Preliminary geologic map of the Little Piute Mountains, San Bernardino County, California
Keith A. Howard, Michael L. Dennis, Karl E. Karlstrom, Geoffrey A. Phelps
1995, Open-File Report 95-598
Introduction The Little Piute Mountains in the eastern Mojave Desert expose a series of folds and thrust faults involving metamorphosed Paleozoic strata (Miller and others, 1982; Stone and others, 1983). Detailed mapping of these structures was undertaken to help elucidate regional Mesozoic structural evolution. Earlier geologic maps were prepared by...
Geologic map of the Hayward fault zone, Contra Costa, Alameda, and Santa Clara counties, California: A digital database
R. W. Graymer, D. L. Jones, E. E. Brabb
1995, Open-File Report 95-597
The Hayward is one of three major fault zones of the San Andreas system that have produced large historic earthquakes in the San Francisco Bay Area (the others being the San Andreas and Calaveras). Severe earthquakes were generated by this fault zone in 1836 and in 1868, and several large...
Water-quality assessment of the Rio Grande Valley study unit, Colorado, New Mexico, and Texas -- Analysis of selected nutrient, suspended-sediment, and pesticide data
S. K. Anderholm, M.J. Radell, S. F. Richey
1995, Water-Resources Investigations Report 94-4061
This report contains a summary of data compiled from sources throughout the Rio Grande Valley study unit of the National Water-Quality Assessment program. Information presented includes the sources and types of water-quality data available, the utility of water-quality data for statistical analysis, and a description of recent water-quality conditions and...
Water-quality assessment of the upper Snake River Basin, Idaho and western Wyoming — Summary of aquatic biological data for surface water through 1992
Terry R. Maret
1995, Water-Resources Investigations Report 95-4006
The 35,800-square-mile upper Snake River Basin in eastern Idaho and western Wyoming was one of 20 areas selected for water-quality study under the National Water-Quality Assessment Program. As part of the initial phase of the study, data were compiled to describe the current (1992) and historical aquatic biological conditions of...
Hydrogeology and analysis of ground-water withdrawal in the Mendenhall-D'Lo area, Simpson County, Mississippi
E. W. Strom, W. T. Oakley
1995, Water-Resources Investigations Report 95-4013
The cities of Mendenhall and D'Lo, located in Simpson County, rely on ground water for their public supply and industrial needs. Most of the ground water comes from an aquifer of Miocene age. A study began in 1991 to describe the hydrogeology, analyze effects of ground-water withdrawal by making a...
Geologic map of the Littlefield Quadrangle, northern Mohave County, Arizona
George H. Billingsley
1995, Open-File Report 95-559
The Littlefield 7.5' quadrangle lies in the extreme northwestern corner of Mohave County, Arizona (fig. 1). Elevations range from about 536.5 m (1,760 ft) at the Virgin River (south-central edge of quadrangle) to 975 m (3,200 ft) in the Beaver Dam Mountains (northeastern corner of quadrangle). Interstate Arizona Highway 15...
Maps showing gas-hydrate distribution off the east coast of the United States
William P. Dillon, Kristen L. Fehlhaber, Dwight F. Coleman, Myung W. Lee, Deborah R. Hutchinson
1995, Miscellaneous Field Studies Map 2268
These maps present the inferred distribution of natural-gas hydrate within the sediments of the eastern United States continental margin (Exclusive Economic Zone) in the offshore region from Georgia to New Jersey (fig. 1). The maps, which were created on the basis of seismic interpretations, represent the first attempt to map...
Simulated ground-water flow and sources of water in the Killbuck Creek Valley near Wooster, Wayne County, Ohio
K. J. Breen, A.L. Kontis, G.L. Rowe, R.J. Haefner
1995, Water-Resources Investigations Report 94-4131
The stratified-drift aquifer in the 3,000-ft (feet)-wide and 100-ft-deep buried valley of Killbuck Creek near Wooster in northeastern Ohio was studied. The stratified drift with adjacent sandstone and shale bedrock produce a system of ground-water flow representative of the western part of the glaciated north-eastern United States. The stratified-drift aquifer...
