Site Selection for a Deep Monitor Well, Kualapuu, Molokai, Hawaii
Delwyn S. Oki
2000, Water-Resources Investigations Report 99-4291
Management of the ground-water resources near Kualapuu on the island of Molokai, Hawaii, is hindered by the uncertainty in the vertical salinity structure in the aquifer. In the State of Hawaii, vertical profiles of ground-water salinity are commonly obtained from deep monitor wells, and these profiles are used to estimate...
Hydrogeology, hydrologic budget, and water chemistry of the Medina Lake area, Texas
Rebecca B. Lambert, Kenneth C. Grimm, Roger W. Lee
2000, Water-Resources Investigations Report 2000-4148
A three-phase study of the Medina Lake area in Texas was done to assess the hydrogeology and hydrology of Medina and Diversion Lakes combined (the lake system) and to determine what fraction of seepage losses from the lake system might enter the regional ground-water-flow system of the Edwards and (or)...
Environmental setting and its relations to water quality in the Kanawha River basin
Terence Messinger, C.A. Hughes
2000, Water-Resources Investigations Report 2000-4020
The Kanawha River and its major tributary, the New River, drain 12,233 mi2 in West Virginia, Virginia, and North Carolina. Altitude ranges from about 550 ft to more than 4,700 ft. The Kanawha River Basin is mountainous, and includes parts of three physiographic provinces, the Blue Ridge (17 percent), Valley...
Estimating the probability of elevated nitrate (NO2+NO3-N) concentrations in ground water in the Columbia Basin Ground Water Management Area, Washington
Lonna M. Frans
2000, Water-Resources Investigations Report 2000-4110
Logistic regression was used to relate anthropogenic (man-made) and natural factors to the occurrence of elevated concentrations of nitrite plus nitrate as nitrogen in ground water in the Columbia Basin Ground Water Management Area, eastern Washington. Variables that were analyzed included well depth, depth of well casing, ground-water recharge rates,...
Two months of flooding in eastern North Carolina, September-October 1999: Hydrologic, water-quality, and geologic effects of hurricanes Dennis, Floyd, and Irene
Jerad D. Bales, Carolyn J. Oblinger, Sallenger Jr.
2000, Water-Resources Investigations Report 2000-4093
The combined effects of Hurricanes Dennis, Floyd, and Irene in September and October 1999 resulted in 2 months of flooding throughout most of eastern North Carolina. Hurricane Dennis battered the Outer Banks for almost a week in early September, resulting in severe shore- line erosion in some locations near Buxton...
Research, methodology, and applications of probabilistic seismic-hazard mapping of the Central and Eastern United States; minutes of a workshop on June 13-14, 2000, at Saint Louis University
Russell L. Wheeler, David M. Perkins
2000, Open-File Report 2000-390
The U.S. Geological Survey (USGS) is updating and revising its 1996 national seismic-hazard maps for release in 2001. Part of this process is the convening of four regional workshops with earth scientists and other users of the maps. The second of these workshops was sponsored by the USGS and the...
In situ production of chlorine-36 in the eastern Snake River Plain aquifer, Idaho: Implications for describing ground-water contamination near a nuclear facility
L. DeWayne Cecil, LeRoy L. Knobel, Jaromy R. Green, Shaun K. Frape
2000, Water-Resources Investigations Report 2000-4114
No abstract available....
Quality-assurance design applied to an assessment of agricultural pesticides in ground water from carbonate bedrock aquifers in the Great Valley of eastern Pennsylvania
Kevin J. Breen
2000, Water-Resources Investigations Report 2000-4104
Assessments to determine whether agricultural pesticides are present in ground water are performed by the Commonwealth of Pennsylvania under the aquifer monitoring provisions of the State Pesticides and Ground Water Strategy. Pennsylvania's Department of Agriculture conducts the monitoring and collects samples; the Department of Environmental Protection (PaDEP) Laboratory analyzes the...
