"Bureau of Reclamation. The dam was constructed to raise the water level of the river because the upstream Hoover and Davis Dams blocked sediment, causing significant degradation of the riverbed that hampered water diversion. The dam diverts about of water per second to irrigate of the Palo Verde Valley and mesa lands on the west side of the Colorado River in California. The headworks of the diversion canal consists of four by pipes, while the spillway is a gated structure consisting of three long gates separated by thick piers. The control house of the dam is found immediately upstream of"
"Hoover Dam and the resulting rise in the waters of the Colorado River forced the abandonment of the town, with the last resident, Hugh Lord, leaving June 11, 1938. The ruins of St. Thomas, which became visible after the water level in Lake Mead lowered, are protected by the National Park Service as a historic site. The cemetery was relocated to Overton, Nevada where there is a St. Thomas interpretive center with a staff archaeologist doing on-going research into the history and settlement of the Muddy River. The novel Lords of St. Thomas (GWP, 2018) by Jackson Ellis tells the"
"Hoover Dam in the 1930s marked the beginning of the modern era for the Colorado River Delta. For six years, as Lake Mead filled behind the dam, virtually no freshwater reached the delta. Even spring flooding was captured. This ecologically devastating event was repeated from 1963 to 1981 as Lake Powell filled behind the Glen Canyon Dam. With these reservoirs now filled, the dams are used to regulate flow so that water can be reliably apportioned among the users of the Colorado River Compact, and its use maximized. Most flood flows can be contained, regulated, and added to the river's"
"Hoover Dam (Ohio) Hoover Dam, in Blendon Township, near Westerville, Ohio, dams the Big Walnut Creek to form the Hoover Memorial Reservoir. This reservoir is a major water source for the city of Columbus, Ohio. It holds of water and has a surface area of , or about five square miles. Construction began during 1953 due to the increased water demand of post-war Columbus. The project was completed and dedicated in 1955 and the dam officially opened in 1958. It was named for two brothers, Charles P. Hoover and Clarence B. Hoover, to honor their careers with the City of"
"Columbus Waterworks. Hoover Dam (Ohio) Hoover Dam, in Blendon Township, near Westerville, Ohio, dams the Big Walnut Creek to form the Hoover Memorial Reservoir. This reservoir is a major water source for the city of Columbus, Ohio. It holds of water and has a surface area of , or about five square miles. Construction began during 1953 due to the increased water demand of post-war Columbus. The project was completed and dedicated in 1955 and the dam officially opened in 1958. It was named for two brothers, Charles P. Hoover and Clarence B. Hoover, to honor their careers with the"
"March 1, 1936, more than two years ahead of schedule. Hoover Dam impounds Lake Mead, the largest reservoir in the United States by volume (when it is full). The dam is located near Boulder City, Nevada, a municipality originally constructed for workers on the construction project, about southeast of Las Vegas, Nevada. The dam's generators provide power for public and private utilities in Nevada, Arizona, and California. Hoover Dam is a major tourist attraction; nearly a million people tour the dam each year. The heavily traveled U.S. Route 93 (US 93) ran along the dam's crest until October 2010, when"
"until the mid-19th century, long stretches of the Colorado and Green rivers between Wyoming and Nevada remained largely unexplored due to their remote location and dangers of navigation. Because of the dramatic drop in elevation of the two rivers, there were rumors of huge waterfalls and violent rapids, and Native American tales strengthened their credibility. In 1869, one-armed Civil War veteran John Wesley Powell led an expedition from Green River Station in Wyoming, aiming to run the two rivers all the way down to St. Thomas, Nevada, near present-day Hoover Dam. Powell and nine men – none of whom had"
"was abandoned in favor of a site lower on the Colorado, where Hoover Dam was completed in 1936. In the 1960s, the area was again investigated as part of the U.S. Bureau of Reclamation's Colorado River Storage Project, and that assessment culminated in the construction of Glen Canyon Dam in 1966. The filling of the resulting Lake Powell of 24.3 million acre feet (30.0 km) inundated the Crossing of the Fathers, Charles Spencer's old mining operation, and other historic landmarks of the area. Flood control at Glen Canyon also smoothed out the seasonal flux of the Colorado River that so"
