Publications
These publications are written or co-authored by Central Midwest Water Science Center personnel in conjuction with their work at the USGS and other government agencies. They include USGS reports, journal articles, conference proceedings, and published abstracts that are available in the USGS Publications Warehouse.
Filter Total Items: 946
Hydrogeologic and agricultural-chemical data for the South Skunk River alluvial aquifer at a site in Story County, Iowa, 1992-93
A reconnaissance study was conducted during 1992-93 to collect background hydrogeologic and agricultural-chemical data for the South Skunk River alluvial aquifer near Ames, Iowa. Observation wells were drilled to characterize the surficial geologic materials of a field-scale study site and to provide locations for collecting waterlevel and agricultural-chemical data. Walnut Creek, a tributary to t
Authors
Robert C. Buchmiller
Hydrologic data from the lower Cedar River Basin, Iowa, 1989-91
Hydrologic data were collected from May 1989 through July 1991 from the Cedar River and the adjacent alluvial aquifer. The data were collected during various flow regimes of the river to evaluate the movement of agricultural chemicals between surface water and ground water. Water-quality samples from 34 surface-water sites and 95 ground-water sites were analyzed for 11 herbicides, 2 dealkylated at
Authors
P.M. Schulmeyer, K.K. Barnes, P. J. Squillace
Herbicides and metabolites in surface and ground water in the midwestern United States
No abstract available.
Authors
D. A. Goolsby, E.M. Thurman, D.W. Kolpin, M. T. Meyer
Effect of the Cedar River on the quality of the ground-water supply for Cedar Rapids, Iowa
The Surface Water Treatment Rule under the 1986 Amendment to the Safe Drinking Water Act requires that public-water supplies be evaluated for susceptibility to surface-water effects. The alluvial aquifer adjacent to the Cedar River is evaluated for biogenic material and monitored for selected water-quality properties and constituents to determine the effect of surface water on the water supply for
Authors
P.M. Schulmeyer
Occurrence of herbicides and metabolites in surface water, ground water, and rainwater in the midwestern United States
No abstract available.
Authors
D. A. Goolsby, E.M. Thurman, D.W. Kolpin, William A. Battaglin
Environmental and hydrologic setting of the Ozark Plateaus study unit, Arkansas, Kansas, Missouri, and Oklahoma
The environmental and hydrologic setting of the Ozark Plateaus National Water-Quality Assessment (NAWQA) study unit and the factors that affect water quality are described in this report. The primary natural and cultural features that affect water- quality characteristics and the potential for future water-quality problems are described. These environmental features include climate, physio- graphy
Authors
James C. Adamski, James C. Petersen, David A. Freiwald, Jerri V. Davis
Flood volumes in the upper Mississippi River basin, April 1 through September 30, 1993
Previous maximum flows on many streams and rivers were exceeded during the flood of 1993 in the upper Mississippi River Basin. Not only were peak discharges exceeded at many streamflow-gaging stations, but flood volumes were significantly higher than previous maximums. Rainfall amounts that were greater than 50 inches were recorded in parts of Kansas, Missouri, and Iowa from April 1 through Septem
Authors
Rodney E. Southard
Postflood occurrence of selected agricultural chemicals and volatile organic compounds in near-surface unconsolidated aquifers in the upper Mississippi River basin, 1993
The historic stream flooding and intense rainfall across the upper Mississippi River Basin during summer 1993 had an immediate effect on near-surface unconsolidated aquifers by raising the water levels closer to the land surface . The objective of this study was to determine if this flooding also had immediate effects on groundwater quality . Water samples were collected during September and Octob
Authors
Dana W. Kolpin, E. Michael Thurman
A regional monitoring network to investigate the occurrence of agricultural chemicals in near-surface aquifers of the midcontinental USA
Previous state and national surveys conducted in the mid-continental USA have produced a wide range in results regarding the occurrence of agricultural chemicals in groundwater. At least some of these differences can be attributed to inconsistencies between the surveys, such as different analytical reporting limits. The US Geological Survey has designed a sampling network that is geographically a
Authors
D.W. Kolpin, D. A. Goolsby