Water Budget Science in Texas

Science Center Objects

A water budget is an accounting of hydrologic components of the water cycle, transfers between the components, and their relative contributions within a water system. Water budgets help define how much water is available, how much water is used, where the water comes from, and at what rate water is replenished or consumed. In its simplest form, a water budget defines the amount of water entering and leaving a water system. The USGS Texas Water Science Center (TXWSC) provides data and information about water-budget components that are needed to manage water resources in Texas. Visit the links below for more information on our data and science.

Basic components of water budgets are precipitation, evapotranspiration, surface-water and groundwater flow into and out of the watershed or aquifer, change in surface-water and groundwater storage, and human withdrawals and interbasin transfers.



TXWSC has expertise in water budget science applications, including, but not limited to: 

  • Modeling analysis to estimate water-budget components under different climate and water-use scenarios
  • Quanitifying potential changes in hydrologic budgets due to vegetative land-cover changes at a watershed scale.
  • Estimating groundwater recharge using statistical regression techniques 
  • Monitoring evapotranspiration rates to evaluate how changes in land cover and soil moisture content may change water budgets
  • Determining groundwater sources, recharge, discharge, and mixing zones
  • Collecting streamflow data.

Servicing the evapotranspiration station at the huisache removal site, Texas

Servicing the evapotranspiration station at the huisache removal site, Texas. (Public domain.)



Coastal Lowlands Regional Groundwater Availability Study (CLAS) 

Evapotranspiration Monitoring at Huisache Removal Site

Hydrogeologic Atlas for Fort Bliss

Hydrogeologic Framework of Gaines, Terry, and Yoakum Counties

Hydrologic Monitoring of Medina and Diversion Lakes, San Antonio Area

Red River Focus Area Study

Upper Rio Grande Basin Focus Area Study