WashU Libraries

Kalkhoff, Stephen J

Agricultural chemicals in ground and surface water in a small watershed in Clayton County, Iowa, 1988-91 / by Stephen J. Kalkhoff and Bryan D. Schaap ; prepared in cooperation with Iowa Department of Natural Resources (Geological Survey Bureau)

Kalkhoff, Stephen J., author

Agricultural chemicals in ground and surface water in a small watershed in Clayton County, Iowa, 1988-91 / by Stephen J. Kalkhoff and Bryan D. Schaap

Kalkhoff, Stephen J., author

Brine contamination of ground water and streams in the Baxterville Oil Field area, Lamar and Marion counties, Mississippi / by Stephen J. Kalkhoff

Kalkhoff, Stephen J., author

Brine contamination of shallow ground water and streams in the Brookhaven Oil Field, Lincoln County, Mississippi / by Stephen J. Kalkhoff

McCarthy, Kathleen A., author

Environmental settings of the South Fork Iowa River Basin, Iowa, and the Bogue Phalia Basin, Mississippi, 2006-10 / by Kathleen A. McCarthy, Claire E. Rose, and Stephen J. Kalkhoff

Kalkhoff, Stephen J., author

Hydrologic and water-quality conditions in the Cedar River alluvial aquifer, Linn County, Iowa, 1990-2019 / by Stephen J. Kalkhoff

Porter, Stephen D

Influence of natural factors on the quality of midwestern streams and rivers / by Stephen D. Porter, Mitchell A. Harris, and Stephen J. Kalkhoff

Kalkhoff, Stephen J

National Water-Quality Assessment Program--Eastern Iowa Basins [electronic resource]

Garrett, Jessica D., author

Nutrient concentrations, loads, and yields in the Middle Iowa River Basin, Iowa / by Jessica D. Garrett and Stephen J. Kalkhoff

Scribner, Elisabeth A

Occurrence of isoxaflutole, acetamide, and triazine herbicides and their degradation products in 10 Iowa rivers draining to the Mississippi and Missouri Rivers, 2004 [electronic resource] / by Elisabeth A. Scribner, Michael T. Meyer, and Stephen J. Kalkhoff

Kalkhoff, Stephen J., author

Quality of water and bottom material of streams that drain potential lignite mining areas in the outcrop area of the Wilcox Group in Mississippi / by Stephen J. Kalkhoff ; prepared in cooperation with the Mississippi Department of Natural Resources, Bureau of Geology

Kolpin, Dana W., author

Time of travel and dispersion in a selected reach of Roberts Creek, Clayton County, Iowa / by D.W. Kolpin and S.J. Kalkhoff ; prepared in cooperation with the Iowa Department of Natural Resources, Geological Survey Bureau

Kalkhoff, Stephen J., author

Transport of nitrogen and phosphorus in the Cedar River Basin, Iowa and Minnesota, 2000-15 / by Stephen J. Kalkhoff; prepared in cooperation with the City of Cedar Rapids, Iowa

Water quality in the eastern Iowa basins, Iowa and Minnesota, 1996-98 / by Stephen J. Kalkhoff ... [et al.]

Kalkhoff, Stephen J., author

Water quality in the eastern Iowa basins, Iowa and Minnesota, 1996-98 / by Stephen J. Kalkhoff [and seven others]

Kalkhoff, Stephen J

Water quality of Corydon Reservoir before implementation of agricultural best-management practices in the basin, Wayne County, Iowa, September 1990 to September 1991 / by Stephen J. Kalkhoff ; prepared in cooperation with Iowa Department of Natural Resources (Geological Survey Bureau), U.S. Environmental Protection Agency, U.S. Department of Agriculture

Kalkhoff, Stephen J., author

Water quality of Corydon Reservoir before implementation of agricultural best-management practices in the basin, Wayne County, Iowa, September 1990 to September 1991 / by Stephen J. Kalkhoff ; prepared in cooperation with Iowa Department of Natural Resources (Geological Survey Bureau), U.S. Environmental Protection Agency, U.S. Department of Agriculture