Lake Travis | |
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![]() Aerial view of Lake Travis in 2018 | |
Location | Travis / Burnet counties, northwest of Austin, Texas |
Coordinates | 30°23′31″N97°54′24″W / 30.39194°N 97.90667°W |
Lake type | Hydroelectric reservoir |
Primary inflows | Colorado River |
Primary outflows | Colorado River |
Basin countries | United States |
Surface area | 18,930 acres (7,660 ha) |
Max. depth | 210 ft (64 m) |
Water volume | 1,130,000 acre⋅ft (1.39 km3) |
Shore length1 | 270 mi (434 km) |
Surface elevation | 681 ft (208 m) |
1 Shore length is not a well-defined measure. |
Lake Travis is a reservoir on the Colorado River in central Texas in the United States. It is named in honor of William B. Travis. [1]
Serving principally as a flood-control reservoir, Lake Travis' historical minimum to maximum water height change is nearly 100 feet. [2] Following the 2018 Llano River flood, Lake Travis saw a 20-foot depth increase within a single 24-hour period of time. [3] With 30 square miles of surface area, Lake Travis has the largest storage capacity of the seven reservoirs known as the Highland Lakes, and stretches 65 miles (105 km) upriver from western Travis County (near Lago Vista, Texas) in a highly serpentine course into southern Burnet County to Max Starcke Dam, southwest of the town of Marble Falls. Besides being used for flood control and as a water supply, the lake is also used for electrical power generation and recreation.
The Pedernales River, a major tributary of the Colorado River, flows into the lake from southwestern Travis County.
The reservoir was formed in 1942 by the construction of Mansfield Dam on the western edge of Austin, Texas by the Lower Colorado River Authority (LCRA), and was built specifically to contain floodwaters in a flash-flood prone region. During its construction, after a severe flood in July 1938, the height of the dam was raised to add storage capacity for floodwaters. [4] [5]
Regularly scheduled ferry service between Point Venture and the south side of Hurst Creek began in April 1971, operated by Point Venture Development Co. The trip took 20 minutes and was the only inland ferry service in Texas at the time. [6] [7]
On September 5, 2020, a boat parade took place in support of Donald Trump. The Travis County Sheriff's office reported that they had received multiple calls involving boats in distress, and that several boats had sunk. [8] The weather was calm, but the boats generated significant wake as they began to move together, which subsequently sank at least five boats. [9]
Lake Travis is well known for its outdoor recreation opportunities, including fishing, boating, swimming, scuba diving, picnicking, camping, and zip lining. [10] Hippie Hollow Park, located near the eastern end of Lake Travis, is the only legal clothing optional park in Texas. Lake Travis is generally considered one of the clearest lakes in Texas. It is a vital water supply for the nearby city of Austin, Texas and the surrounding metropolitan area.
In a ranking of Texas lakes by accidental fatalities, Lake Travis was in first place in 2011 and tied for second place for total deaths from 2000–2015. [11] [12]
Six people drowned in Lake Travis in 2018, out of 29 total boating deaths reported across Texas that year. [13]
Lake Travis has been stocked with several species of fish intended to improve the utility of the reservoir for recreational fishing. Fish present in Lake Travis include largemouth bass, guadalupe bass, white bass, striped bass, catfish and sunfish.
In spring 2008 there were several reports of leeches residing in Lake Travis. The leeches are generally harmless to humans but can be a nuisance. [14]
Lake Travis is considered "full" (at maximum desired capacity) when the lake's water level is at 681 feet (208 m) above mean sea level (msl). Above 681 feet (208 m), flood control gates at Mansfield Dam are opened under the direction of the U.S. Army Corps of Engineers. [15]
The level of the lake can vary dramatically—with an over 96-foot range between its historical high and low—depending on the amount of rainfall in the Colorado River basin upstream. [16] The historic high level on the lake was 710.4 feet (216.5 m) above msl on December 25, 1991, a little less than four feet below the dam's top/spillway at 714 feet (218 m) above msl. The historic low was 614.2 feet (187.2 m) above msl on August 14, 1951.