"the ""Law of the River"". The U.S. federal government was the main driving force behind the construction of dams and aqueducts, although many state and local water agencies were also involved. Most of the major dams were built between 1910 and 1970; the system keystone, Hoover Dam, was completed in 1935. The Colorado is now considered among the most controlled and litigated rivers in the world, with every drop of its water fully allocated. The environmental movement in the American Southwest has opposed the damming and diversion of the Colorado River system because of detrimental effects on the ecology and"
"as 2 billion years. The of the river that flow through the Grand Canyon are largely encompassed by Grand Canyon National Park and are known for their difficult whitewater, separated by pools that reach up to in depth. At the lower end of Grand Canyon, the Colorado widens into Lake Mead, the largest reservoir in the continental United States, formed by Hoover Dam on the border of Arizona and Nevada. Situated southeast of metropolitan Las Vegas, the dam is an integral component for management of the Colorado River, controlling floods and storing water for farms and cities in the lower"
"the river might change course and empty into the Salton Sea. The Board cautioned: ""To avoid such possibilities, the proposed dam should be constructed on conservative if not ultra-conservative lines."" On December 21, 1928, President Coolidge signed the bill authorizing the dam. The Boulder Canyon Project Act appropriated $165 million for the Hoover Dam along with the downstream Imperial Dam and All-American Canal, a replacement for Beatty's canal entirely on the U.S. side of the border. It also permitted the compact to go into effect when at least six of the seven states approved it. This occurred on March 6,"
"Lake Mohave Lake Mohave is a reservoir on the Colorado River between the Hoover Dam and Davis Dam in Cottonwood Valley defining the border between Nevada and Arizona in the United States. This 67 mile stretch of the Colorado River flows past Boulder City, Nelson, Searchlight, Cottonwood Cove, Cal-Nev-Ari, and Laughlin to the west in Nevada and Willow Beach and Bullhead City to the east in Arizona. A maximum width of 4 miles wide and an elevation of , Lake Mohave encompasses 28,260 acres of water. As Lake Mead lies to the north of the Hoover Dam, Lake Mohave and"
"rights on the Colorado. It sells water to 95 percent of the South Coast region. Lake Mead, formed by Hoover Dam, is the primary reservoir in the Colorado River basin. The Colorado River Aqueduct begins downstream from Hoover Dam, and can carry annually. An additional system diverts water from the Colorado River at the Imperial Diversion Dam provides waters to the Imperial and Coachella valleys as well as Yuma, Arizona, via the Alamo Canal, the Coachella Canal and the All-American Canal, which runs alongside the Mexican border. This system was also responsible for the accidental re-creation of the Salton Sea"
"year to Lake Mead. Hoover Dam is required to release of water each year, with the difference made up by tributaries that join the Colorado below Glen Canyon or flow into Lake Mead. Outflow, which includes evaporation and delivery to Arizona, California, Nevada, and Mexico from Lake Mead are generally in the range of , resulting in a net annual deficit of about . Before the filling of Lake Powell (a reservoir of similar size to Lake Mead) behind Glen Canyon Dam, the Colorado River flowed largely unregulated into Lake Mead, making Mead more vulnerable to drought. From 1953 to"
"Hoover Dam construction, to direct operations at Shasta Dam. The groundbreaking and official naming ceremony of Shasta Dam occurred on September 12, 1937 in the small town of Kennett shortly upstream of the dam. Congress initially approved $12 million for the project. Within five years Kennett would be submerged under the rising waters of Shasta Lake. The dam was initially known as Kennett Dam, but was eventually named after nearby Mount Shasta. After surveying several nearby sites, the Bureau of Reclamation chose to build the dam in a deep canyon about a mile above the abandoned smelter town of Coram"
"the Hoover Reservoir which provides drinking water the City of Columbus. The reservoir was constructed by damming Big Walnut Creek between Smothers Road and Central College Road and flooding the surrounding low lands. Construction began in 1953. While a dedication was held in 1955, the official opening did not occur until 1958. Numerous roads were re-routed or severed in order to construct the reservoir, including; Maxtown Road, Sunbury Road, Big Walnut Road, Oxbow Road, and Yankee Street. While swimming within the reservoir is prohibited, recreational activities such as fishing, boating, and sailing are permitted with public landings and fishing areas"
