Vadose zone equipment and weather station at ENWRA's Firth Pilot Study Site. ENWRA uses heat-dissipation sensors, soil moisture probes, and weather stations (air and soil temperature, precipitation, humidity, wind speed, solar radiation, and potential evapotranspiration) to continuously collect data regarding groundwater recharge at each of the pilot study sites. This information contributes to understanding the volume of precipitation recharging the underlying aquifer at a specific site, how fast that recharge occurs, and the importance of vertical and horizontal flow paths.