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N~i~THWEST S~?UTHEAST <br />ESTI • <br />e <br />L WILL ELK RIVER HAVE ADEQUATE WATER AVAILABLE? <br />ELK RIVER MINNEAPpLIS <br />--------~.___ ST CROIX RIVER <br />,,,, ~, <br />,;~ <br />~... <br /> <br />-.~rw.- ; <br />0 glacial drift {sand, gravel. clay} <br />0 Platteville Formation {limestone} <br />~ St. Peter Sandstone <br />C] Prairie du Chien group {limestone} <br />~ Jordan Sandstone <br />~ St. Lawrence Formation (shale} <br />(~~] Francon"ra Fm. {sandstone & limestone} <br />0 Ironton & Galesville Sandstones <br />[~] Eau Claire Formation {shale} <br />~ Mt. Simon ~ Hinckley Fms. {sandstone} <br />Precambrian Crystalline Bedrock <br />• <br />• <br />• <br /> <br />F- <br />~4,:~;, . <br />.,, "~. <br />`. <br />+~ ~^. <br />a <br />FAULTS <br />