Geologic datasets for weights of evidence analysis in northeast Washington: 1. Geologic raster data
David E. Boleneus, J. Douglas Causey
2000, Open-File Report 2000-495
This dataset contains the combination of geology data (geologic units, faults, folds, and dikes) from 6 1:100,000 scale digital coverages in eastern Washington (Chewelah, Colville, Omak, Oroville, Nespelem, Republic). The data was converted to an Arc grid in ArcView using the Spatial Analyst extension....
Regional ground-water evapotranspiration and ground-water budgets, Great Basin, Nevada
William D. Nichols
2000, Professional Paper 1628
PART A: Ground-water evapotranspiration data from five sites in Nevada and seven sites in Owens Valley, California, were used to develop equations for estimating ground-water evapotranspiration as a function of phreatophyte plant cover or as a function of the depth to ground water. Equations are given for estimating mean daily...
Geophysical constraints on the Virgin River Depression, Nevada, Utah, and Arizona
Victoria E. Langenheim, J. M. Glen, R.C. Jachens, G. L. Dixon, T.C. Katzer, R. L. Morin
2000, Open-File Report 2000-407
Gravity and aeromagnetic data provide insights into the subsurface lithology and structure of the Virgin River Depression (VRD) of Nevada, Utah, and Arizona. The gravity data indicate that the Quaternary and Tertiary sedimentary deposits hide a complex pre-Cenozoic surface. A north-northwest-trending basement ridge separates the Mesquite and Mormon basins, as...
Water quality in the eastern Iowa basins, Iowa and Minnesota, 1996-98
Stephen J. Kalkhoff, Kimberlee K. Barnes, Kent Becher, Mark E. Savoca, Douglas J. Schnoebelen, Eric M. Sadorf, Stephen D. Porter, Daniel J. Sullivan
2000, Circular 1210
The water quality in rivers and streams and in selected aquifers in eastern Iowa and part of southern Minnesota is described and illustrated. Major ions, nitrogen and other nutrients, and pesticides and some of their breakdown compounds were analyzed in both surface and ground water. Biological communities that included fish,...
Metals transport in the Sacramento River, California, 1996-1997; Volume 2: Interpretation of metal loads
Charles N. Alpers, Ronald C. Antweiler, Howard E. Taylor, Peter D. Dileanis, Joseph L. Domagalski, editor(s)
2000, Water-Resources Investigations Report 2000-4002
Metals transport in the Sacramento River, northern California, from July 1996 to June 1997 was evaluated in terms of metal loads from samples of water and suspended colloids that were collected on up to six occasions at 13 sites in the Sacramento River Basin. Four of the sampling periods (July,...
Effects of land use and hydrogeology on the water quality of alluvial aquifers in eastern Iowa and southern Minnesota, 1997
Mark E. Savoca, Eric M. Sadorf, S. Mike Linhart, Kim K.B. Akers
2000, Water-Resources Investigations Report 99-4246
Ground-water samples were collected from monitoring wells at 31 agricultural and 30 urban sites in the Eastern Iowa Basins study unit during June–August 1997 to evaluate the effects of land use and hydrogeology on the water quality of alluvial aquifers. Ground-water samples were analyzed for common ions, nutrients, dissolved organic...
Hydrogeology and simulation of ground-water flow at the Gettysburg Elevator Plant Superfund Site, Adams County, Pennsylvania
Dennis J. Low, Daniel J. Goode, Dennis W. Risser
2000, Open-File Report 2000-185
Ground water in Triassic-age sedimentary fractured-rock aquifers in the area of Gettysburg, Pa., is used as drinking water and for industrial and commercial supply. In 1983, ground water at the Gettysburg Elevator Plant was found by the Pennsylvania Department of Environmental Resources to be contaminated with trichloroethene, 1,1,1-trichloroethane, and other...
