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Alexander and Maki (1988), Witthuhn and Alexander (1995), Green and others (1997), Shade and <br />others (2001), and Tipping and others (2001) published sinkhole distribution maps for Winona, <br />Olmsted, Fillmore Counties, Leroy Township, Pine and Wabasha Counties respectively. Published <br />Atlases of Washington, Dakota, and the counties of the Twin Cites Metro area contain limited <br />information on sinkhole occurrences. This karst feature database of Southeastern Minnesota has been <br />developed to allow sinkhole and other karst feature distributions to be displayed and analyzed across <br />existing county boundaries in a GIS environment. The karst inventory points are point features such as <br />sinkholes, springs, and stream sinks. <br />U.S. Geological Survey. 2015. National Water Information System: Web Interface. USGS <br />Current Conditions for Minnesota. URL: http://waterdata.usgs.gov/mn/nwis/uv? (May <br />2015) <br />This website provides data about historical and current stream conditions. Website <br />WATER SUPPLY MASTER <br />PLAN- Draft June 2015 <br />105 <br />