Upper Mississippi Valley Karst Aquifers

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Karst Hydrogeologic Investigation of Trout Brook

Joel T. Groten, U.S. Geological Survey
E. Calvin Alexander Jr., University of Minnesota - Twin Cities

Human Impacts on Water Quality in Coldwater Spring, Minneapolis, Minnesota

Sophie M. Kasahara, Department of Civil, Environmental, and Geo-Engineering, University of Minnesota
E. Calvin Alexander Jr., Earth Sciences, University of Minnesota
Scott C. Alexander, Earth Sciences, University of Minnesota

Hydrologic and Geochemical Dynamics of Vadose Zone Recharge in a Mantled Karst Aquifer: Results of Monitoring Drip Waters in Mystery Cave, Minnesota

Daniel H. Doctor, US Geological Survey
E. Calvin Alexander Jr., University of Minnesota - Twin Cities
Roy Jameson
Scott C. Alexander, University of Minnesota - Twin Cities

Conduit Flow in the Cambrian Lone Rock Formation, Southeast Minnesota, U.S.A.

John D. Barry, Minnesota Department of Natural Resources
Jeffrey A. Green, Minnesota Department of Natural Resources
Julia R. Steenberg, Minnesota Geological Survey

Using Nitrate, Chloride, Sodium, and Sulfate to Calculate Groundwater Age

Kimm Crawford, Crawford Environmental Services
Terry Lee, Olmsted County

Karst Spring Cutoffs, Cave Tiers, and Sinking Stream Basins Correlated to Fluvial Base Level Decline in South-Central Indiana

Garre A. Conner, Pangea Geoservices

Driftless Area Karst of Northwestern Illinois and its Effects on Groundwater Quality

Samuel V. Panno, Illinois State Geological Survey
Walton R. Kelly, University of Illinois at Urbana-Champaign

Seeps and Springs at a Platteville “Observatory” on the River Bluffs

BJ Bonin, Minnesota Department of Natural Resources
Greg Brick, Minnesota Department of Natural Resources
Julia R. Steenberg, Minnesota Geological Survey