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Water School

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Why do lake levels fluctuate?

Despite a common misconception, there are very few “constant level lakes,” and none operated by the Brazos River Authority.  A constant level lake is one that is artificially managed to remain at a specific level essentially by using another source of water to replenish losses due to evaporation, etc.Several factors can affect a lake’s level and only some are within human control. The chief factor that is not controllable is the impact of climate.  Evaporation is a constant, natural part of t...
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What is Possum Kingdom Lake?

What is Possum Kingdom Lake?

Possum Kingdom Lake, located on the main stem of the Brazos River northwest of Fort Worth, was the first water supply reservoir constructed in the Brazos River basin. Located in Young, Palo Pinto, Stephens, and Jack counties, the construction of the Morris Sheppard Dam was begun in 1938 and completed in 1941 with the aid of the Works Progress Administration Program.Possum Kingdom Lake covers an area of 16,716 acres with 219 miles of shoreline. The reservoir holds approximately 750,000 acre feet ...
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What is Lake Granbury?

What is Lake Granbury?

DeCordova Bend Dam and Lake Granbury were constructed by the Brazos River Authority and are maintained and operated by the BRA as a source of water supply.Construction of the project began in December 1966 and was completed in September 1969. The reservoir provides 129,011 acre-feet of storage capacity for conservation of flood and storm waters to meet requirements of municipalities, industries, agriculture and mining.  The reservoir has a permitted yield of 64,712 acre feet.  To view the state ...
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Where is Lake Limestone?

Where is Lake Limestone?

Lake Limestone, located on the upper Navasota River in Limestone, Robertson and Leon counties, is a water supply reservoir built by the Brazos River Authority in 1978. Construction of the reservoir was made possible through the sale of water to Texas Electric Utilities to be used by their lignite-burning electric plants in the area.  To view a copy of the Lake Limestone state permit, click here.Water from the reservor is supplied for similar use at a NRG steam-electric plant just east of Lake Li...
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What is a spillway?

A spillway part of a dam that is designed to allow water to flow freely over the dam during floods. Spillways may be used on dams with floodgates as an additional means to control release of water during flooding.  A spillway may also be used as the main area of water release from a dam, allowing water to flow through the spillway only when the reservoir is full.
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Why do you charge a fee to build a dock on the reservoir?

The on-water faciltiy fee to place a dock on a BRA reservoir basically allows the permit holder to build and maintain a permanent structure over BRA property (the lake bed). It also gives the BRA the ability to ensure that the docks that are constructed on the reservoir are safe. The permit fee is not a tax, but a one-time fee.  There are no longer annual fees to maintain a dock on a BRA reservoir.  For an on-water facility permit application, click here.
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If I own lakeside property, can I build a dock on a BRA-owned reservoir?

Lakeside property owners can build docks on a BRA-owned reservoir if they complete an On-Water Facility Permit application and pay the relevant fees for inspection of the facility plans and completed work.  Lake regulations set requirements property owners must meet when building a dock.  Details on these regulations may be found in Section 7 of the BRA regulations.Permit applications may be obtained at each reservoir's office or by going to the appropriate website: Possum Kingdom, Granbury and ...
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Why are there federal reservoirs in the Brazos River basin?

The US Army Corps of Engineers (Corps) operates eight flood control reservoirs within the Brazos River basin that, through a contract with the federal government, also serve as water supply impoundments for the Brazos River Authority system of reservoirs.Lakes Proctor, Whitney, Aquilla, Belton, Stillhouse Hollow, Georgetown, Granger, and Somerville store water for use by municipal, agricultural, industrial and mining use.Similar to the Authority’s three water supply reservoirs, water contracts ...
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What is Allens Creek Reservoir?

Allens Creek Reservoir is a planned water storage lake permitted for construction on Allens Creek, a tributary of the Brazos River, in Austin County. The permit to build the lake was originally issued to Houston Lighting and Power (Reliant Energy) in 1974 by the Texas Natural Resource Conservation Commission, now known as the Texas Commission on Environmental Quality (TCEQ).The reservoir was originally to have served as a cooling lake for a nuclear power plant. When Reliant Energy abandoned plan...
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The information provided on this site is intended as background on water within the Brazos River basin. There should be no expectation that this information is all encompassing, complete or in any way examines every aspect of this very complex natural resource.

If you have questions about a post or would like additional information, please contact us or call 888-922-6272.

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