As the name implies, water supply lakes are built primarily to provide a place to store water for Texas residents, communities, businesses, agriculture, industry and others who all depend on water to survive and thrive. Such lakes are especially vital during periods of drought, when other sources of water may be limited. Many of Texas’ flood control lakes serve a secondary purpose as a water storage facility. However, reservoirs designed for water supply, do not necessarily also provide flood control.
Water supply lakes within the Brazos River Authority system are lakes Possum Kingdom, Granbury and Limestone. Flood control lakes that also provide water supply for the Brazos basin include lakes Somerville, Proctor, Stillhouse Hollow, Belton, Georgetown, Granger, Aquilla and Whitney.