Effect of reduced industrial pumpage on the migration of dissolved nitrogen in an outwash aquifer at Olean, Cattaraugus County, New York
M. P. Bergeron
1987, Water-Resources Investigations Report 85-4082
A quasi-three-dimensional digital groundwater flow model of a shallow outwash aquifer system at Olean, New York, was developed to study the effects of several pumping alternatives on groundwater flow and stream seepage. Nitrogen compounds have contaminated the aquifer in an industrial park in North Olean. Pumping from seven industrial production...
Effect of Niagara power project on ground-water flow in the upper part of the Lockport Dolomite, Niagara Falls area, New York
Todd S. Miller, William M. Kappel
1987, Water-Resources Investigations Report 86-4130
The Niagara River Power Project near Niagara Falls, N.Y., has created recharge and discharge areas that have modified the direction of groundwater flow east and northeast of the falls. Before construction of the power project in 1962, the configuration of the potentiometric surface in the upper part of the Silurian...
Computation of rapidly varied unsteady, free-surface flow
D.R. Basco
1987, Water-Resources Investigations Report 83-4284
Many unsteady flows in hydraulics occur with relatively large gradients in free surface profiles. The assumption of hydrostatic pressure distribution with depth is no longer valid. These are rapidly-varied unsteady flows (RVF) of classical hydraulics and also encompass short wave propagation of coastal hydraulics. The purpose of this report is...
Gravity profiles across the Uyaijah Ring structure, Kingdom of Saudi Arabia
M. E. Gettings, G. E. Andreasen
1987, Open-File Report 87-500
Three detailed gravity profiles across parts of the Uyaijah ring structure have been completed using an average station spacing of 260 M (giving a total of 217 gravity stations) and level surveys for elevation control. When combined with regional gravity-anomaly data, the profiles are adequate for construction of a structural...
Two-dimensional finite element models of the variation of heat flow with depth caused by refraction at a low conductivity graben
R. W. Saltus, A.H. Lachenbruch
1987, Open-File Report 87-618
Bouguer gravity anomaly and isostatic residual gravity maps of the Walker Lake 1 degree by 2 degrees Quadrangle, California and Nevada
Donald Plouff
1987, Miscellaneous Field Studies Map 1382-E
The accompanying gravity anomaly maps are part of a folio of maps of the Walker Lake 1° by 2° quadrangle, California and Nevada, prepared under the Conterminous United States Mineral Assessment Program. The quadrangle encompasses an area of about 19,500 km2 along and to the east of the east flank...
Surface-water hydrology of the Western New York Nuclear Service Center Cattaraugus County, New York
William M. Kappel, W. E. Harding
1987, Water-Resources Investigations Report 85-4309
Precipitation data were collected from October 1980 through September 1983 from three recording gages at the Western New York Nuclear Service Center, and surface water data were collected at three continuous-record gaging stations and one partial-record gage on streams that drain a 0.7 sq km part of the site. Seepage...
Surface-water-quality assessment of the Yakima River basin, Washington: Project description
S. W. McKenzie, J. F. Rinella
1987, Open-File Report 87-238
In April 1986, the U.S. Geological Survey began the National Water Quality Assessment program to: (1) provide a nationally consistent description of the current status of water quality, (2) define water quality trends that have occurred over recent decades, and (3) relate past and present water quality conditions to relevant...
Regional study of the Castle Hayne Aquifer of eastern North Carolina
W.L. Lyke, R. W. Coble
1987, Open-File Report 87-571
The Castle Hayne aquifer is an eastward sloping and thickening wedge of limestone and sandstone, located in a 12,500 sq mi area in the eastern part of North Carolina. The Castle Hayne aquifer is the major source of freshwater for much of coastal North Carolina where the aquifers underlying the...
The principle of superposition and its application in ground-water hydraulics
Thomas E. Reilly, O. Lehn Franke, Gordon D. Bennett
1987, Techniques of Water-Resources Investigations 03-B6
The principle of superposition, a powerful mathematical technique for analyzing certain types of complex problems in many areas of science and technology, has important applications in ground-water hydraulics and modeling of ground-water systems. The principle of superposition states that problem solutions can be added together to obtain composite solutions. This...
Seismicity map of the state of North Carolina
B.G. Reagor, C. W. Stover, S. T. Algermissen
1987, Miscellaneous Field Studies Map 1988
This map is one of a series of seismicity maps produced by the U. S. Geological Survey that show earthquake data of individual states or groups of states at the scale of 1:1,000,000. This map shows only those earthquakes with epicenters located within the boundaries of North Carolina, even though...
Application of the precipitation-runoff model in the Warrior coal field, Alabama
Robert E. Kidd, C. R. Bossong
1987, Water Supply Paper 2306
A deterministic precipitation-runoff model, the Precipitation-Runoff Modeling System, was applied in two small basins located in the Warrior coal field, Alabama. Each basin has distinct geologic, hydrologic, and land-use characteristics. Bear Creek basin (15.03 square miles) is undisturbed, is underlain almost entirely by consolidated coal-bearing rocks of Pennsylvanian age (Pottsville...
Geohydrology and simulated effects of withdrawals on the Miocene aquifer system in the Mississippi Gulf Coast area
D. M. Sumner, B. E. Wasson, S. J. Kalkhoff
1987, Water-Resources Investigations Report 87-4172
Intense development of the Miocene aquifer system for water supplies along the Mississippi Gulf Coast has resulted in large water level declines that have altered the groundwater flow pattern in the area. Water levels in some Miocene aquifers have declined about 2 ft/year since 1940; declines exceed 100 ft (80...
