906 and completed in 1911. The beginning of federal production of electric power occurred at Roosevelt Dam when Congress, in 1906, authorized the Reclamation Service to develop and sell hydroelectric power at the Salt River Project.
The Reclamation Act of 1902 created the United States Reclamation Service whose purpose was to design and construct irrigation projects to aid the settlement of the arid west. Previous efforts by individuals and private irrigation companies were inadequate and often unsuccessful. With the creation of the Reclamation Service, the lead role of the federal government in developing large-scale irrigation projects was firmly established.
Construction on Roosevelt Dam began in 1903 just below the confluence of Tonto Creek and the Salt River. The primary purpose of the project was to provide water storage for the Salt River Project
and flood control through the Salt River Valley. The dam was finished in 1911 after several devastating floods had interrupted the construction progress in 1905. Completed at a cost of $10 million, it was the largest masonry dam in the world for its time with a height of 280 feet (84 m) and a length of 723 feet (216 m), while Roosevelt Lake was for a time the world's largest artificial reservoir. The dam was originally known as "Salt River Dam #1", it was not until 1959 that the dam and reservoir were officially named after Theodore Roosevelt.
Roosevelt Dam, as originally conceived and built, was a symbol of success and a showpiece for the new agency. The dam contributed more than any other dam in Arizona to the settlement of Central Arizona and to the development of large-scale irrigation there. A secondary purpose of the dam was to generate a moderate amount of hydroelectric power. The lake created behind Roosevelt Dam, known as Lake Roosevelt, could hold more than 1000000 acre.ft of water.
The dam was listed as a National Historic Landmark
in 1963.
, and its height was raised 77 feet (23 m) to 357 feet (107 m), which had the effect of increasing the storage capacity of Roosevelt Lake by roughly 20%. This project was completed in 1996 at a cost of $430 million. The $430 million in costs included three other major construction contracts associated with the dam. These included the realignment of Highway 188 over the new bridge up stream of the dam, renovations to the hydroelectric power plant, and a tunneling contract known as the "Lake Tap". The Lake Tap contract would provide locations where the penstocks would be located to bring water into the hydroelectric power plant. Shortly after completion, however, the area entered into a prolonged period of drought
, and it would be some time before the newly increased capacity was put to use, with the lake finally reaching historic levels of 100% capacity in February 2009.
As a result of the reconstruction, the dam has a completely altered appearance from when it was originally listed as a National Historic Landmark. The original rubble-masonry dam was completely encased in concrete, and the structural height was extended from 280 feet (85.3 m) to 357 feet (108.8 m). Since the dam no longer had the integrity of the design, materials, workmanship, feeling, or association that it had when it was originally listed, the National Historic Landmark designation was withdrawn on March 10, 1999. The Theodore Roosevelt Dam National Register District contains other resources that are listed on the National Register of Historic Places
, but the dam itself is no longer a contributing property
to the district.
Dam
A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are...
on the Salt River
Salt River (Arizona)
The Salt River is a stream in the U.S. state of Arizona. It is the largest tributary of the Gila River. The river is about long. Its drainage basin is about large. The longest of the Salt River's many tributaries is the Verde River...
located northeast of Phoenix, Arizona
Phoenix, Arizona
Phoenix is the capital, and largest city, of the U.S. state of Arizona, as well as the sixth most populated city in the United States. Phoenix is home to 1,445,632 people according to the official 2010 U.S. Census Bureau data...
. The dam is 357 feet (108.8 m) high and forms Theodore Roosevelt Lake
Theodore Roosevelt Lake
Theodore Roosevelt Lake is a large reservoir formed by Theodore Roosevelt Dam on the Salt River in Arizona as part of the Salt River Project...
as it impounds the Salt River
Salt River (Arizona)
The Salt River is a stream in the U.S. state of Arizona. It is the largest tributary of the Gila River. The river is about long. Its drainage basin is about large. The longest of the Salt River's many tributaries is the Verde River...
. Originally built between 1905 and 1911, the dam was renovated and expanded in 1989-1996. The dam is named after then-President Theodore Roosevelt
Theodore Roosevelt
Theodore "Teddy" Roosevelt was the 26th President of the United States . He is noted for his exuberant personality, range of interests and achievements, and his leadership of the Progressive Movement, as well as his "cowboy" persona and robust masculinity...
. Serving mainly for irrigation water supply and flood control, the dam also has a hydroelectric generating capacity of 36 megawatts.
