Lee Davisson is a water resource and water quality consultant with over 20 years of surface and groundwater characterization experience in California and Nevada. Experience ranges from Central Valley groundwater, Sacramento-San Joaquin Delta water quality, southern Cascades spring sources, Los Angeles and Orange County reclaimed water management, and Mojave and Nevada desert regional groundwater systems. He specializes in geochemical methods for understanding recharge sources and residence times of groundwater and how they relate to groundwater sustainability and management.