Agenda - Council - 05/26/2026 - Laserfiche WebLink

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(Figure 8 in Appendix D). Potentiometric surfaces of this units are depicted on Figures 7 in Appendix D for the Tunnel City and Figure 9 in Appendix D for the Wonewoc Sandstone. Potentiometric surfaces were created by the Minnesota Geologic Survey and provide a rough estimate for water elevations for a proposed well within these units and their groundwater flow direction. The Metropolitan Council generally describes the productivity of the Tunnel City — Wonewoc Aquifer as variable. Yields tend to be moderate to low with some of the highest yields reported where bedrock units are highly fractured. 5.1.2.3 Mt. Simon -Hinckley Aquifer The Mount Simon -Hinckley Aquifer is generally described by the Metropolitan Council as a high to moderate yield aquifer. New high -capacity wells are generally not permitted by the Minnesota Department of Natural Resources as use has been restricted by Minnesota Law, therefore it is not discussed in this report in greater detail. 5.1.3 Ramsey Municipal Wells The City of Ramsey wellfields are comprised of 8 wells. Wells 1 and 2 are located in the southeastern portion of city limits, while Wells 3 through 8 are located in the south-central portion of the City. The City of Ramsey currently receives all of its potable water from the Tunnel City- Wonewoc aquifer. The well locations are depicted on Figure 1 in Appendix D. These wells are detailed in the table below. Table 10 — Ramsey Well Data e nique Date No. Well No. Constructed Total Aquifer Depth (ft) Casing' Casing Depth Diameter (ft) (in) 1 161441 1984 Tunnel City Group 323 243 14 2 416183 1987 Tunnel City Group 320 240 14 3 580306 1997 Tunnel City- Wonewoc 345 222 30 x 24 4 580313 1998 Tunnel City- Wonewoc 321 191 30 x 24 5 593672 2000 Tunnel City- Wonewoc 316 215 30x24 6 706840 2005 Tunnel City- Wonewoc 390 282 30 x 24 7 743832 2007 Tunnel City- Wonewoc 332 216 30 x 24 8 743833 2007 Tunnel City- Wonewoc 354 245 30 x 24 FEASIBILITY STUDY RAMSY 154354 Page 16