Analysis of steady-state flow and advective transport in the eastern Snake River Plain aquifer system, Idaho
D. J. Ackerman
1995, Water-Resources Investigations Report 94-4257
Quantitative estimates of ground-water flow directions and traveltimes for advective flow were developed for the regional aquifer system of the eastern Snake River Plain, Idaho. The work included: (1) descriptions of compartments in the aquifer that function as intermediate and regional flow systems, (2) descriptions of pathlines for flow originating...
Mineral and energy resources of the Roswell Resource Area, East-Central New Mexico
Susan B. Bartsch-Winkler, Alessandro J. Donatich, editor(s)
1995, Bulletin 2063
The sedimentary formations of the Roswell Resource Area have significant mineral and energy resources. Some of the pre-Pennsylvanian sequences in the Northwestern Shelf of the Permian Basin are oil and gas reservoirs, and Pennsylvanian rocks in Tucumcari Basin are reservoirs of oil and gas as well as source rocks for...
National Water-Quality Assessment Program, western Lake Michigan drainages: Summaries of liaison committee meeting, Green Bay, Wisconsin, March 28-29, 1995
Charles A. Peters
1995, Open-File Report 95-163
The Western Lake Michigan Drainages (WMIC) study unit, under investigation since 1991, drains 20,000 square miles (mi2) in eastern Wisconsin and Upper Michigan (fig. 1). The major water-quality issues in the WMIC study unit are: (1) nonpoint-source contamination of surface and ground water by agricultural chemicals, (2) contamination in bottom...
Methods for assessing channel conditions related to scour-critical conditions at bridges in Tennessee
B.A. Bryan, Andrew Simon, G.S. Outlaw, Randy Thomas
1995, Water-Resources Investigations Report 94-4229
The ability to assess quickly the potential for scour at a bridge site, to evaluate those bridges with the greatest potential for significant amounts of scour, and to then identify scour-critical structures is important for public protection and bridge maintenance planning. A bridge-scour assessment information form was developed for collecting...
Water-quality assessment of the upper Snake River Basin, Idaho and western Wyoming — Environmental setting, 1980-92
Molly A. Maupin
1995, Water-Resources Investigations Report 94-4221
The 35,800-square-mile upper Snake River Basin is one of 20 areas studied as part of the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey. Objectives of NAWQA are to study ground- and surface-water quality, biology, and their relations to land-use activities. Major land and water uses that affect...
Structure of the Reelfoot-Rough Creek rift system, Fluorspar area fault complex, and Hicks Dome, southern Illinois and western Kentucky; new constraints from regional seismic reflection data
C. J. Potter, M. B. Goldhaber, P.C. Heigold, James A. Drahovzal
1995, Professional Paper 1538-Q
In the winter of 1811-12, three of the largest historic earthquakes in the United States occurred near New Madrid, Mo. Seismicity continues to the present day throughout a tightly clustered pattern of epicenters centered on the bootheel of Missouri, including parts of northeastern Arkansas, northwestern Tennessee, western Kentucky, and southern...
Water-quality assessment of the Kentucky River basin, Kentucky: Nutrients, sediments, and pesticides in streams, 1987-90
K. H. Haag, S. D. Porter
1995, Water-Resources Investigations Report 94-4227
The U.S. Geological Survey investigated the water quality of the Kentucky River Basin in Kentucky as part of the National Water Quality Assessment program. Data collected during 1987-90 were used to describe the spatial and temporal variability of nutrients, suspended sediment, and pesticides in streams. Concentrations of phosphorus were signifi-...
Soil-solution chemistry in a low-elevation spruce-fir ecosystem, Howland, Maine
Ivan J. Fernandez, Gregory B. Lawrence, Yowhan Son
1995, Water, Air, & Soil Pollution (84) 129-145
Soil solutions were collected monthly by tension and zero-tension lysimeters in a low-elevation red spruce stand in east-central Maine from May 1987 through December 1992. Soil solutions collected by Oa tension lysimeters had higher concentrations of most constituents than the Oa zero-tension lysimeters. In Oa horizon soil solutions growing season...
