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Geology topics

R. B. Leonard

Publications and source records attributed to R. B. Leonard.

7 recordsLinked to original sources
USGS1997

Geohydrology and simulation of steady-state flow conditions in regional aquifer systems in Cretaceous and older rocks underlying Kansas, Nebraska, and parts of Arkansas, Colorado, Missouri, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming

Three regional aquifers systems are the basis for describing the geohydrology of bedrock aquifers in the central United States. The Great Plains aquifer system, composed of Lower Cretaceous sandstone, generally contains brackish water (1,000 to 10,000 milligrams per liter dissolved solids); the Western Interior Plains aquifer system of lower Paleozoic rocks contains saline water and is laterally adjacent to the freshwater-bearing Ozark Plateaus aquifer system composed of rocks of the same age.

Professional Paper↗
USGS1996

Analysis of regional aquifers in the central Midwest of the United States in Kansas, Nebraska, and parts of Arkansas, Colorado, Missouri, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming: Summary

Large quantities of ground water are available for use from three regional aquifer systems in the central Midwest of the United States. Parts of the lowermost aquifer contain nearly immobile brine and may be hydrologically suitable for material storage or waste disposal. Results of numerical modeling and geochemical analyses confirm general concepts of ground-water flow in the regional aquifer systems.

Arkansas, Colorado, Kansas, Missouri, Nebraska, Ne↗
USGS1979

Hydrologic data from selected wells in the Helena Valley, Lewis and Clark County, Montana

Hydrologic data were collected during 1978-79 to aid in evaluating the hydrologic conditions in shallow aquifers beneath the Helena Valley, Montana. The locations of 52 shallow test wells augered during the study are shown on a map at a scale of 1:48,000. Periodic water-level measurements and water-quality analyses for the test holes are listed in tables. Water temperature, specific conductance, and nitrate concentration are given for water samples collected from 98 domestic wells, and chemical analyses are included for 11 domestic and irrigation wells. In addition, water-level drawdown and recovery data are plotted on graphs for five pumped wells and three observation wells. (Kosco-USGS)

Open-File Report↗
USGS1967

Kansas River, Bonner Springs to mouth - Degradation of channel

This report has been prepared at the request of the Kansas Water Resources Board under provisions of a cooperative agreement with the U.S. Geological Survey dated July 1, 1966, for water-resources investigations. The Kansas Water Resources Board has been advised of a recent serious degradation of the low-water channel of the lower Kansas River below Bonner Springs and has requested information on the following: (1) magnitude of change in regimen of the stream, (2) causes for the change including sand removal, change in sediment load, or change in the regimen of the Missouri River downstream, and (3) future change. The requested information, presented herein, is based on the streamflow, stage, and sediment data collected by the U.S. Geological Survey; stage, sediment, and profile data collected by the U.S. Corps of Engineers; and sand removal data provided by the State of Kansas. -Photographs of the reach are shown in plates 1 and 2, and locations of the various features are shown in figure 1.

Kansas↗