Lake Hennessey | |
---|---|
Location | Vaca Mountains, Napa County, California |
Coordinates | 38°28′52″N122°22′24″W / 38.48111°N 122.37333°W [1] |
Type | Reservoir |
Primary inflows | Sage Creek, Chiles Creek, Moore Creek, Conn Creek |
Primary outflows | Conn Creek [2] |
Catchment area | 54 sq mi (140 km2) [2] |
Basin countries | United States |
Max. length | 2 mi (3.2 km) |
Max. width | 3,500 ft (1,100 m) |
Surface area | 790 acres (320 ha) [2] |
Water volume | 31,000 acre-feet (38,000,000 m3) [2] |
Surface elevation | 322 feet (98 m) [1] |
Lake Hennessey is a reservoir in the Vaca Mountains, east of St. Helena and the Napa Valley, within Napa County, California.
The reservoir is formed by Conn Creek Dam, built in 1948 across Conn Creek. Construction of the earthen dam was authorized by the United States Congress when it passed the Flood Control Act of 1944 in order to mitigate flooding downstream in Napa, California. [3]
Funding for the dam was never appropriated by Congress, so in 1946 the City of Napa took on the project and built it at a cost of $550,000 plus $250,000 for the land. The cost of laying the 36 inches (910 mm) diameter pipeline from the dam to the city of Napa was $1.7 million. The 30 miles of pipe for the project was manufactured at the Basalt Rock Company plant located south of Napa. [4] The design of the dam did not include a way to drain water from the reservoir when it comes close to full capacity. Once the lake is full, water drains from a spillway causing potential flooding dangers downstream. [5] The reservoir and pipelines are maintained by the city of Napa, and it is its primary source of water. When the reservoir reaches its capacity, outflow reaches San Pablo Bay via Conn Creek to the Napa River. [6] The lake was named after Edwin R. Hennessey. Hennessey was a local civic leader who played a role in the development of the Conn Valley reservoir. [7]
Conn Creek Dam is an earthen dam 125 feet (38 m) high and 700 feet (210 m) long containing 500,000 cubic yards (380,000 m3) of material. Its crest is 330 feet (100 m) above sea level. It is owned by the City of Napa. [2]
Kelly Barnes Dam was an earthen embankment dam on Toccoa Creek in Stephens County, Georgia, United States, just outside the city of Toccoa. Heavy rainfall caused it to collapse on November 6, 1977, and the resulting flood killed 39 people and caused $2.8 million in damage. The dam was never rebuilt.
The Feather River is the principal tributary of the Sacramento River, in the Sacramento Valley of Northern California. The river's main stem is about 73 miles (117 km) long. Its length to its most distant headwater tributary is just over 210 miles (340 km). The main stem Feather River begins in Lake Oroville, where its four long tributary forks join—the South Fork, Middle Fork, North Fork, and West Branch Feather Rivers. These and other tributaries drain part of the northern Sierra Nevada, and the extreme southern Cascades, as well as a small portion of the Sacramento Valley. The total drainage basin is about 6,200 square miles (16,000 km2), with approximately 3,604 square miles (9,330 km2) above Lake Oroville.
The Napa River is a river approximately 55 miles (89 km) long in the U.S. state of California. It drains a famous wine-growing region called the Napa Valley, in the mountains north of the San Francisco Bay. Milliken Creek and Mt. Veeder watersheds are a few of its many tributaries. The river mouth is at Vallejo, where the intertidal zone of fresh and salt waters flow into the Carquinez Strait and the San Pablo Bay.
McGee Creek Reservoir is a reservoir in Atoka County, Oklahoma. It impounds the waters of McGee Creek and several smaller streams, including Potapo, Panther, Little Bugaboo, Bear, Blue, Mill, and Crooked creeks, all of which are tributaries of Muddy Boggy River. According to the Bureau of Reclamation (BuRec), the reservoir was designed to extend 14 miles (23 km) up McGee Creek and 9 miles (14 km) up Potapo Creek when the water is at "conservation level.
Coyote Creek is a river that flows through the Santa Clara Valley in Northern California. Its source is on Mount Sizer, in the mountains east of Morgan Hill. It eventually flows into Anderson Lake in Morgan Hill and then northwards through Coyote Valley to San Jose, where it empties into San Francisco Bay.
