Water School

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 permit establishing Lake Granbury, click here. The DeCordova Bend Dam contains 16 computer-operated gates to pass flood water releases.

The reservoir has a surface area of 7,945 acres with 121 miles of shoreline.  Five public access areas for picnicking and fishing and four BRA-maintained boat ramps are available for recreational use.

Lake Granbury was built without use of tax dollars, financed entirely with revenues from sales of water contracts. The principal revenues used to finance the project were provided under a contract with TXU Electric Company for purchase of water for industrial use, including cooling water for a natural gas-fired steam electric power plant and the Comanche Peak Nuclear Power Plant near Glen Rose. The reservoir also furnishes raw water for municipal use in Hood and Johnson counties.




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.

water direct re-use mission subsidence district contaminants invasive plants subwatershed water planning permit xeriscape streamflow turbidity riverine organic wildlife fork maps volume precipitation corps of engineers municipal recreation biosolids tributary calcium rain authority treatment lake chlorides acre-feet system measure industrial acre-foot environment salinity granbury habitat mitigation PAM drinking water aerobic lake level marsh quality possum kingdom gate sewage potable meta tag dissolved solids septic system sludge spring water code insurance employment sanitation map brackish contract kayak bay classification golden algea camping inland depth subsidence inundated electric companies costs farming water plants riparian cfs bed and banks hydrologic cycle agriculture gage E coli clarity electricity speaker mgd fishing infection estuary stream consumption impound dam hunting channel pollutants planning flood pool boating lake levels industry water treatment Board solids storage chlorine agricultural appropriation canoe gulf hydropower surface water hydrilla water rights minerals use anaerobic indirect re-use landscaping river golden algae corps watershed pharmaceuticals effluent parasite fish kill fertilizer water quality well evaporation wetlands water cycle taste USGS environmental spillway wetland soil legislation septic beneficial use algae reservoir water use conservation releases wastewater mainstem ground water streamflow jobs salt emergency use flood control lake water clarity medicine sediment hydrology lawn limestone gas rights water supply climate runoff monitor aquifer lakes watercourse drought canoeing groundwater allens creek reservoir filter oxygen main stem E. coli smell flood bottled water drilling TCEQ dock basin reservoirs supply governance