Aquifer Recharge Enhancement


The hydrologic cycle has a major impact on groundwater storage, Precipitation and surface water slowly move below the ground until they are intercepted by plant roots or stopped by an impervious layer of material such as clay or shale. This process of downward migration is called groundwater recharge or percolation. Groundwater recharge is an important natural process for replenishing groundwater supplies. In some areas of the world, however, drought and overuse of groundwater for urban and rural uses have led to alarming declines. Coupled with these conditions is ongoing urban sprawl, which effectively seals potential recharge zones with paved streets, sidewalks and rooftops. Reduced recharge rates in developed areas can cause downstream flooding problems as a result of increased surface runoff. Preservation of wetlands along streams, stormwater retention ponds, and open space such as parks, golf courses, and wildlife areas can help preserve groundwater recharge zones.

In the Middle Trinity Groundwater Conservation District, the Trinity Aquifer recharges through its outcrop areas. Due to excellent aquifer characteristics, the recharge that occurs in Comanche and Erath counties contributes largely to the availability of Trinity Groundwater throughout the rest of the District.

Groundwater movement in the Trinity Aquifer is from points of recharge in aquifer outcrop areas to points of discharge. In aquifer outcrops, groundwater movement is primarily downdip towards points of discharge, either along creeks, rivers or streams or areas of significant groundwater production and withdrawal.

Information on the geologic units and their water bearing properties within Middle Trinity Groundwater Conservation District is available in the District’s Management Plan located on the District’s website at

For more information visit: TSSWCB Water Supply Enhancement Program