Groundwater temperatures in the Eastern Snake River Plain were studied to understand the aquifer's flow direction, thickness, and geothermal potential. The area has high heat flow, but most of it moves underground towards major springs. Deep boreholes showed high thermal gradients under the aquifer, indicating heat flow in certain rocks. Groundwater in the aquifer flows actively, removing over half of the geothermal heat. By analyzing temperature data from 250 wells, researchers created a map showing cold and warm zones in the aquifer. Cold zones are linked to water from valleys, while warm zones suggest geothermal activity or slow groundwater movement.