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aquifer in Elk River is the Mt. Simon-Hinckley Aquifer (which is currently being used by Elk River <br />Municipal Utilities. <br />1 -~" N <br />~ ~ • <br />• o ~ <br />~~ o <br />~o n ~ a o ~ Elk River <br />ne o <br />• <br />0 <br />~ ~~ ~ ~ ~ <br />ors ~ <br />o `~ <br />o v <br />• o '., <br />o +^, <br />'o <br />0 0 ,~ <br />o _ ~~Q <br />G roundwater Use 2005 a~~ <br />(Mllliun Gallons <br />o n is o <br />• io zo ~ <br />• 20-50 <br />• <br />• so ~s 6 ~ • <br />• ~s-iao <br />! ' 100 - 500 • <br />© 500 1 ,000 ~ <br />> 1 ,000 t <br />5 0 5 10 15 Miles <br />n <br />0 <br />+`L1Y~ <br />• ~ <br />• <br />0 <br />~.- <br />0 0 <br />U <br />•~L <br />~• r~r~~7 <br />Figure 9 Groundwater Pumping in the Grea[er Twin Cities Area: 2005 <br />The Eau Claire Formation overlies the Mt Simon-Hinckley Aquifer in most of Elk River (see Figure <br />3). In the northern quarter of the City, north to Zimmerman, west to Big Lake, and north into <br />unincorporated parts of Sherburn County, the ML Simon-Hinckley Aquifer is overlain by glacial <br />P:A.Npls\23 NNVIA2371105 Water tiupply ll[ernative Smdy\FinalDeliverablasVAlten!s[ives_Report_tinal.doc i~ <br />