Legend (Planning/GroundwaterResources)

Pollution Sensitivity Rating:Estimated vertical travel time for water-borne contaminants to enter a bedrock aquifer (0) Very High: hours to months High: weeks to years Moderate: years to decades Low: decades to a century Very Low: a century or more Bedrock within 10 Feet of Surface (1) 50Ft_Cover_poly (2) nrsfsnpy (4) Karst Bedrock Water Pollution Sensitivity: Estimated vertical travel time through near-surface materials (5) High: hours to a week Moderate: a week to weeks Low: weeks to months Very Low: months to a year PollutionSensitivity- Buried Sands Aquifer (6) Very High: Hours to Months High: Months to Years Moderate: Years to Decades Low: Decades to a Century Very Low: A Century or More Surficial geology (7) Sand, pebbly sand to mud Loamy sand, sand Silt to clay Clay to boulders Sand, loamy sand, gravel Sand and gravelly sand T1-950 ft. T2-900 ft. T3-850 ft. T4-800 ft. T5-750 ft. Sand, gravelly sand, cobbly gravel Sand, gravelly sand, cobbly gravel, collapsed Sand, gravelly sand, cobbly gravel, buried Lake sediment, diamicton, silt, clay, sand, New Ulm Fm Silt and clay, New Ulm Fm Silt and clay, collapsed Silt and clay, scoured lake sediment Sand and gravel, ridge Sand and gravel, alluvial fan Sand and gravel, buried fan Low relief till, Heiberg, Dahlen mbrs Hummocky till, Heiberg, Dahlen mbrs Collapsed till, Heiberg, Dahlen mbrs Aligned hills, Heiberg, Dahlen mbrs Streamlined till, Heiberg, Dahlen mbrs Prk Simplified surficial geology (8) Damicton (Glacial till) Sand and gravel Slope sediemnts, clay Lacustrine, silt Rock Bedrock topography polygons (9) 601-650 651-700 701-750 751-800 801-850 851-900 901-950 951-1000 Bedrock geology (10) Platteville and Glenwood Fm, undivided St. Peter Sandstone Shakopee Formation Oneota Dolomite Jordan Sandstone St. Lawrence Formation Lone Rock Formation Wonewoc Sandstone Eau Claire Fm Mount Simon Sandstone