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BRAZOS RIVER BASIN
Hood County is located in the upper watershed portion of the Brazos River Basin, specifically featuring the main stem of the river impounded by Lake Granbury and the DeCordova Bend Dam. The Brazos and Paluxy rivers are the main water sources in Hood county.
WHAT IS A WATERSHED?
"A watershed is an area of land across, through or under which water flows on its way to a single common point in a stream, river, lake or ocean. Watersheds include not only waterbodies such as streams and lakes, but also the surrounding lands that contribute water to the system during and after precipitation as runoff.
Water quality and quantity can have significant effects on the function and health of a watershed. Conversely, activities in the watershed can have dramatic impacts on water quality and quantity. Watersheds can be extremely large, covering many thousands of acres and are often divided into smaller “subwatersheds” and even smaller “micro watersheds” for the purpose of study and management."
Source: BRA-Lake Granbury Watershed Protection Plan
Sub-Watershed
Source: Texas Watershed Viewer- TPWD
Source Map: Brazos River Authority
Trinity Aquifer
"The watershed overlies the Trinity Aquifer which is a water-bearing geologic formation. The Trinity Aquifer is classified by the Texas Water Development Board (TWDB) as a major aquifer and furnishes small to moderate amounts of groundwater to entities in 17 counties. Hood County is in the recharge zone of the aquifer where development has resulted in significant declines in the water table."
Source: BRA- Lake Granbury Watershed Protection Plan, 2.2.1 Water Resources
Brazos River Basin
"The Brazos Basin is the second largest river basin by area within Texas. The basin's namesake river was named Los Brazos de Dios, "the arms of God," by early Spanish explorers. The Brazos River flows from the confluence of its Salt and Double Mountain forks in Stonewall County to the Gulf of Mexico. It is the state's third longest river and has the largest average annual flow volume of any river in the state."
One of the issues in this basin is the increasing demand on surface water resources in the upper basin as groundwater supplies decline, particularly in the Ogallala Aquifer, which has historically supplied the majority of water there
Source: Texas water Development Board "Brazos RIver Basin"
Brazos & Paluxy
"The Brazos and Paluxy rivers are the main water sources in Hood county. The Brazos River flows in a winding pattern north to south; the Paluxy flows from the northwest to southeast across the southwest corner of the county. Lake Granbury, a man-made reservoir of 8,700 acres on the Brazos River, was completed in 1969. The vegetation features bluestems, Indian grass, and gramas, mesquite, oaks, and junipers."
Source: Texas Almanac- Hood County
Authored By: Rhonda L. Callaway