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Enhanced Aquifer Recharge (EAR) Update Overview & Conceptual Site Model
Citation:
Ross, R., D. Beak, R. Neill, J. Groves, J. Fields, AND T. Tandy. Enhanced Aquifer Recharge (EAR) Update Overview & Conceptual Site Model. Enhanced Aquifer Recharge Stakeholder Update, Ada, OK, June 09, 2021.
Impact/Purpose:
This webinar will inform EPA staff, EPA policymakers, and external stakeholders’ of the types of information obtained from transient electrical resistivity imaging, and potential issues with the implementation of long-term research of EAR systems and research in a rural epikarst and karst setting.
Description:
Enhanced Aquifer Recharge (EAR) conveys overland flow into the subsurface for storage, potential reuse, and to augment water supplies. This presentation will convey our current knowledge of the geologic and hydrogeologic setting at the EAR Research Site in Pontotoc County, OK, and present our evolving conceptual site model (CSM) of surface water recharge via karst features and the tools used in the process. The movement of water through epikarst to groundwater using EAR is poorly understood. This research will examine the traditional geologic and hydrogeologic tools used to characterize the movement of water through the vadose and saturated zones as well as the use of surface and borehole geophysical techniques applied before and after overland flow events. One of the goals of this EPA research is to understand the temporary storage and movement of groundwater and potential contaminants through the epikarst and karst portions of the aquifer. This presentation will present initial interpretations of the CSM with implications on water movement as well as potential future characterization and monitoring needs.