Groundwater is often referred to as an invisible resource, hidden beneath our feet. Groundwater wells—the infrastructure used to access groundwater—are small, distributed, and lost among landscapes. By contrast, our surface water infrastructure is large and visible—reservoirs that support water supply and recreation, dams, and . In this talk, Debra Perrone reveals the results of a five-year research project to record the location and construction details of millions of groundwater wells. The research provides vital insights into the haves and have nots of water and identifies strategies to minimize the impacts of groundwater depletion. Series: "GRIT Talks" [Science] [Show ID: 39278]