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: 932
Agricultural chemicals in Iowa's ground water, 1982-95: What are the trends?
The Iowa Department of Natural Resources. Geological Survey Bureau: the University of Iowa Hygienic Laboratory; and the U.S. Geological Survey (USGS) have been working together to address this question. As part of the Iowa Ground-Water Monitoring Program (IGWM). water samples have been collected from selected Iowa municipal wells since 1982. An examination of this data identified two trends: (1) c
Authors
Dana W. Koplin, George Hallberg, D. A. Sneck-Fahrer, Robert Libra
Flood of July 9-11, 1993, in the Raccoon River basin, west-central Iowa
Water-surface-elevation profiles and peak discharges for the flood of July 9-11, 1993, in the Raccoon River Basin, west-central Iowa, are presented in this report. The profiles illustrate the 1993 flood along the Raccoon, North Raccoon, South Raccoon, and Middle Raccoon Rivers and along Brushy and Storm Creeks in the west-central Iowa counties of Carroll, Dallas, Greene, Guthrie, and Polk. Water-s
Authors
D. A. Eash, B.A. Koppensteiner
Evaluation of drawdown and sources of water in the Mississippi River alluvium caused by hypothetical pumping, Muscatine, Iowa
A study was conducted to evaluate drawdown and volumetric changes in sources of water in the Mississippi River alluvium caused by hypothetical pumping. A steady-state, ground-water flow model was constructed for a previous study to simulate February 1993 hydrologic conditions, which were assumed to be an acceptable estimate of the ground-water system at equilibrium. The flow model was modified for
Authors
K.J. Lucey
Regional ground-water flow directions and spring recharge areas in and near the Fort Leonard Wood Military Reservation, Missouri
Regional ground-water flow at the Fort Leonard Wood Military Reservation (FLWMR) generally is east and west away from a regional ground-water divide towards the Big Piney River and Roubidoux Creek. Ground-water flow in the northern FLWMR is strongly affected by solution-enlarged fractures and bedding planes in the Roubidoux Formation and Gasconade Dolomite. Several large springs located on the FLW
Authors
Michael J. Kleeschulte, Jeffrey L. Imes
Herbicides and nitrates in the Iowa River alluvial aquifer prior to changing land use, Iowa County, Iowa, 1996
The Iowa River alluvial aquifer in Iowa County, Iowa (fig. 1), underlies an area of intensive agricultural activity where pesticides and nitrogen-based fertilizers are extensively used. The effects of changing land use on shallow ground-water quality in part of the Iowa River alluvial aquifer are currently being investigated as part of the U.S. Geological Survey (USGS) National Water-Quality Asses
Authors
Mark E. Savoca, Jennifer L. Tobias, Eric M. Sadorf, Trevor L. Birkenholtz
Effects of the 1993 flood on the determination of flood magnitude and frequency in Iowa
To evaluate the effects of the 1993 flood in the upper Mississippi River Basin on the determination of flood magnitude and frequency, discharges that had recurrence intervals of 10, 25, 50, and 100 years computed from data through the 1992 water year were compared with those computed from data through the 1993 water year for 62 selected streamflow-gaging stations in Iowa. On the basis of the flood
Authors
David A. Eash
Hydraulic analyses of alternative methods for reducing backwater from log jams on Locust Creek near Pershing State Park, Linn County, Missouri
No abstract available.
Authors
T.W. Alexander
Agricultural chemicals in alluvial aquifers in Missouri after the 1993 flood
Intense rains produced flooding during the spring and summer of 1993 over much of the midwestern USA including many agricultural areas of Missouri. Because of potential contamination from floodwater, an investigation was conducted to determine the changes in concentrations of agricultural chemicals in water samples from alluvial wells in Missouri after the flood. Water samples from 80 alluvial wel
Authors
D. C. Heimann, J.M. Richards, D.H. Wilkison
Hydrogeology and water quality at the St. Francois County landfill and vicinity — Southeastern Missouri, 1990–94
No abstract available.
Authors
John G. Schumacher, E. A. Hockanson
Floods of June 17, 1990, and July 9, 1993, along Squaw Creek and the South Skunk River in Ames, Iowa, and vicinity
Water-surface-elevation profiles and peak discharges for the floods of June 17, 1990, and July 9, 1993, along Squaw Creek and the South Skunk River, in Ames, Iowa, are presented in this report. The maximum flood-peak discharge of 24,300 cubic feet per second for the streamflow-gaging station on Squaw Creek at Ames, Iowa (station number 05470500) occurred on July 9, 1993. This discharge was 80 perc
Authors
R.F. Einhellig, D. A. Eash
Description of Basinsoft, a computer program to quantify drainage-basin charactersitics
No abstract available.
Authors
C.A. Harvey, D. A. Eash