In March 2018, the Wetlands Geology Section at the Illinois State Geological Survey (ISGS) began a study to characterize the hydrogeology and assess stream bank erosion at a parcel along Franklin Creek in Franklin Creek State Park, Lee County, Illinois at the request of the Illinois Department of Natural Resources (IDNR). The parcel, known as Site 5, was selected by IDNR for restoration under the Natural Resources Damage Assessment Program (NRDA). As part of the planning process the ISGS was asked to evaluate site conditions to inform potential options for habitat restoration (e.g., prairie, wetlands, stream). The purpose of this report is to identify the hydrogeologic conditions of the site and to recommend restoration strategies. The data presented in this report include descriptions of geologic materials, measurements of surface water levels, and groundwater levels, collected by the ISGS from March 2018 to December 2019.
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