NewsDrop-Fall-2022

Groundwater Wells and Springs

Streams

Weather Stations

Rain Gauges

RECHARGE TO THE EDWARDS AQUIFER ORIGINATES AS PRECIPITATION OVER THE CONTRIBUTING AND RECHARGE ZONES OF THE AQUIFER, OR AS INTER-FORMATIONAL FLOW FROM ADJACENT AQUIFERS.

The EAA maintains a joint funding agreement with the U.S. Geological Survey (USGS) to provide surface recharge estimates for eight of the nine major drainage basins with streams that flow on to the Edwards Aquifer Recharge Zone. Recharge is estimated using a water-balance method that relies on precipitation and streamflow measurements across the region.

Uvalde Pool Index Well J-27.

Rain Gauge in Hays County.

This shared network of weather stations collects climatic and soil moisture data that can be applied to calculate ET values at numerous locations throughout the Edwards Aquifer Recharge Zone and Contributing Zone. These data are collected every 5 minutes, and transmitted hourly through a telemetry network, available to the public through the EAA website. Parameters collected at the weather stations include:

Texas ranch storm.

Groundwater Wells and Springs

Streams

Weather Stations

Rain Gauges

• Air Temperature • Relative Humidity • Barometric Pressure • Precipitation • Solar Radiation • Dew Point • Wind Direction

The EAA, with its partners (including Barton Springs Edwards Aquifer Conservation District, Bandera River Authority and Groundwater District, the Nueces River Authority, Cibolo Nature Center, Bat Conservation International), and private landowners, have developed a network of weather stations in our shared region. Since some water loss is due to evapo-transpiration (ET) after precipitation events, as such, ET is a valuable tool for improving recharge estimates and managing groundwater resources.

• Wind Speed • Soil Moisture

Evapotranspiration and soil moisture.