Ian Jones is a hydrogeologist with the Texas Water Development Board, and has more than 20 years of experience in different aspects of hydrogeology. He has professional experience in regional groundwater flow modeling and groundwater geochemistry. Jones has constructed or been involved in the construction of many of the groundwater availability models in Texas. He also has experience in using groundwater geochemistry—including isotopes—to evaluate geochemical processes taking place in and recharge to an aquifer. Jones has authored numerous articles and reports on groundwater and geochemical modeling and use of isotopes to evaluate and quantify recharge.