Groundwater pumping — especially large-scale and/or long-term pumping — has the potential to impact springs, lakes, and streams, as well as other water users. It can also create unanticipated adverse water quality effects. Studies to assess pumping impacts can be motivated by a legal claim or permitting requirement.
We characterize the complex hydrologic interactions between groundwater and surface water through monitoring and data collection, data analysis, and modeling. Our field team has experience with a wide range of groundwater and surface water sampling methods and remote sensing tools. We conduct baseline surveys of surface water resources including streams, springs, and seeps and establish monitoring protocols for evaluating impacts from proposed actions. We collect data on groundwater pumping, water level changes, water quality, and aquifer properties to characterize drawdown and water quality impacts on nearby surface water resources. We conduct pumping tests and groundwater modeling to assess the current and future capture of spring flow and/or surface water by pumping, as well as interference effects between pumping centers.