Rb-Sr isotopic studies of postorogenic granites from the eastern Arabian Shield, Kingdom of Saudi Arabia
J. S. Stuckless, Kiyoto Futa
1987, Open-File Report 87-507
Thirteen Rb-Sr whole-rock isochrons for postorogenic granites of the eastern Arabian Shield yield ages that range from 567 to 617 Ma, a similar range to that previously determined ages for leucocratic, evolved granites in that region. The dated plutons range widely in terms of degree of petrologic evolution from primitive...
Seismicity map of the state of Indiana
C. W. Stover, B.G. Reagor, S. T. Algermissen
1987, Miscellaneous Field Studies Map 1974
This map is one of a series of seismicity maps produced by the U. S. Geological Survey that show earthquake data of individual states or groups of states at the scale of 1:1,000,000. This map shows only those earthquakes with epicenters located within the boundaries of Indiana, even though earthquakes...
Ground-water hydrology of the Toppenish Creek basin, Yakima Indian Reservation, Washington
J.A. Skrivan
1987, Water-Resources Investigations Report 82-4010
A groundwater flow model was constructed for the Toppenish Creek basin aquifer system in eastern Washington. Flow was simulated in three aquifer units: (1) the confined old valley fill and shallow basalt (unit 2); (2) the underlying primary basalt (unit 3); and (3) the deep basalt (unit 4). Water levels...
Description and comparison of selected models for hydrologic analysis of ground-water flow, St. Joseph River basin, Indiana
J. G. Peters
1987, Water-Resources Investigations Report 86-4199
The Indiana Department of Natural Resources (IDNR) is developing water-management policies designed to assess the effects of irrigation and other water uses on water supply in the basin. In support of this effort, the USGS, in cooperation with IDNR, began a study to evaluate appropriate methods for analyzing the effects...
Surface-geophysical investigations in Melton Valley, Oak Ridge Reservation, Tennessee
Patrick Tucci
1987, Water-Resources Investigations Report 87-4184
Surface geophysical methods were found to be valuable for refining knowledge of the geohydrology of Melton Valley, an area used for burial of low-level radioactive waste at the Oak Ridge Reservation in Tennessee. The valley is characterized by locally complex geologic structures in lithologies of interbedded shale and limestone. Radionuclides...
Tidal-flow, circulation, and flushing changes caused by dredge and fill in Tampa Bay, Florida
Carl R. Goodwin
1987, Water Supply Paper 2282
Tampa Bay, Florida, underwent extensive physical changes between 1880 and 1972 because of construction of causeways, islands, channels, and shoreline fills. These changes resulted in a progressive reduction in the quantity of tidal water that enters and leaves the bay. Dredging and filling also changed the magnitude and direction of...
Surface water-quality assessment of the Kentucky River basin, Kentucky: Project description
K. D. White, J. L. Smoot, J. K. Jackson, Anne F. Choquette
1987, Open-File Report 87-234
In April 1986, the U.S. Geological Survey began the National Water Quality Assessment Program, which at present (1987) is in a pilot phase in which assessment concepts and approaches are being tested and modified to prepare for full implementation of the program in the future. Seven pilot projects (four surface...
Cost effectiveness of the U.S. Geological Survey's stream-gaging program in Wisconsin
J.F. Walker, L.L. Osen, P.E. Hughes
1987, Water-Resources Investigations Report 86-4125
This report presents the results of a three-step evaluation of the stream-gaging program in Wisconsin. First, data uses and funding sources were identified for the 89 continuous-record gaging stations operated during the 1984 water year. Next, alternative methods of streamflow estimation were examined for three stations. A flow-routing model was...
Analytically-derived sensitivities in one-dimensional models of solute transport in porous media
D.S. Knopman
1987, Open-File Report 86-605
Analytically-derived sensitivities are presented for parameters in one-dimensional models of solute transport in porous media. Sensitivities were derived by direct differentiation of closed form solutions for each of the odel, and by a time integral method for two of the models. Models are based on the advection-dispersion equation and include...
Investigation of techniques to estimate rainfall-loss parameters for Illinois
L.S. Weiss, A. L. Ishii
1987, Water-Resources Investigations Report 87-4151
An attempt was made by the U.S. Geological Survey to develop parameter-estimation techniques for two rainfall-loss computation methods used in the U.S. Army Corps of Engineers ' flood-hydrograph model (HEC-1). Six rainfall-loss parameters were investigated - four for the Exponential Loss-Rate method and two for the Initial and Uniform Loss-Rate...
Hydraulic analyses of water-surface profiles in the vicinity of the Coamo Dam and Highway 52 bridge, southern Puerto Rico: Flood analyses as related to the flood of October 7, 1985
K. G. Johnson, Ferdinand Quinones-Marquez, Ralph Gonzalez
1987, Water-Resources Investigations Report 87-4039
The magnitude, frequency and extent of the flood of October 7, 1985 at the Rio Coamo in the vicinity of the Coamo Dam and Highway 52 bridge in southern Puerto Rico, were investigated. The observed flood profiles were used to calibrate a step-backwater model. The calibrated model was then used...
Surface water-quality assessment of the lower Kansas River basin, Kansas and Nebraska; project description
J. K. Stamer, P. R. Jordan, R. A. Engberg, J. T. Dugan
1987, Open-File Report 87-105
In 1986 the U.S. Geological Survey began a National Water-Quality Assessment Program to: (1) provide nationally consistent descriptions of the current status of water quality for a large, diverse, and geographically distributed part of the Nation 's surface water resources; (2) where possible, define trends in water quality; and (3)...
