Estimating 14C groundwater ages in a methanogenic aquifer
Ramon Aravena, Leonard I Wassenaar, Niel Plummer
1995, Water Resources Research (31) 2307-2317
This paper addresses the problem of 14C age dating of groundwaters in a confined regional aquifer affected by methanogenesis. Increasing CH4 concentrations along the groundwater flow system and 13C and 14C isotopic data for dissolved inorganic carbon, dissolved organic carbon, and CH4 clearly show the effect of methanogenesis on groundwater chemistry. Inverse reaction path modeling...
Concentration and transport data for selected dissolved inorganic constituents and dissolved organic carbon in water collected from the Mississippi River and some of its tributaries, July 1991-May 1992
John R. Garbarino, Ronald C. Antweiler, T.I. Brinton, D.A. Roth, Howard E. Taylor
1995, Open-File Report 95-149
No abstract available....
Hydrologic conditions, habitat characteristics, and occurrence of fishes in the Apalachicola River floodplain, Florida; second annual report of progress, October 1993-September 1994
Helen M. Light, Melanie R. Darst, J. W. Grubbs
1995, Open-File Report 95-167
This report describes progress and interim results of the second year of a 4-year study. The purpose of the 4-year study is to describe aquatic habitat types in the Apalachicola River floodplain and quantify the amount of habitat inundated by the river at various stages. Final results will be used...
Selected hydrologic data from Fortymile Wash in the Yucca Mountain area, Nevada, water year 1992
Charles S. Savard
1995, Open-File Report 94-317
A feasibility study to estimate minimum surface-casing depths of oil and gas wells to prevent ground-water contamination in four areas of western Pennsylvania
T. F. