The Auburn-Folsom South Unit is a project associated with the Central Valley Project in California and is one of three units located on the American River in Northern California, the United States Bureau of Reclamation is in charge of the Central Valley Project, including this project. The initial budget for this unit was 1.5 billion dollars. [2] This unit includes a number of dams located on the American River, and work to divert and manage water in the area. The associated features of the Auburn-Folsom South Unit include the Folsom South Canal which was designed to change the direction of water flow at the Nimbus Dam along the American River near Sacramento in Northern California, Auburn Dam which was proposed to be built in the city of Auburn, California, the Sugar Pine Dam located in Placer County, and the County Line Dam and associated features of which construction was never initiated. The South Unit was approved by law in 1965, although actual construction of the projects did not begin until 1967. Some of the projects initially proposed to be a part of the unit were never halted once construction began, or were never started at all. [1]
This project goals include the need for water for irrigation, municipal uses, and industrial needs and demands in the area. [1] This project also has associated significance toward groundwater depletion in the area, as part of its original construction goals were to help provide water supply in order to lessen the depleting groundwater supplies. [1] The intended use for the water diverted utilizing the Folsom South Canal is for a multitude of purposes, predominantly being irrigation and municipal, which is in accordance with the Central Valley Project. Not only does the constructed section of canal have human uses and support in mind, but the Auburn-Folsom South Unit was also constructed with goals of creating hydrological energy generation. As well as power, there was goals to provide protection to fish species as well as recreation. [3]
The Sugar Pine Dam is the only proposed feature of the Auburn-Folsom South Unit that has been completed, this dam supplies fresh drinking water to the Foresthill, California area. The Folsom South Canal was worked on and roughly 27 miles of the proposed 68.8 miles of the canal was built in the 70’s, however, further construction of the structure was halted. [3] The Auburn Dam, of which there was a lot of concern and controversy over, was started but then was never fully constructed. The County Line Dam construction was never initiated.
When this project was initially proposed, there came with it a good amount of backlash and controversy about the project. In the early 1980s, there was a good amount of discontent surrounding the project, as many thought that the project was not economically justified. [4] The main source of controversy surrounding this project was the Auburn Dam. The Auburn Dam created a lot of safety concerns because of its unusual design, the dam was to be high and relatively thin, it would be designed as an arch dam and people were concerned about the unusual shape and curvature of the infrastructure. [1] The dam created a lot of concerns over how it would handle seismic activity. An earthquake in Oroville, California sparked concern over the Auburn Dam and several scientific groups advised against original design plans for the dam and suggested reconsidering the dam in general. [5] Not only was there concern over how the Auburn Dam would handle a potential seismic event, but the dam design also would require a considerable amount of road relocation and bridge construction in order to deal with these changes. [6] The Foresthill Bridge was constructed as a result of road diversions because of the construction of the Auburn Dam. This bridge was designed and constructed by the Bureau of Reclamation and is the second tallest bridge ever constructed by the department. [6] In regards to the Folsom South Canal, although the structure was started it was eventually halted due to concerns over minimum flows of the American River in regard to fishery and recreational use. [5] There was to be a relationship between the Auburn Dam and reservoir and the Folsom South Canal. The Auburn Reservoir was designed to power the Auburn Power plant with hydroelectric power, this release of water from the Auburn Reservoir would then provide water to the Folsom South Canal. [6]
The Central Valley Project (CVP) is a federal power and water management project in the U.S. state of California under the supervision of the United States Bureau of Reclamation (USBR). It was devised in 1933 in order to provide irrigation and municipal water to much of California's Central Valley—by regulating and storing water in reservoirs in the northern half of the state, and transporting it to the water-poor San Joaquin Valley and its surroundings by means of a series of canals, aqueducts and pump plants, some shared with the California State Water Project (SWP). Many CVP water users are represented by the Central Valley Project Water Association.
