Douglas J. Schnoebelen

• Bathymetric mapping, sediment quality, and water quality of Lake Delhi, Iowa, 2001-02
• Environmental setting and natural factors and human influences affecting water quality in the White River Basin, Indiana
• Environmental setting and natural factors and human influences affecting water quality in the White River Basin, Indiana
• Selected hydrogeologic data for the regional carbonate bedrock and glacial aquifers in eastern and central Indiana
• Selected hydrogeologic data from the Cedar Rapids area, Benton and Linn counties, Iowa, October 1992 through March 1996
• Selected nutrients and pesticides in streams of the eastern Iowa basins, 1970-95
• Water-quality assessment of the eastern Iowa basins