Books by Oahe Conservancy Sub-District (S.D.):
Books in the extended shelves:
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Oahe Conservancy Sub-District (S.D.): Geology and water resources of Brown County, South Dakota (Science Center, University of South Dakota, 1986), also by Darrell I. Leap and South Dakota Geological Survey (page images at HathiTrust)- Oahe Conservancy Sub-District (S.D.): Water resources of Hughes County, South Dakota (U.S. Dept. of the Interior, Geological Survey ;, 1986), also by Louis J. Hamilton, South Dakota Geological Survey, Hughes County (S.D.), and Geological Survey (U.S.) (page images at HathiTrust)
- Oahe Conservancy Sub-District (S.D.): Water resources of Walworth County, South Dakota (Dept. of the Interior, U.S. Geological Survey, 1987), also by Jack Kume, Lewis W. Howells, Walworth County (S.D.), Geological Survey (U.S.), and South Dakota Geological Survey (page images at HathiTrust)
Find more by Oahe Conservancy Sub-District (S.D.) at your library, or elsewhere.