Southern Red River Valley Regional Hydrogeologic Assessment

To order report or download PDF and GIS files for Part A: MGSexternal link icon.

To download GIS data for Part B: Index of GIS layers

PDF files for Part B PDF icon. :

Number: RHA-3

Included Counties: Clay, Norman, and Wilkin
Parts of: Becker, Grant, Mahnomen, Otter Tail, Stevens, and Traverse

Published in two parts:


Part A - Geology

Date: 1995

Scale: 1:200,000

Publisher: Minnesota Geological Survey


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

For more information: MGS County Geologic Atlas Program external link


Part B - Hydrogeology

Date: 2000

Scale: 1:200,000

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


  • Plate 3 - Surficial hydrogeology
  • Plate 4 - Sensitivity of surficial aquifers to pollution