History
One of the original five federal projects authorized on March 13, 1903, under the Newlands Reclamation ActNewlands Reclamation Act
The Reclamation Act of 1902 is a United States federal law that funded irrigation projects for the arid lands of 20 states in the American West....
of 1902, Roosevelt Dam was the first major project to be completed under the new federal reclamation program. This, the world's highest masonry dam, was started in 1906 and completed in 1911. The beginning of federal production of electric power occurred at Roosevelt Dam when Congress, in 1906, authorized the Reclamation Service to develop and sell hydroelectric power at the Salt River Project.
The Reclamation Act of 1902 created the United States Reclamation Service whose purpose was to design and construct irrigation projects to aid the settlement of the arid west. Previous efforts by individuals and private irrigation companies were inadequate and often unsuccessful. With the creation of the Reclamation Service, the lead role of the federal government in developing large-scale irrigation projects was firmly established.
Construction on Roosevelt Dam began in 1903 just below the confluence of Tonto Creek and the Salt River. The primary purpose of the project was to provide water storage for the Salt River Project
Salt River Project
The Salt River Project is the umbrella name for two separate entities: the Salt River Project Agricultural Improvement and Power District, an agency of the state of Arizona that serves as an electrical utility for the Phoenix metropolitan area, and the Salt River Valley Water Users' Association, a...
and flood control through the Salt River Valley. The dam was finished in 1911 after several devastating floods had interrupted the construction progress in 1905. Completed at a cost of $10 million, it was the largest masonry dam in the world for its time with a height of 280 feet (84 m) and a length of 723 feet (216 m), while Roosevelt Lake was for a time the world's largest artificial reservoir. The dam was originally known as "Salt River Dam #1", it was not until 1959 that the dam and reservoir were officially named after Theodore Roosevelt.
Roosevelt Dam, as originally conceived and built, was a symbol of success and a showpiece for the new agency. The dam contributed more than any other dam in Arizona to the settlement of Central Arizona and to the development of large-scale irrigation there. A secondary purpose of the dam was to generate a moderate amount of hydroelectric power. The lake created behind Roosevelt Dam, known as Lake Roosevelt, could hold more than 1000000 acre.ft of water.
The dam was listed as a National Historic Landmark
National Historic Landmark
A National Historic Landmark is a building, site, structure, object, or district, that is officially recognized by the United States government for its historical significance...
in 1963.
Later expansion
In 1989, an ambitious expansion and renovation project was begun at Roosevelt Dam. The dam was resurfaced with concrete by J.A. Jones Construction CompanyJ.A. Jones Construction
J.A. Jones Construction was a heavy construction company headquartered in Charlotte, North Carolina. Operating internationally since the 1950s, it merged with Germany's Philipp Holzmann AG in 1979....
, and its height was raised 77 feet (23 m) to 357 feet (107 m), which had the effect of increasing the storage capacity of Roosevelt Lake by roughly 20%. This project was completed in 1996 at a cost of $430 million. The $430 million in costs included three other major construction contracts associated with the dam. These included the realignment of Highway 188 over the new bridge up stream of the dam, renovations to the hydroelectric power plant, and a tunneling contract known as the "Lake Tap". The Lake Tap contract would provide locations where the penstocks would be located to bring water into the hydroelectric power plant. Shortly after completion, however, the area entered into a prolonged period of drought
Drought
A drought is an extended period of months or years when a region notes a deficiency in its water supply. Generally, this occurs when a region receives consistently below average precipitation. It can have a substantial impact on the ecosystem and agriculture of the affected region...
, and it would be some time before the newly increased capacity was put to use, with the lake finally reaching historic levels of 100% capacity in February 2009.
As a result of the reconstruction, the dam has a completely altered appearance from when it was originally listed as a National Historic Landmark. The original rubble-masonry dam was completely encased in concrete, and the structural height was extended from 280 feet (85.3 m) to 357 feet (108.8 m). Since the dam no longer had the integrity of the design, materials, workmanship, feeling, or association that it had when it was originally listed, the National Historic Landmark designation was withdrawn on March 10, 1999. The Theodore Roosevelt Dam National Register District contains other resources that are listed on the National Register of Historic Places
National Register of Historic Places
The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...
, but the dam itself is no longer a contributing property
Contributing property
In the law regulating historic districts in the United States, a contributing resource or contributing property is any building, structure, or object which adds to the historical integrity or architectural qualities that make the historic district, listed locally or federally, significant...
to the district.