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Methods of analysis by the U.S. Geological Survey Organic Geochemistry Research Group: Determination of triazine and phenylurea herbicides and their degradation products in water using solid-phase extraction and liquid chromatography/mass spectrometry Methods of analysis by the U.S. Geological Survey Organic Geochemistry Research Group: Determination of triazine and phenylurea herbicides and their degradation products in water using solid-phase extraction and liquid chromatography/mass spectrometry
An analytical method for the determination of 7 triazine and phenylurea herbicides and 12 of their degradation products in natural water samples using solid-phase extraction and liquid chromatography/mass spectrometry is presented in this report. Special consideration was given during the development of the method to prevent the formation of degradation products during the analysis...
Authors
Edward Alan Lee, Alex P. Strahan, Earl Michael Thurman
Method of analysis and quality-assurance practices by the U. S. Geological Survey Organic Geochemistry Research Group—Determination of four selected mosquito insecticides and a synergist in water using liquid-liquid extraction and gas chromatography/mass Method of analysis and quality-assurance practices by the U. S. Geological Survey Organic Geochemistry Research Group—Determination of four selected mosquito insecticides and a synergist in water using liquid-liquid extraction and gas chromatography/mass
A method of analysis and quality-assurance practices were developed for the determination of four mosquito insecticides (malathion, metho-prene, phenothrin, and resmethrin) and one synergist (piperonyl butoxide) in water. The analytical method uses liquid-liquid extraction (LLE) and gas chromatography/mass spectrometry (GC/MS). Good precision and accuracy were demonstrated in reagent...
Authors
L.R. Zimmerman, A.P. Strahan, E.M. Thurman
Channel-bed elevation changes downstream from large reservoirs in Kansas Channel-bed elevation changes downstream from large reservoirs in Kansas
Channel-bed elevation changes were assessed downstream from 24 large Federal reservoirs in Kansas using information from U.S. Geological Survey streamflow-gaging stations. Changes in river/stream stage associated with mean annual discharge indicated that channel-bed lowering had occurred downstream from most of the reservoirs. The net decrease in channel-bed elevation ranged from less...
Authors
Kyle E. Juracek
Ground-water quality in Quaternary deposits of the central High Plains aquifer, south-central Kansas, 1999 Ground-water quality in Quaternary deposits of the central High Plains aquifer, south-central Kansas, 1999
Water samples from 20 randomly selected domestic water-supply wells completed in the Quaternary deposits of south-central Kansas were collected as part of the High Plains Regional Ground-Water Study conducted by the U.S. Geological Survey's National Water-Quality Assessment Program. The samples were analyzed for about 170 water-quality constituents that included physical properties...
Authors
Larry M. Pope, Breton W. Bruce, Cristi V. Hansen
Status of ground-water levels and storage volume in the Wichita well field area, south-central Kansas, 1998-2000 Status of ground-water levels and storage volume in the Wichita well field area, south-central Kansas, 1998-2000
No abstract available.
Authors
Cristi V. Hansen, Walter R. Aucott
Methods of analysis by the U.S. Geological Survey Organic Geochemistry Research Group--Update and additions to the determination of chloroacetanilide herbicide degradation compounds in water using high-performance liquid chromatography/mass spectrometry Methods of analysis by the U.S. Geological Survey Organic Geochemistry Research Group--Update and additions to the determination of chloroacetanilide herbicide degradation compounds in water using high-performance liquid chromatography/mass spectrometry
An analytical method using high-performance liquid chromatography/mass spectrometry (HPLC/MS) was developed by the U.S. Geological Survey in 1999 for the analysis of selected chloroacetanilide herbicide degradation compounds in water. These compounds were acetochlor ethane sulfonic acid (ESA), acetochlor oxanilic acid (OXA), alachlor ESA, alachlor OXA, metolachlor ESA, and metolachlor...
Authors
E.A. Lee, J.L. Kish, L.R. Zimmerman, E. Thurman
Sediment deposition and trends and transport of phosphorus and other chemical constituents, Cheney Reservoir watershed, south-central Kansas Sediment deposition and trends and transport of phosphorus and other chemical constituents, Cheney Reservoir watershed, south-central Kansas
Sediment deposition, water-quality trends, and mass transport of phosphorus, nitrogen, selected trace elements, and selected pesticides within the Cheney Reservoir watershed in south-central Kansas were investigated using bathymetric survey data and reservoir bottom-sediment cores. Sediment loads in the reservoir were investigated by comparing 1964 topographic data to 1998 bathymetric...
Authors
D.P. Mau
Estimated flow-duration curves for selected ungaged sites in Kansas Estimated flow-duration curves for selected ungaged sites in Kansas
Flow-duration curves for 1968-98 were estimated for 32 ungaged sites in the Missouri, Smoky Hill-Saline, Solomon, Marais des Cygnes, Walnut, Verdigris, and Neosho River Basins in Kansas. Also included from a previous report are estimated flow-duration curves for 16 ungaged sites in the Cimarron and lower Arkansas River Basins in Kansas. The method of estimation used six unique factors of...
Authors
S.E. Studley
Water-level changes in the High Plains Aquifer, 1980 to 1999 Water-level changes in the High Plains Aquifer, 1980 to 1999
No abstract available.
Authors
Virginia L. McGuire
The 1951 floods in Kansas revisited The 1951 floods in Kansas revisited
No abstract available.
Authors
K. E. Juracek, C. A. Perry, J.E. Putnam
Summary of significant floods in the United States, Puerto Rico, and the Virgin Islands, 1970 through 1989 Summary of significant floods in the United States, Puerto Rico, and the Virgin Islands, 1970 through 1989
This volume is a compilation of significant floods that occurred throughout the United States, Puerto Rico, and the Virgin Islands during 1970 through 1989. A summary of most devastating floods according to amount of damage and lives lost is provided for each year. State-by-state compilations include a description of the general hydroclimatology and conditions that produce significant...
Authors
Charles A. Perry, Byron N. Aldridge, Heather C. Ross