County Geologic Atlas Program

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Printed atlases available through MGS

Upper Minnesota River Basin Regional Hydrogeologic Assessment

Number: RHA-4

Included Counties: Swift, Chippewa, Lac qui Parle, and Yellow Medicine
Parts of: Big Stone, Lincoln, Lyon, Redwood, and Renville

Published in two parts:


Part A - Geology


Date: 1999

Scale: 1:200,000

Publisher: Minnesota Geological Survey (MGS  external link)

Contents (PDF and GIS filesexternal link):

  • Plate 1 - Surficial geology
  • Plate 2 - Quaternary stratigraphy



Part B - Hydrogeology


Date: 2000

Scale: 1:200,000

Publisher: Minnesota Department of Natural Resources, Ecological and Water Resources Division


  • Plate 3 PDF icon. - Surficial hydrogeology (980 KB)
  • Plate 4 PDF icon. - Geologic sensitivity to pollution of near-surface ground water (1.18 MB)
  • GIS files