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Page 2017, results 50401 - 50425

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Water-quality data-collection activities in Colorado and Ohio; Phase I, Inventory and evaluation of 1984 programs and costs
Janet Hren, Thomas H. Chaney, J. Michael Norris, Carolyn J. Oblinger Childress
1985, Open-File Report 85-574
Pilot projects are being conducted in Colorado and Ohio to determine the extent to which existing water quality data, collected by different groups for various purposes and using different procedures, can be aggregated for use in addressing selected water quality questions of regional and national scope. The project has been...
Water resources activities in Louisiana district, fiscal year 1985
R.A. Herbert, E.A. Ellsworth
1985, Open-File Report 85-415
Water resources activities of the U.S. Geological Survey (USGS) in Louisiana consist of collecting water resources data and conducting interpretive hydrologic investigations and research. The water resources data and the results of the interpretive investigations are published or released by either the USGS or by cooperating agencies. The USGS water...
Bibliography of borehole geophysics as applied to ground-water hydrology
Ticie A. Taylor, Joyce A. Dey
1985, Circular 926
Most of the references on borehole geophysics that are relevant to ground-water hydrology are contained in this bibliography, but it does not include every reference that is available under each subject heading; the literature is much too extensive to compile a complete listing. Some of the references may appear under...
Relation between ground-water quality and mineralogy in the coal-producing Norton Formation of Buchanan County, Virginia
John D. Powell, Jerry D. Larson
1985, Water Supply Paper 2274
The geochemical processes controlling ground-water chemistry in the coal-producing strata of southwestern Virginia include hydrolysis of silicates, dissolution of carbonates, oxidation of pyrite, cation exchange, and precipitation of secondary minerals, kaolinite and goethite. Core material from the Norton Formation of the Pennsylvania Period is composed of slightly more than one-half...
A primer on trace metal-sediment chemistry
Arthur J. Horowitz
1985, Water Supply Paper 2277
In most aquatic systems, concentrations of trace metals in suspended sediment and the top few centimeters of bottom sediment are far greater than concentrations of trace metals dissolved in the water column. Consequently, the distribution, transport, and availability of these constituents can not be intelligently evaluated, nor can their environmental...
Measurement of discharge using tracers
F. A. Kilpatrick, Ernest D. Cobb
1985, Techniques of Water-Resources Investigations 03-A16
The development of fluorescent dyes and fluorometers that can measure these dyes at very low concentrations has made dye-dilution methods practical for measuring discharge. These methods are particularly useful for determining discharge under certain flow conditions that are unfavorable for current meter measurements. These include small streams, canals, and pipes...
Cost effectiveness of the stream-gaging program in South Carolina
A.C. Barker, B.C. Wright, C.S. Bennett
1985, Water-Resources Investigations Report 85-4210
The cost effectiveness of the stream-gaging program in South Carolina was documented for the 1983 water yr. Data uses and funding sources were identified for the 76 continuous stream gages currently being operated in South Carolina. The budget of $422,200 for collecting and analyzing streamflow data also includes the cost...
The Dakota aquifer near Pueblo, Colorado: Faults and flow patterns
E. R. Banta
1985, Water-Resources Investigations Report 85-4186
The Dakota Sandstone and the underlying Purgatoire Formation consisting of the Glencairn Shale and Lytle Sandstone Members form a board outcrop at the southeastern margin of the Canon City Embankment. The two formations form the Dakota aquifer, which supplies water to many domestic, stock, and irrigation wells in addition to...
Acoustic velocity meter systems
Antonius Laenen
1985, Techniques of Water-Resources Investigations 03-A17
Acoustic velocity meter (AVM) systems operate on the principles that the point-to-point upstream traveltime of an acoustic pulse is longer than the downstream traveltime and that this difference in traveltime can be accurately measured by electronic devices. An AVM system is capable of recording water velocity (and discharge) under a...
Salinity characteristics and distribution and effects of alternative plans for freshwater withdrawal, Little Manatee River estuary and adjacent areas of Tampa Bay, Florida
Mario Fernandez
1985, Water-Resources Investigations Report 84-4301
The Little Manatee River, a coastal stream that empties into Tampa Bay, Florida, may be used as a source of freshwater. Reduction of streamflow will result in upstream movement of saltwater in the stream. Data on streamflow, tide stage, and specific conductance describe the salinity distribution of the estuary. Vertical...
Chemical and isotopic characteristics of brines from three oil- and gas-producing sandstones in eastern Ohio, with applications to the geochemical tracing of brine sources
K. J. Breen, Clifford G. Angelo, Robert W. Masters, Alan C. Sedam
1985, Water-Resources Investigations Report 84-4314
Chemical and isotopic characteristics of selected inorganic constituents are reported for brines from the Berea Sandstone of Mississippian age, the Clinton sandstone, Albion Sandstone of Silurian age, and the Rose Run formation of Cambrian and Ordovician age in 24 counties in eastern Ohio. Ionic concentrations of dissolved constituents in brines...
Runoff and chemical loading in small watersheds in the Twin Cities Metropolitan Area, Minnesota
M. A. Ayers, R. G. Brown, G.L. Oberts
1985, Water-Resources Investigations Report 85-4122
Flow, rainfall, and water-quality data were collected during 1980 for 15 to 30 rainfall and snowmelt events on 6 rural and 11 urban watersheds in the Twin Cities Metropolitan Area. Event or daily flow and load models (for seven constituents) were developed and used with runoff and rainfall data for...
Water resources and effects of development in Hernando County, Florida
J. D. Fretwell
1985, Water-Resources Investigations Report 84-4320
In spite of the hill and valley terrain in the Brooksville Ridge area of Hernando County, Florida, little surface drainage occurs within the county. Recharge to the Floridan aquifer system occurs as infiltration of precipitation within the county or as ground-water flow from Sumter County to the east and Pasco...
Potential incremental seepage losses in an alluvial channel in the Rio Grande Basin, New Mexico
R.L. Gold
1985, Water-Resources Investigations Report 84-4268
A two-dimensional, digital, cross-sectional model was used to simulate seepage of water from an alluvial channel, which had the general characteristic of the Rio Grande channel, into the underlying alluvium within the reach from Cochiti Dam to Elephant Butte Reservoir. Seepage rates were determined for losing and gaining reaches, and...