Hydrogeology and Ground-Water Quality of Confined Aquifers in Buried Valleys inRock County, Minnesota and Minnehaha County, South Dakota

摘要

This report describes the availability and quality of ground water in confinedglacial and bedrock aquifers present within Quaternary and Cretaceous deposits filling buried valleys incised in the Sioux Quartzite surface in Rock County in southwestern Minnesota. Bedrock aquifers discussed in this report include undifferentiated Cretaceous aquifers and the Split Rock Creek aquifer. The objectives of the report are to: (1) describe the areal extent and thickness of confined glacial and bedrock aquifers present in buried valleys, (2) describe the water-bearing and water-yielding characteristics of the aquifers, and (3) describe the water-quality characteristics of the aquifers.