Geologic map of the Christian quadrangle, Alaska
W. P. Brosge, H. N. Reiser
2000, Open-File Report 2000-192
Most of the Christian quadrangle is in the Porcupine Plateau; the northwestern part is in the southern Brooks Range, and the southern quarter is in the Yukon Flats. Outcrops of bedrock are poor or lacking, except in the Brooks Range. Although large valley glaciers have moved through the Porcupine Plateau,...
Analytical results and sample locality map for rock, stream-sediment, and soil samples, Northern and Eastern Colorado Desert BLM Resource Area, Imperial, Riverside, and San Bernardino counties, California
Harley D. King, Maurice A. Chaffee
2000, Open-File Report 2000-105-A
In 1996-1998 the U.S. Geological Survey (USGS) conducted a geochemical study of the Bureau of Land Management’s (BLM) 5.5 million-acre Northern and Eastern Colorado Desert Resource Area (usually referred to as the NECD in this report), Imperial, Riverside, and San Bernardino Counties, southeastern California (figure 1). This study was done...
Abrupt physical and chemical changes during 1992-1999, Anderson Springs, SE Geyser Geothermal Field, California
Cathy J. Janik, Fraser Goff, Stephen R. Walter, Michael L. Sorey, Dale Counce, Elizabeth M. Colvard
2000, Open-File Report 2000-37
The Anderson Springs area is located about 90 miles (145 kilometers) north of San Francisco, California, in the southwestern part of Lake County. The area was first developed in the late 1800s as a health resort, which was active until the 1930s. Patrons drank a variety of cool to hot...
Surficial geologic map of central and southern New Jersey
Wayne L. Newell, David S. Powars, J. P. Owens, S.D. Stanford, Byron D. Stone
2000, IMAP 2540-D
No abstract available....
Generalized surficial geologic map of the Denver 1° x 2° quadrangle, Colorado
D. W. Moore, A. W. Straub, M. E. Berry, M. L. Baker, T. R. Brandt
2000, Miscellaneous Field Studies Map 2347
Thirty-nine types of surficial geologic deposits and residual materials of Quaternary age are described and mapped in the greater Denver area, in part of the Front Range, and in the piedmont and plains east of Denver, Boulder, and Castle Rock. Descriptions appear in the pamphlet that accompanies the map. Landslide...
Airborne electromagnetics (EM) as a three-dimensional aquifer-mapping tool
Jeff Wynn, Don Pool, Mark Bultman, Mark E. Gettings, Jean Lemieux
2000, Book, Proceedings Volume, SAGEEP-2000 Conference
The San Pedro River in southeastern Arizona hosts a major migratory bird flyway, and was declared a Riparian Conservation Area by Congress in 1988. Recharge of the adjacent Upper San Pedro Valley aquifer was thought to come primarily from the Huachuca Mountains, but the U. S. Army Garrison of Fort...
Digital geologic map of the Harpers Ferry National Historical Park
Scott Southworth, D. K. Brezinski, Randall C. Orndorff, Kerry M. Lagueux, Peter G. Chirico
2000, Open-File Report 2000-297
No abstract available....
Fire in eastern ecosystems
Dale D. Wade, Brent L. Brock, Patrick H. Brose, James B. Grace, G. A. Hoch, William A. Patterson III
2000, General Technical Report RMRS-GTR-42-4
Prior to Euro-American settlement, fire was a ubiquitous force across most of the Eastern United States. Fire regimes spanned a time-scale from chronic to centuries. Fire severity varied from benign to extreme (fig. 1-2). Today, fire is still a major force on the landscape. In some ecosystems fire stabilizes succession at a particular sere,...
Gypsum-karst collapse in the Black Hills, South Dakota-Wyoming, USA
Jack B. Epstein
2000, Acta Carsologica (29) 103-122
No abstract available....
Kaolinite distribution in Paleocene/Eocene boundary strata of northeastern United States and Pakistan – climatic and stratigraphic implications
Thomas G. Gibson, Laurel M. Bybell, Ellen Thomas, James C. Zachos
2000, GFF (122) 56
No abstract available....
