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Page 1914, results 47826 - 47850

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Methods for the determination of organic substances in water and fluvial sediments
R.L. Wershaw, M. J. Fishman, R. R. Grabbe, L. E. Lowe, editor(s)
1987, Techniques of Water-Resources Investigations 05-A3
This manual describes analytical methods used by the U.S. Geological Survey to determine organic substances in water, water-suspended-sediment mixtures, and bottom material. Some of the analytical procedures yield determinations for specific com-pounds, whereas others provide a measure of the quantity of groups of compounds present in the sample. Examples of...
Selected hydrologic and physical properties of Mesozoic formations in the Upper Colorado River Basin in Arizona, Colorado, Utah, and Wyoming: Excluding the San Juan Basin
J. F. Weigel
1987, Water-Resources Investigations Report 86-4170
Data for hydrologic and physical properties of Mesozoic formations in the Upper Colorado River Basin, excluding the San Juan Basin, have been collected by government agencies, private industry, property owners, and other sources. These data were compiled and analyzed so that they would be available for use by hydrologists, earth...
Preliminary assessment of water quality in the alluvial aquifer of the Puerco River basin, Northeastern Arizona
R. H. Webb, G.R. Rink, D. B. Radtke
1987, Water-Resources Investigations Report 87-4126
The quality of groundwater in the alluvial aquifer of the Puerco River basin, northeastern Arizona, was evaluated in order to assess potential contamination from uranium mining and milling operations in New Mexico. A total of 14 wells and 1 spring were sampled to determine if a contaminant plume of radionuclides...
Overview of surface-water quality in Ohio's coal regions
Susan Westover, Michael Eberle
1987, Water-Resources Investigations Report 84-4061
This report is designed to provide the nontechnical audience with some of the results of an 'Assessment of Water Quality in Streams Draining Coal-Producing Areas in Ohio,' by Christine L. Pfaff and others (published by the U.S. Geological Survey in 1981). The purpose of the assessment was to document the...
Ground-water flow in the Navajo sandstone in parts of Emery, Grand, Carbon, Wayne, Garfield, and Kane counties, southeast Utah
Emanuel Weiss
1987, Water-Resources Investigations Report 86-4012
A finite-difference model of one layer was constructed to determine groundwater flow directions and magnitudes in the Navajo Sandstone of southeast Utah. Hydraulic head data, hydraulic conductivity data, precipitation data, and other data collected in the area were used in constructing and calibrating the model. Sensitivity of the model to...
Water use in Wisconsin, 1985
B.R. Ellefson, K.S. Rury, J. T. Krohelski
1987, Open-File Report 87-699
An inventory of water use in Wisconsin is essential for appraising current and future water-resource needs of the State. The U.S. Geological Survey has collected and published national water-use data every 5 years since 1950. Sources of data in these reports have not always been well documented, and the methods...
Potentiometric surface of the upper Floridan aquifer in Florida and in parts of Georgia, South Carolina, and Alabama, May 1985
Peter W. Bush, G. Lynn Barr, John S. Clarke, Richard H. Johnston
1987, Water-Resources Investigations Report 86-4316
A map, constructed as a part of the Floridan Regional Aquifer-System Analysis (RASA), shows the potentiometric surface of the Upper Floridan aquifer for May 1985. It is based on measurements of water level or artesian pressure made in about 2 ,500 wells during the period May 13 to 24, 1985....
Flood characteristics of the Buffalo River at Tyler Bend, Arkansas
Braxtel L. Neely
1987, Water-Resources Investigations Report 87-4180
The Buffalo River is located in the Ozark Mountains in north-central Arkansas. Tyler Bend is on the Buffalo River about 1.5 miles upstream from U.S. Highway 65. The National Park Service is developing several recreational park sites along this scenic river. The magnitude, frequency, duration and velocities of floods are...
Regional Aquifer-System Analysis Program of the US Geological Survey; bibliography, 1978-86
J.B. Weeks, Ren Jen Sun
1987, Water-Resources Investigations Report 87-4138
The Regional Aquifer-System Analysis Program of the U.S. Geological Survey was initiated in 1978. The purpose of this program is to define the regional geohydrology and establish a framework of background information on geology, hydrology, and geochemistry of the Nation 's important aquifer systems. This information is needed to develop...
Techniques for estimating flood-depth frequency relations for streams in West Virginia
J.B. Wiley
1987, Water-Resources Investigations Report 87-4111
Multiple regression analyses are applied to data from 119 U.S. Geological Survey streamflow stations to develop equations that estimate baseline depth (depth of 50% flow duration) and 100-yr flood depth on unregulated streams in West Virginia. Drainage basin characteristics determined from the 100-yr flood depth analysis were used to develop...