Records of wells in sandstone and alluvial aquifers and chemical data for water from selected wells in the Navajo aquifer in the vicinity of the greater Aneth Oil Field, San Juan County, Utah
Lawrence E. Spangler
1992, Open-File Report 92-124
This report contains hydrologic data for wells finished in sandstone and alluvial aquifers in southeastern San Juan County, Utah, and chemical data for water from selected wells in the Navajo aquifer. Temperature, specific conductance, pH, and discharge data from 1989-91 for water from selected wells in all aquifers are also...
A regional structural model for gold mineralization in the southern part of the Archean Superior Province, United States
P.K. Sims, W. C. Day
P.K. Sims, L. M. H. Carter, editor(s)
1992, Bulletin 1904-M
Earthquake effects a computer animation and paper model
Tau Rho Alpha, Robert A. Page, Leslie C. Gordon
1992, Open-File Report 92-200-B
Hydrology and digital simulation of the regional aquifer system, eastern Snake River Plain, Idaho
S. P. Garabedian
1992, Professional Paper 1408-F
The occurrence and movement of water in the regional aquifer system that underlies the eastern Snake River Plain, Idaho, de- pend on the transmissivity and storage capacity of rocks that compose the geologic framework and on the distribution and amount of recharge and discharge of water within that frame- work....
Hydrogeology of the Cambrian-Ordovician aquifer system in the northern Midwest, United States with a section on ground-water quality
H. L. Young, D. I. Siegel
1992, Professional Paper 1405-B
The Cambrian-Ordovician aquifer system contains the most extensive and continuous aquifers in the northern Midwest of the United States. It is the source of water for many municipalities, industries, and rural water users. Since the beginning of ground-water development from the aquifer system in the late 1800's, hydraulic heads have...
Inversion of plane-wave electromagnetic data for layered earth models using a graphical user interface (Version 1.0)
Walter L. Anderson
1992, Open-File Report 92-518-B
Bouguer gravity anomaly and isostatic residual gravity maps of the Tonopah 1 degree by 2 degrees Quadrangle, central Nevada
Donald Plouff
1992, Miscellaneous Field Studies Map 1877-D
These gravity maps are part of a folio of maps of the Tonopah 1 degree by 2 degrees quadrangle, Nevada, prepared under the Conterminous United States Mineral Assessment Program. Each product of the folio is designated by a different letter symbol, starting with A, in the MF-1877 folio. The quadrangle...
GPRMODEL one-dimensional full waveform forward modeling of ground penetrating radar data
Michael H. Powers, S.K. Duke, A. C. Huffman, G.R. Olhoeft
1992, Open-File Report 92-532-B
Description and effects of 1988 drought on ground-water levels, streamflow, and reservoir levels in Indiana
K. K. Fowler
1992, Water-Resources Investigations Report 91-4100
Documentation of the 1988 drought in Indiana was undertaken to aid water-management agencies and planners concerned with periods of below-normal precipitation and their effect on commercial, agricultural, and residential water use. Precipitation, temperature, Palmer Drought Severity Indices, and ground- and surface-water levels from water years 1988 and 1989 were compared...
Finite-difference interblock transmissivity for unconfined aquifers and for aquifers having smoothly varying transmissivity
D.J. Goode, C.A. Appel
1992, Water-Resources Investigations Report 92-4124
More accurate alternatives to the widely used harmonic mean interblock transmissivity are proposed for block-centered finite-difference models of ground-water flow in unconfined aquifers and in aquifers having smoothly varying transmissivity. The harmonic mean is the exact interblock transmissivity for steady-state one-dimensional flow with no recharge if the transmissivity is assumed...
Inversion of plane-wave electromagnetic data for layered earth models using a graphical user interface (Version 1.0)
Walter L. Anderson
1992, Open-File Report 92-518-A
Descriptions of seismic array components; Part 3, Software modules for data conversion
W.H. Lee
1992, Open-File Report 92-598-A,B
Industrial mineral deposit models; descriptive models for three lacustrine deposit types
G. J. Orris
1992, Open-File Report 92-593
Simulation of water-table response to management alternatives, central part of the western San Joaquin Valley, California
K.R. Belitz, S.P. Phillips
1992, Water-Resources Investigations Report 91-4193
The occurrence of selenium in agricultural drainwater in the central pan of the western San Joaquin Valley, California, has focused concern on alternatives other than agricultural drains for managing shallow, poor-quality ground water. A transient, three-dimensional, finite-difference ground-water flow model was developed to assess the response of the water table...
