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Page 4860, results 121476 - 121500

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Geochemistry of altered and mineralized rocks from the Morey and Fandango Wilderness Study Areas, northern Hot Creek Range, Nye County, Nevada
J. T. Nash, D. A. John, M.J. Malcolm, Paul H. Briggs, J.G. Crock
1986, Open-File Report 86-410
The U.S. Geological Survey and the St. Johns River Water Management District are investigating the hydrogeology of the Floridan aquifer system. An essential element of this investigation is the design and construction of a monitor well network in the lower saline water-bearing zone which occurs at about 2,000 ft below...
Potentiometric map of the Cockfield Aquifer in Mississippi, fall 1984
Daphne Darden
1986, Water-Resources Investigations Report 86-4042
This map, the second in a series for the Cockfield aquifer in Mississippi, follows a map that delineated the 1980 potentiometric surface of the aquifer. This water level map is based on water level measurements made in about 80 wells in the Cockfield aquifer in the fall of 1984. The...
Percentage change in saturated thickness of the High Plains Aquifer, west-central Kansas, 1950 to average 1984-86
Barbara J. Dague
1986, Water-Resources Investigations Report 86-4365
Continuing studies are being made in west-central Kansas to provide up-to-date information that will aid in the management of groundwater for irrigation. The results are presented of the sixth in a series of studies that used a statistical technique called kriging, to produce hydrologic maps. The kriging technique interpolates water...
Techniques for estimating streamflow characteristics in the Eastern and Interior coal provinces of the United States
Kim L. Wetzel, J.M. Bettandorff
1986, Water Supply Paper 2276
Techniques are presented for estimating various streamflow characteristics, such as peak flows, mean monthly and annual flows, flow durations, and flow volumes, at ungaged sites on unregulated streams in the Eastern Coal region. Streamflow data and basin characteristics for 629 gaging stations were used to develop multiple-linear-regression equations. Separate equations...
Investigation of possible effects of surface coal mining on hydrology and landscape stability in part of the Powder River structural basin, northeastern Wyoming
R. M. Bloyd, P. B. Daddow, P.R. Jordon, H. W. Lowham
1986, Water-Resources Investigations Report 86-4329
The effects of surface coal mining on the surface- and groundwater systems in a 5,400 sq mi area in the Powder River Basin, Wyoming, that includes 20 major coal mines were evaluated using three approaches: A surface water model, a landscape-stability analysis, and a groundwater model. A surface water model...
Reconnaissance of ground-water resources in the North Fork Gunnison River basin, southwestern Colorado
D. J. Ackerman, Tom Brooks
1986, Water-Resources Investigations Report 85-4230
Aquifers of large areal extent in the North Fork Gunnison River basin are found in the alluvium and bedrock. Alluvial aquifers yielded water with dissolved solids concentrations ranging from 43 to 2,300 mg/L. Dissolved solids concentrations of water samples from the Mesaverde Formation of Late Cretaceous age and the Dakota...
International strategic minerals inventory summary report: platinum-group metals
David M. Sutphin, Norman J. Page
1986, Circular 930-E
Major world resources of platinum-group metals are described in this summary report of information in the International Strategic Minerals Inventory {ISMI}. ISMI is a cooperative data-collection effort of earth-science and mineral-resource agencies in Australia, Canada, the Federal Republic of Germany, the Republic of South Africa, and the United States of...
Water resources of Weston County, Wyoming
M.E. Lowry, W. J. Head, J.G. Rankl, J.F. Busby
1986, Water-Resources Investigations Report 84-4079
Surface water is scarce in Weston County, Wyoming. Groundwater has been developed from rocks ranging in age from Mississippian to Holocene. Adequate supplies for domestic or stock use can be developed from wells generally less than 1,000 ft deep, except in the area underlain by a thick sequence of predominantly...
Geohydrology and potential for artificial recharge in the western part of the U.S. Marine Corps Base, Twentynine Palms, California, 1982-83
J. P. Akers
1986, Water-Resources Investigations Report 84-4119
A recent gravity survey indicates that sedimentary deposits in the Deadman Lake area of the Twentynine Palms Marine Corps Base, California, are as much as 10,500 feet thick. These deposits fill an ancient valley in the bedrock complex. This valley is alined east-west in the Surprise Spring area and north-south...
Gas-film coefficients for the volatilization of ketones from water
R. E. Rathbun, D. Y. Tai
1986, Water Supply Paper 2286
Volatilization is a significant process in determining the fate of many organic compounds in streams and rivers. Quantifying this process requires knowledge of the mass-transfer coefficient from water, which is a function of the gas-film and liquid-film coefficients. The gas-film coefficient can be determined by measuring the flux for the...
Ground water in the Long Meadow area and its relation with that in the General Sherman Tree area, Sequoia National Park, California
J. P. Akers
1986, Water-Resources Investigations Report 85-4178
Westward movement of ground water from the Long Meadow area of Sequoia National Park, California, to the General Sherman Tree area is prevented by an eastward hydraulic gradient and low fracture permeability of a granodiorite ridge separating the two areas. Clay beds present in the alluvium in the Long Meadow...
Magnitude and frequency of high flows of unregulated streams in Kansas
Paul Robert Jordan
1986, Water Supply Paper 2280
Information on high-flow magnitude and frequency is needed for hydrologic evaluation of such factors as flood-control storage and dam safety. High-flow information given in this report is for streamflows unaffected by major regulation, such as by large reservoirs. High-flow magnitude and frequency data are given for 91 streamflow-gaging stations throughout...
Hydrogeology and leachate movement near two chemical-waste sites in Oswego County, New York
H. R. Anderson, Todd S. Miller
1986, Water-Resources Investigations Report 84-4148
Forty-five observation wells and test holes were installed at two chemical waste disposal sites in Oswego County, New York, to evaluate the hydrogeologic conditions and the rate and direction of leachate migration. At the site near Oswego groundwater moves northward at an average velocity of 0.4 ft/day through unconsolidated glacial...