The extreme drought of 2008–2009 brought the lake to its fourth lowest level at 626.09 feet (190.83 m) above msl in November 2009. The second lowest level was 615.02 feet (187.46 m) above msl on November 8, 1963. [17] During the 2010–13 Southern United States drought, levels went as low as 618 feet, making it the third lowest level ever. [18] The LCRA, a public utility whose responsibilities include the management of Lake Travis, makes water level reports available on the internet. [19] In April 2016, the lake returned to its full capacity at 681 ft.
Lake Travis serves as the primary flood control reservoir of the Highland Lake chain. The LCRA, under advisement from the U.S. Army Corps of Engineers, is responsible for floodgate operations at Mansfield Dam. Ideally, this is done in a time-delayed fashion after a major rainfall so as to either mitigate or outright prevent downstream flooding which otherwise would have been both immediate and extreme without the dam's presence. As Lake Travis levels increase during major floods, floodgate operations are conducted to protect property around Lake Travis as well as the dam itself.
While the dam's physical design assists in its own protection during floods, extensive spillway operations, a worst-case scenario which has not happened in the lake's history, could undermine the dam's base and affect its overall integrity. Under such conditions, operations are primarily intended to protect the dam, and lake water may be released to the dam's full, 24-floodgate capacity—regardless of downstream effects—to prevent the catastrophic loss of the dam. [20] Including its hydroelectric generators but not the spillway, at 681 feet above msl the dam's total maximum discharge capacity is more than 130,000 cubic feet per second (cfs); a bit under one million gallons per second. [21] Rates of discharge increase as water levels/pressures increase.
The Lower Colorado River Authority (LCRA) is a nonprofit public utility created in November 1934 by the Texas Legislature. LCRA's mission is to enhance the lives of the Texans it serves through water stewardship, energy and community service. LCRA provides public power, manages the lower Colorado River, builds and operates transmission lines, owns public parks, and offers community services.
Lake Austin, formerly Lake McDonald, is a water reservoir on the Colorado River in Austin, Texas. The reservoir was formed in 1939 by the construction of Tom Miller Dam by the Lower Colorado River Authority. Lake Austin is one of the seven Highland Lakes created by the LCRA, and is used for flood control, electrical power generation, and recreation.
Mansfield Dam is a dam located across a canyon at Marshall Ford on the Colorado River, 13 miles (21 km) northwest of Austin, Texas. The groundbreaking ceremony occurred on February 19, 1937, with United States Secretary of the Interior Harold L. Ickes attending. The dam was a joint project by the Lower Colorado River Authority (LCRA) and the United States Bureau of Reclamation, with partial funding provided by the Public Works Administration. Brown and Root, headed by James E. Walters, Sr., was the prime contractor. The dam was completed in 1941. Originally called Marshall Ford Dam, the name was changed in 1941 in honor of United States Representative J.J. Mansfield. The reservoir behind Mansfield Dam is named Lake Travis. The dam is owned and operated by the LCRA.
The Texas Highland Lakes are a chain of fresh water reservoirs in Central Texas formed by dams on the lower Colorado River. The Texas Colorado River winds southeast from West Texas to Matagorda Bay and the Gulf of Mexico.
Lake Lyndon B. Johnson is a reservoir on the Colorado River in the Texas Hill Country about 45 miles northwest of Austin. The reservoir was formed in 1950 by the construction of Granite Shoals Dam by the Lower Colorado River Authority (LCRA). The Colorado River and the Llano River meet in the northern portion of the lake at Kingsland.
Inks Lake is a reservoir on the Colorado River in the Texas Hill Country in the United States. The reservoir was formed in 1938 by the construction of Inks Dam by the Lower Colorado River Authority. Located near Burnet, Texas, the lake serves to provide flood control in tandem with Lake Buchanan and features the smallest hydroelectric power plant on the Highland Lakes chain. Inks Lake was named for Roy B. Inks, one of the original board members of the Lower Colorado River Authority, and serves as a venue for outdoor recreation, including fishing, boating, swimming, camping, and picnicking.
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{[short description|Reservoir in Bastrop County, Texas, United States}}
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