Two-dimensional relaxation method flow model (RMFM) for hydraulic structures
B.L. Neely Jr.
1992, Water-Resources Investigations Report 92-4021
Grade and tonnage data for Climax Mo and Creede epithermal vein deposit models
D.A. Singer, Dan L. Mosier
W. David Menzie, editor(s)
1992, Open-File Report 92-248
Results of simulations by a preliminary numerical model of land subsidence in the El Paso, Texas, area
John Michael Kernodle
1992, Water-Resources Investigations Report 92-4037
Maps showing mineral resource assessment for skarn deposits of gold, silver, copper, tungsten, and iron in the Butte 1 degree by 2 degrees Quadrangle, Montana
J. E. Elliott, C. A. Wallace, G. K. Lee, J.C. Antweiler, D. J. Lidke, L. C. Rowan, W. F. Hanna, C. M. Trautwein, John L. Dwyer, S. H. Moll
1992, IMAP 2050-E
The purpose of this report is to assess the potential for undiscovered skarn deposits of gold, silver, copper, tungsten, and iron in the Butte 1 °X2° quadrangle. Other deposit types have been assessed and reports for each of the following have been prepared: Vein and replacement deposits of gold, silver,...
Modifications of the U.S. Geological Survey modular, finite-difference, ground-water flow model to read and write geographic information system files
Leonard L. Orzol, Timothy S. McGrath
1992, Open-File Report 92-50
This report documents modifications to the U.S. Geological Survey modular, three-dimensional, finite-difference, ground-water flow model, commonly called MODFLOW, so that it can read and write files used by a geographic information system (GIS). The modified model program is called MODFLOWARC. Simulation programs such as MODFLOW generally require large amounts of...
Geohydrology and water quality of stratified-drift aquifers in the lower Merrimack and coastal river basins, southeastern New Hampshire
Peter J. Stekl, Sarah M. Flanagan
1992, Water-Resources Investigations Report 91-4025
Communities in the lower Merrimack River basin and coastal river basins of southeastern New Hampshire are experiencing increased demands for water because of a rapid increase in population. The population in 1987 was 225,495 and is expected to increase by 30 percent during the next decade. As of 1987, five...
Listings of model-input values for the simulation of ground-water flow in the Mesilla Basin, Dona Ana County, New Mexico and El Paso County, Texas
P. F. Frenzel
1992, Open-File Report 91-455
Documentation of a digital spatial data base for hydrologic investigations, Broward County, Florida
R.S. Sonenshein
1992, Water-Resources Investigations Report 92-4061
Geographic information systems have become an important tool in planning for the protection and development of natural resources, including ground water and surface water. A digital spatial data base consisting of 18 data layers that can be accessed by a geographic information system was developed for Broward County, Florida. Five...
Map showing bottom topography of the Pacific Continental Margin, Strait of Juan de Fuca to Cape Mendocino
M. S. Grim, T. E. Chase, G. I. Evenden, M.L. Holmes, W. R. Normark, Pat Wilde, C.J. Fox, C. J. Lief, B. A. Seekins
1992, IMAP 2091-C
All contours, geographic outlines, and political boundaries shown on this map of the bottom topography, or bathymetry, of the Pacific continental margin between 34° and 41° N. latitudes were plotted from digital data bases in the library of the U.S. Geological Survey (USGS)-National Oceanic and Atmospheric Administration (NOAA) Joint Office...
Water resources and aquifer yields in the Charles River basin, Massachusetts
Charles F. Myette, Alison C. Simcox
1992, Water-Resources Investigations Report 88-4173
In 1984, about 66 Mgal/d (million gallons per day) of municipally supplied water was used by towns in the middle and upper Charles River basin and by the city of Cambridge in the lower basin. The Division of Water Resources of the Massachusetts Department of Environmental Management estimates that by...
Geologic map of the Pompeii Quadrangle (MTM 20057), Maja Valles region of Mars
R. A. De Hon
1992, IMAP 2203
The Pompeii quadrangle is in the northern Maja Valles between Lunae Planum to the west and Xanthe Terra to the east (fig. 1). Approximately<span class="NormalTextRun SCXW161557503...