The Pick–Sloan Missouri Basin Program, formerly called the Missouri River Basin Project, was initially authorized by the Flood Control Act of 1944, which approved the plan for the conservation, control, and use of water resources in the Missouri River Basin.
New Melones Dam is an earth and rock filled embankment dam on the Stanislaus River, about 5 miles (8.0 km) west of Jamestown, California, United States, on the border of Calaveras County and Tuolumne County. The water impounded by the 625-foot-tall (191 m) dam forms New Melones Lake, California's fourth-largest reservoir, in the foothills of the Sierra Nevada east of the San Joaquin Valley. The dam serves mainly for irrigation water supply, and also provides hydropower generation, flood control, and recreation benefits.
The Delta–Mendota Canal is a 117-mile-long (188 km) aqueduct in central California, United States. The canal was designed and completed in 1951 by the U.S. Bureau of Reclamation as part of the Central Valley Project. It carries freshwater to replace San Joaquin River water which is diverted into the Madera Canal and Friant-Kern Canal at Friant Dam.
San Luis Dam is a major earth-filled dam in Merced County, California, which forms San Luis Reservoir, the largest off-stream reservoir in the United States. The dam and reservoir are located in the Diablo Range to the east of Pacheco Pass and about 10 miles (16 km) west of Los Banos. San Luis Dam, a jointly-owned state and federal facility, stores more than 2 million acre feet (2.5 km3) of water for the California State Water Project and the federal Central Valley Project. Although the dam is located in the valley of San Luis Creek, the majority of its water comes from man-made aqueducts which are supplied from other rivers in Northern California.
The California State Water Project, commonly known as the SWP, is a state water management project in the U.S. state of California under the supervision of the California Department of Water Resources. The SWP is one of the largest public water and power utilities in the world, providing drinking water for more than 23 million people and generating an average of 6,500 GWh of hydroelectricity annually. However, as it is the largest single consumer of power in the state itself, it has a net usage of 5,100 GWh.
Folsom Lake is a reservoir on the American River in the Sierra Nevada foothills of California, United States.
New Melones Lake is a reservoir on the Stanislaus River in the central Sierra Nevada foothills, within Calaveras County and Tuolumne County, California.
Lake Natoma is a small lake in the western United States, along the lower American River, between Folsom and Nimbus Dams in Sacramento County, California. The lake is located within the Folsom Lake State Recreation Area which is responsible for maintaining the facilities and bike trails surrounding the lake. Lake Natoma is located 15 miles east of Sacramento, and has 500 surface acres of water. The total length of lake Natoma is 4 miles.
The Nimbus Dam is a base load hydroelectric dam on the American River near Folsom, California. Approximately 8,700 acre-feet (10,700 dam3) of water is retained by the dam. It is responsible for the impoundment of water from the American River to create the Lake Natoma reservoir. The dam stands 87 feet and spans 1,093 feet. The Nimbus powerplant consists of two generators. Each generator produces enough electrical power to power over 200,000 100-watt light bulbs, about 15,500 kilowatts of electrical power. Nimbus Dam consists of 18 radial gates, each with their own gate bays. These 18 gates today are the ones that were completed in 1955 along with the rest of the dam. Of the eighteen gates, four of them have had their coating system replaced. This protects the gates from a faster rate of corrosion. The other fourteen gates have the original coating.
Folsom Dam is a concrete gravity dam on the American River of Northern California in the United States, about 25 mi (40 km) northeast of Sacramento. The dam is 340 ft (100 m) high and 1,400 ft (430 m) long, flanked by earthen wing dams. It was completed in 1955, and officially opened the following year.