"programs. Federal money started arriving with the Federal Emergency Relief Committee in 1930. Different agencies promoted aid to the unemployed, tuberculosis patients, transients, and illegal immigrants. The money ran out by 1931 or 1932, and conditions were bad until New Deal relief operations began on a large scale in 1933. Construction programs were important, especially Hoover Dam (originally called Boulder Dam), begun by President Herbert Hoover. It is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border with Nevada. It was constructed by the Federal Bureau of Reclamation between 1931 and 1936. It operationalized"
"A dam in Glen Canyon was studied as early as 1924, but these plans were initially dropped in favor of the Hoover Dam (completed in 1936) which was located in the Black Canyon. By the 1950s, due to rapid population growth in the seven U.S. and two Mexican states comprising the Colorado River Basin, the Bureau of Reclamation deemed the construction of additional reservoirs necessary. However, the USBR faced opposition when it proposed the Echo Park Dam in Utah's Dinosaur National Monument, which the nascent environmental movement saw as a legal threat to the status of protected lands. After a"
"springs that can be found by taking a trail north from a larger bay about south of the Hoover Dam. Black Canyon of the Colorado The Black Canyon of the Colorado is the canyon on the Colorado River where Hoover Dam was built. The canyon is located on the Colorado River at the state line between Nevada and Arizona. The western wall of the gorge is in the El Dorado Mountains, and the eastern wall is in the Black Mountains of Arizona. The canyon formed about 15 million years ago during the Miocene Basin and Range uplift. Black Canyon gets"
"Black Canyon of the Colorado The Black Canyon of the Colorado is the canyon on the Colorado River where Hoover Dam was built. The canyon is located on the Colorado River at the state line between Nevada and Arizona. The western wall of the gorge is in the El Dorado Mountains, and the eastern wall is in the Black Mountains of Arizona. The canyon formed about 15 million years ago during the Miocene Basin and Range uplift. Black Canyon gets its name from the black volcanic rocks that are found throughout the area. Just south of the Hoover Dam on"
"Hoover Dam Police The Hoover Dam Police, officially the Bureau of Reclamation Police, was a federal security police force, stationed at Hoover Dam southeast of Las Vegas, Nevada. Reclamation Police Officers were stationed only at Hoover Dam. Hoover Dam was both listed on the National Register of Historic Places in 1981, and was designated a National Historic Landmark in 1985. Hoover Dam has been designated as National Critical Infrastructure. The primary responsibilities of the Hoover Dam Police Officer were to protect the dam, the world's 57th-largest hydroelectric generating station, which provides about 2,080 megawatts, its associated structures, and to safeguard"
"of poverty in America. A year after his election, the stock market crashed, and the nation's economy slipped downward into the Great Depression. After the crash, Hoover attempted to put in place many efforts to restore the economy, especially the fast-sinking agricultural sector. None worked. Hoover believed in stimulus spending and encouraged state and local governments, as well as the federal government, to spend heavily on public buildings, roads, bridges—and, most famously, the Hoover Dam on the Colorado River. But with tax revenues falling fast, the states and localities plunged into their own fiscal crises. Republicans, following their traditional mass"
"of overhead cables to allow the pneumatic concrete to be pumped at any point on the construction site. With this technique, Crowe built some of the largest dams in the American west, including the Hoover Dam, Parker Dam downstream from Hoover; Copper Basin and Gene Wash Dams on the Colorado Aqueduct system; and Shasta Dam in Northern California. All these dams were important but none approached the mythic scale or mystique of Hoover Dam. He retired in 1944 to his cattle ranch near Redding, California, where he died of a heart attack on February 26, 1946. The Hoover Dam construction"
"stretched along a 278-mile (447 km) segment of the Colorado River from the southern border of Glen Canyon National Recreation Area to the eastern boundary of Lake Mead National Recreation Area. Grand Canyon National Park was designated a World Heritage Site on October 24, 1979. In 1935, Hoover Dam started to impound Lake Mead south of the canyon. Conservationists lost a battle to save upstream Glen Canyon from becoming a reservoir. The Glen Canyon Dam was completed in 1966 to control flooding and to provide water and hydroelectric power. Seasonal variations of high flow and flooding in the spring and"
"Wheeler of the Colorado River it shows the upper part of Beaver Lake had become one of two channels of the Colorado River again. The lake appears again intact with that name on a September 1911 reprint of a U. S. Geological Survey, Reconnaissance Map, Arizona, Nevada, California, Camp Mohave Sheet, Edition of March 1892, reprinted. The lake as since dried up, after being cut off from the spring flooding of the river, following the construction of the Hoover Dam. A satellite view of the lake shows it has dried up, the middle part of the southern half of the"
