Publications
Publications
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Assessment of nonpoint-source contamination of the High Plains Aquifer in south-central Kansas, 1987 Assessment of nonpoint-source contamination of the High Plains Aquifer in south-central Kansas, 1987
Ground-water quality was assessed in a 5,000-square-mile area of the High Plains aquifer in south-central Kansas that is susceptible to nonpoint-source contamination from agricultural and petroleum-production activities. Of particular interest was the presence of agricultural chemicals and petroleum-derived hydrocarbons that might have been associated with brines that formerly were...
Authors
John O. Helgesen, Lloyd E. Stullken, A. T. Rutledge
Water Resources Data, Kansas, Water Year 1993 Water Resources Data, Kansas, Water Year 1993
No abstract available.
Authors
C.O. Geiger, D.L. Lacock, D.R. Schneider, M.D. Carlson, B.J. Dague
Reduction of nonpoint source contamination of surface water and groundwater by starch encapsulation of herbicides Reduction of nonpoint source contamination of surface water and groundwater by starch encapsulation of herbicides
The loss of the preemergent herbicide atrazine in surface runoff from experimental field plots growing corn (Zea mays L.) was significantly reduced using a starchencapsulated formulation versus a conventional powdered formulation. Field edge losses of starch-encapsulated atrazine were described as following a Rayleigh distribution totaling 1.8% of applied herbicide compared to...
Authors
M. S. Mills, E.M. Thurman
Organonitrogen herbicides in the lower Kansas River basin Organonitrogen herbicides in the lower Kansas River basin
Atrazine, which is not readily removed by conventional treatment, may cause problems for water utilities in agricultural areas. To help managers, planners, and regulators determine when and where surface waters are likely to be adversely affected by organonitrogen herbicides, the authors analyzed various data on the distribution of these compounds in the lower Kansas River basin. They...
Authors
John K. Stamer, Ronald B. Zelt
Herbicides and nitrate in near-surface aquifers in the midcontinental United States, 1991 Herbicides and nitrate in near-surface aquifers in the midcontinental United States, 1991
The occurrence and distribution of selected herbicides, atrazine metabolites, and nitrate were determined for near-surface aquifers (within 50 feet of land surface) in the corn- and soybean-producing region of the midcontinental United States. The study region included all or parts of Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South...
Authors
Dana W. Kolpin, Michael R. Burkart, E. Michael Thurman
Concentrations of selected herbicides, two triazine netabolites, and nutrients in storm runoff from nine stream basins in the Midwestern United States, 1990-92 Concentrations of selected herbicides, two triazine netabolites, and nutrients in storm runoff from nine stream basins in the Midwestern United States, 1990-92
No abstract available.
Authors
Elisabeth A. Scribner, Donald A. Goolsby, E. Michael Thurman, Michael T. Meyer, Michael L. Pomes
Water-level changes in the High Plains aquifer -- Predevelopment to 1992 Water-level changes in the High Plains aquifer -- Predevelopment to 1992
Changes in water levels in the High Plains aquifet underlying parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming result from the variability of precipitation, land use, and ground-water withdrawals. From the beginning of development of the High Plains aquifer to 1980, water levels declined throughout much of the area; the declines exceeded 100...
Authors
J. T. Dugan, T. J. McGrath, R. B. Zelt
Determination of alachlor and its sulfonic acid metabolite in water by solid-phase extraction and enzyme-linked immunosorbent assay Determination of alachlor and its sulfonic acid metabolite in water by solid-phase extraction and enzyme-linked immunosorbent assay
No abstract available.
Authors
D.S. Aga, E.M. Thurman, M.L. Pomes
Geohydrologic systems in Kansas: Physical framework of the lower aquifer unit in the western interior plains aquifer system Geohydrologic systems in Kansas: Physical framework of the lower aquifer unit in the western interior plains aquifer system
The purpose of this Hydrologic Investigations Atlas is to provide a description of the principal geohydrologic systems in the Upper Cambrian through Lower Cretaceous rocks in Kansas.
Authors
C. V. Hansen, J. M. Spinazola, R. J. Wolf
Concentrations of triazine herbicides in the unsaturated zone in western Harvey County, Kansas, spring and fall 1992-93 Concentrations of triazine herbicides in the unsaturated zone in western Harvey County, Kansas, spring and fall 1992-93
To assess the potential transport of triazine herbicides into the Equus Beds aquifer, soil samples were collected from the unsaturated zone at 27 dryland and 30 irrigated sites in western Harvey County, Kansas. All sites were sampled at a depth of 4 to 6 feet (that is, immediately below the root zone) during March and October-November 1992 and March and October-November 1993. During the...
Authors
Kyle E. Juracek
Formation and transport of deethylatrazine and deisopropylatrazine in surface water Formation and transport of deethylatrazine and deisopropylatrazine in surface water
No abstract available.
Authors
E.M. Thurman, M. T. Meyer, M. S. Mills, L.R. Zimmerman, C. A. Perry, D. A. Goolsby