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deposits. In these areas, the Mt. Simon-Hinckeey Aquifer is recharged (aad these areas may be <br />important recharge areas for the aquifer as a whole). Some stream loss from the Mississippi River to <br />the Mt. Simon-Hinckley Aquifer may take place in this area. <br />Figure l0 Areas oI Increased Pumping Between 1990 and 2005 <br />The Mt. Simon-Hinckley Aquifer has proven [o be productive in the Elk River area. Some of Elk <br />River's wells have begun to experience lowered hydraulic head (water levels in wells) in response to <br />pumping during [he summer. The Mt. Simon-Hinckley Aquifer is locally recharged by downward <br />leakage from the overlying glacial drift (with is mostly permeable sand and gravel outwash) and <br />areas where the Eau Claire Formation is thinner and/or fractured to produce secondary permeability <br />features. <br />N:AMpis\23 MNV71A237110~Wamr Supply NtemaGve SmdyV~innlDeliveeables\Al~emm~vev_Rapon FinuLduc l8 <br />