"impoundment area of the Blackwater Dam in the town of Webster. Below the reservoir dam, the Blackwater encounters a short, intense whitewater stretch before flattening again for the final miles to the Contoocook in Hopkinton. Blackwater River (Contoocook River tributary) The Blackwater River is a river located in central New Hampshire in the United States. It is a tributary of the Contoocook River, part of the Merrimack River watershed. The Blackwater River is formed at Cilleyville, a village in the western part of the town of Andover, by the junction of two branch streams that lack official names on current"
"with construction ongoing. This routing is part of a proposed Interstate 11 which could potentially connect Interstate 10 west of Phoenix with Interstate 515 southeast of Las Vegas. A segment of this new highway consists of a new route across the Colorado River called the Hoover Dam Bypass. The new crossing is the Mike O'Callaghan-Pat Tillman Memorial Bridge, the first so-called concrete-steel composite arch bridge built in the United States. The bridge is with a main span. The roadway is above the river. The bypass replaced the old section of U.S. 93 that approached and crossed directly over Hoover Dam,"
"upper group states, whose mountain snow melts contributed the most water to the river system, the states of the lower group, California, Nevada, and Arizona, began to build dams, such as the magnificent Hoover Dam, to create storage reservoirs on their parts of the river system. By the 1950s, the upper states, Colorado, Utah, New Mexico, and Wyoming, obligated to send a set amount of water downstream regardless of seasonal fluctuations in water levels, also began to see the wisdom of creating a system of dams and reservoirs. To grant the four states the authority to begin this process, Congress"
"conduit and siphons. Average annual throughput is . Davis Dam is located on the Colorado River about downstream from Hoover Dam. Davis Dam stretches across the border between Arizona and Nevada and impounds the Colorado River to form Lake Mohave. The United States Bureau of Reclamation owns and operates the dam, which was completed in 1951. Davis Dam is a zoned earth fill dam with a concrete spillway, in length at the crest, and high. The earth fill dam begins on the Nevada side, but it does not extend to the Arizona side. Instead, there is an inlet formed by"
"in 1936 with the completion of Hoover Dam in Black Canyon, storing in the mammoth reservoir of Lake Mead. However, it was not able to weather the worst floods or droughts, and was filling with sediment at a rate that would render it useless in a few hundred years. But most importantly, Hoover only controlled the lower portion of the river. The Upper Basin states, whose rivers remained undammed, had no way to ensure they could fulfill their delivery obligation to the Lower Basin state while retaining enough water for their own use. Without storage reservoirs of their own, the"
"Hoover Dam does concrete,"" and was completed in 1991. The Las Vegas Wash passes under the lake and dam in pipes that require maintenance every 10 years. Actor J. Carlton Adair conceived Lake Las Vegas around 1967 as ""Lake Adair"". At the time he purchased the land and water rights. In 1987, Ronald Boeddeker acquired from the US Government when Adair went bankrupt. The property was acquired by Transcontinental Properties in 1990. In 1995, Henry Gluck, the former Chairman and Chief Executive Officer of Caesars World, became the co-Chairman of Transcontinental Properties. With Sid Bass and Lee Bass, two billionaires"
"Despite having lost one arm in the American Civil War, U.S. Army Major and geologist John Wesley Powell explored the area in 1869 and 1872. Using wooden oak boats and small groups of men the Powell Geographic Expedition charted this largely unknown region of the United States for the federal government. Construction of the Hoover Dam in the 1930s and the Glen Canyon Dam in the 1960s changed the character of the Colorado River. Dramatically reduced sediment load changed its color from reddish brown (""Colorado"" is Spanish for ""red"") to mostly clear. The apparent green color is from algae on"
"175,000 per year. In 2013 vegetation clogged cold water intake pipes that brought water from the Colorado River causing the loss of nearly 61,000 trout in August and November. Willow Beach National Fish Hatchery The Willow Beach National Fish Hatchery is administered by the U.S. Fish and Wildlife Service, located approximately 45 miles (72.4 km) South East of Las Vegas, Nevada, in Mohave County, Arizona on the Arizona side of the Colorado River twelve miles (~19 km) south of the Hoover Dam. The Willow Beach Hatchery was constructed in 1959 to take advantage of the cold water flowing from Hoover"