Lake Berryessa is the largest lake in Napa County, California, United States. This reservoir in the Vaca Mountains was formed following the construction of the Monticello Dam on Putah Creek in the 1950s. Since the early 1960s, this reservoir has provided water and hydroelectricity to the North Bay region of the San Francisco Bay Area.
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 27 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.
Monticello Dam is a 304-foot (93 m) high concrete arch dam in Napa County, California, United States, constructed between 1953 and 1957. The dam impounded Putah Creek to create Lake Berryessa in the Vaca Mountains.
Cull Canyon Regional Recreation Area (CCRRA) is a regional park located in Castro Valley, Alameda County, California. It is part of the East Bay Regional Park District (EBRPD) system.
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.
Lexington Reservoir is an artificial lake on the Los Gatos Creek near Los Gatos, California. The James J. Lenihan Dam, a 195 ft (59 m) high, 1,000 ft (300 m) thick earthen dam, forms the third-largest reservoir in Santa Clara County.
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.
Anderson Lake, also known as Anderson Reservoir, is an artificial lake in Morgan Hill, located in southern Santa Clara County, California. The reservoir is formed by the damming of Coyote Creek just below its confluence with Las Animas Creek. A 4,275-acre (1,730 ha) county park surrounds the reservoir and provides limited fishing, picnicking, and hiking activities. Although swimming is prohibited, boating, water-skiing, and jet-skiing are permitted in the reservoir.
Cherokee Dam is a hydroelectric dam located on the Holston River in Grainger County and Jefferson County, Tennessee, in the southeastern United States. The dam is operated and maintained by the Tennessee Valley Authority, which built the dam in the early 1940s to help meet urgent demands for energy at the outbreak of World War II. Cherokee Dam is 175 feet (53 m) high and impounds the 28,780-acre (11,650 ha) Cherokee Lake. It has a generating capacity of 136 megawatts. The dam was named for the Cherokee, a Native American tribe that controlled much of East Tennessee when the first European settlers arrived in the mid-18th century.
Chatuge Dam is a flood control and hydroelectric dam on the Hiwassee River in Clay County, in the U.S. state of North Carolina. The dam is the uppermost of three dams on the river owned and operated by the Tennessee Valley Authority, which built the dam in the early 1940s for flood storage and to provide flow regulation at Hiwassee Dam further downstream. The dam impounds the 7,000-acre (2,800 ha) Chatuge Lake, which straddles the North Carolina-Georgia state line. While originally built solely for flood storage, a generator installed at Chatuge in the 1950s gives the dam a small hydroelectric output. At the time it was built, Chatuge Dam was the highest earthen dam in the world until the Aswan Dam was built in Egypt in 1964. The dam and associated infrastructure was listed on the National Register of Historic Places in 2017.
Sonoma Water, formerly known as the Sonoma County Water Agency, maintains a water transmission system that provides naturally filtered Russian River water to more than 600,000 residents in portions of Sonoma County, California and Marin County, California. The Water Agency is a water wholesaler that sells potable water to nine cities and special districts that in turn sell drinking water to their residents. These cities and special districts are: the City of Santa Rosa, Rohnert Park, Cotati, Petaluma, Sonoma, the Town of Windsor, Valley of the Moon Water District, Marin Municipal Water District, and North Marin Water District.
Calero Reservoir, also called Calero Lake, is a reservoir in San Jose, California, located in the Calero neighborhood of Almaden Valley in South San Jose. It is the site of Calero County Park, which also includes a large area covering the lake and hundreds of acres of hills around it.
Hinckley Lake is located by Hinckley, New York. Originally dammed up to supply water to the Erie Canal, the lake provides municipal water supply to 130,000 people in the greater Utica, New York area, is a source of hydropower, and supports recreation during all seasons. The lake is located in the towns of Russia in Herkimer County, and Remsen in Oneida County. This body of water is one of many man made lakes in the Upstate NY region. Its sister lake is Delta Lake, also dammed up to supply water to the Erie Canal.
Morena Dam is a rockfill dam across Cottonwood Creek, a tributary of the Tijuana River, in southern San Diego County, California in the United States. Originally completed in 1912 and raised several times afterward, the dam is one of the oldest components of the city of San Diego's municipal water system, providing between 1,600 to 15,000 acre-feet of water per year. It is one of the few facilities in the San Diego water supply system that relies entirely on local runoff.
Barrett Dam is a concrete arch-gravity dam in southern San Diego County, California in the United States, forming Barrett Lake on Cottonwood Creek. The dam is part of the city of San Diego's local water supply system.