Walker, Alfred C.Text includes information about generalized stratigraphic sequence of the rocks in the Blanchard Basin and quality of underground water.Map side also contains legend and explanation of map symbols."Prepared by ALFRED C. WALKER, Geologist, Ohio Division of Water, from data compiled by Lawrence R. Brunstetter".Scale bar lower center.TIFFhttps://hdl.handle.net/1811/502ec00d-2890-4482-b490-7f0f0dfd104fengOhio. Division of WaterPublicSequence stratigraphyGroundwaterRiversWater qualityMap of Blanchard River Basin (lower portion) showing availability of underground waterMapsBlanchard RiverOhioThe Ohio State University