Auburn Dam was a proposed concrete arch dam on the North Fork of the American River east of the town of Auburn, California, in the United States, on the border of Placer and El Dorado Counties. Slated to be completed in the 1970s by the U.S. Bureau of Reclamation, it would have been the tallest concrete dam in California and one of the tallest in the United States, at a height of 680 feet (210 m) and storing 2,300,000 acre-feet (2.8 km3) of water. Straddling a gorge downstream of the confluence of the North and Middle Forks of the American River and upstream of Folsom Lake, it would have regulated water flow and provided flood control in the American River basin as part of Reclamation's immense Central Valley Project.
The Central Utah Project is a US federal water project that was authorized for construction under the Colorado River Storage Project Act of April 11, 1956, as a participating project. In general, the Central Utah Project develops a portion of Utah's share of the yield of the Colorado River, as set out in the Colorado River Compact of 1922.
The Mokelumne Aqueduct is a 95-mile (153 km) water conveyance system in central California, United States. The aqueduct is supplied by the Mokelumne River and provides water to 35 municipalities in the East Bay in the San Francisco Bay Area. The aqueduct and the associated dams, pipelines, treatment plants and hydroelectric system are owned and operated by the East Bay Municipal Utility District (EBMUD) and provide over 90 percent of the water used by the agency.
The Yuma Project is a U.S. Bureau of Reclamation project built to irrigate over 68,000 acres (280 km2) of land in Yuma County, Arizona and parts of Imperial County, California. The project is designed to exploit year-round farming conditions and water from the Colorado River. It consists of the Laguna Diversion Dam, pumping plants, a power plant, a 53-mile (85 km) system of canals, 218 miles (351 km) of lateral canals, levees and drains. The project began in 1903 and the majority of the work was completed by 1915. It was the first dam and reclamation project on the Colorado River and workers had to overcome many natural and logistical obstacles to build and maintain it. The Laguna Diversion Dam was replaced by the Imperial Dam as the Project's water source between 1941 and 1948. Today, it serves 275 farms and over 94,000 people.
The Middle Fork American River is one of three forks that form the American River in Northern California. It drains a large watershed in the high Sierra Nevada west of Lake Tahoe and northeast of Sacramento in Placer and El Dorado Counties, between the watersheds of the North Fork American River and South Fork American River. The Middle Fork joins with the North Fork near Auburn and they continue downstream to Folsom Lake as the North Fork, even though the Middle Fork carries a larger volume of water.
Sugar Pine Reservoir is a reservoir in Placer County, California, located approximately 7 miles (11 km) north of Foresthill. The reservoir was flooded in 1982, and today supplies water to the community of Foresthill and hosts a number of recreation facilities.
Sugar Pine Dam is an earthfill embankment dam in Placer County, California, approximately 7 miles (11 km) north of Foresthill. It impounds North Shirttail Creek, a tributary of the North Fork American River, and serves as the primary municipal water supply for the Foresthill community.
The Folsom South Canal is an aqueduct in Northern California in the United States. The canal diverts water from the American River at Nimbus Dam in Sacramento County and travels about 26.7 miles (43.0 km) in a southerly direction, terminating near Clay, about 10 miles (16 km) northeast of Lodi. The canal is operated by the U.S. Bureau of Reclamation, as part of the Auburn-Folsom South Unit of the Central Valley Project. It is contracted for irrigation, industrial and municipal water supply; formerly it provided cooling water for the Rancho Seco Nuclear Generating Station. It is also connected to the Mokelumne Aqueduct, which provides a large portion of the San Francisco Bay Area's water supply.
Red Bluff Diversion Dam is a disused irrigation diversion dam on the Sacramento River in Tehama County, California, United States, southeast of the city of Red Bluff. Until 2013, the dam provided irrigation water for two canals that serve 150,000 acres (61,000 ha) of farmland on the west side of the Sacramento Valley. The dam and canals are part of the Sacramento Canals Unit of the Central Valley Project, operated by the U.S. Bureau of Reclamation. In 2013, the dam was decommissioned and the river allowed to flow freely through the site in order to protect migrating fish. A pumping plant constructed a short distance upstream now supplies water to the canal system.