Water-quality assessment of the Kentucky River Basin, Kentucky: Distribution of metals and other trace elements in sediment and water, 1987-90
Stephen D. Porter, Kevin D. White, J. R. Clark
1995, Water-Resources Investigations Report 94-4134
The U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Program is designed to provide a nationally consistent description of the current status of water quality, to define water-quality trends, and to relate past and present water-quality conditions to natural features, uses of land and water, and other water-quality effects from...
Potentiometric surface of the Upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, September 1994
Leel Knowles
1995, Open-File Report 95-115
This map depicts the potentiometric surface of the Upper Floridan aquifer in the St. Johns River Water Management District and vicinity for September 1994. The map is based on water-level measurements made at more than 900 wells and springs. Ninety-two new wells were added to the September 1994 map--42 in...
Effects of two contrasting agricultural land uses on shallow groundwater quality in the San Joaquin Valley, California; design and preliminary interpretation
N. M. Dubrovsky, Karen R. Burow, Jo Ann M. Gronberg
1995, Open-File Report 95-286
From 1992 through 1994, the San Joaquin-Tulare Basins Study team of the USGS National Water Quality Assessment program investigated the occurrence and distribution of water quality constituents in shallow groundwater underlying two areas of different agricultural land uses: almond orchards and vineyards. The study was restricted to the alluvial fans...
Hydrogeology and simulation of ground-water flow in the Eutaw-McShan aquifer and in the Tuscaloosa aquifer system in northeastern Mississippi
E. W. Strom, M. J. Mallory
1995, Water-Resources Investigations Report 94-4223
The Eutaw-McShan aquifer and Tuscaloosa aquifer system in northeastern Mississippi were investi- gated to better understand the hydrogeology and the ground-water flow in and between the aquifers. A numerical model was developed to simulate ground- water flow for prepumping and pumping conditions, and model simulatons projected the possible effects of...
Hydrogeology and simulation of flow between the alluvial and bedrock aquifers in the upper Black Squirrel Creek basin, El Paso County, Colorado
Kenneth R. Watts
1995, Water-Resources Investigations Report 94-4238
Anticipated increases in pumping from the bedrock aquifers in El Paso County potentially could affect the direction and rate of flow between the alluvial and bedrock aquifers and lower water levels in the overlying alluvial aquifer. The alluvial aquifer underlies about 90 square miles in the upper Black Squirrel Creek...
Conglomerates of the upper middle Eocene to lower Miocene Sespe Formation along the Santa Ynez Fault; implications for the geologic history of the eastern Santa Maria Basin area, California. Reconnaissance bulk-rock and clay mineralogies of argillaceous Great Valley an Franciscan strata, Santa Maria Basin Province, California
Jeffrey L. Howard, Richard M. Pollastro, Hugh McLean, Laura L. Zink
1995, Bulletin 1995-H,I
No abstract available....
Total and non-seasalt sulfate and chloride measured in bulk precipitation samples from the Kilauea Volcano area, Hawaii
M. A. Scholl, S. E. Ingebritsen
1995, Water-Resources Investigations Report 95-4001
Six-month cumulative precipitation samples provide estimates of bulk deposition of sulfate and chloride for the southeast part of the Island of Hawaii during four time periods: August 1991 to February 1992, February 1992 to September 1992, March 1993 to September 1993, and September 1993 to February 1994. Total estimated bulk...
Simulation of ground-water flow in the Albuquerque Basin, central New Mexico, 1901-1994, with projections to 2020
J. M. Kernodle, D. P. McAda, C. R. Thorn
1995, Water-Resources Investigations Report 94-4251
This report describes a three-dimensional finite-difference ground-water-flow model of the Santa Fe Group aquifer system in the Albuquerque Basin, which comprises the Santa Fe Group (late Oligocene to middle Pleistocene age) and overlying valley and basin-fill deposits (Pleistocene to Holocene age). The model is designed to...
Geohydrologic conditions and land use in the Gallatin Valley, southwestern Montana, 1992-93
Steven E. Slagle
1995, Water-Resources Investigations Report 95-4034
The Gallatin Valley is part of an intermontane basin in southwestern Montana with an area of about 540 mi2. The valley is drained by the Gallatin River and its tributaries. After formation of the Three Forks structural basin, the Gallatin Valley was filled with as much as 6,000 feet of...
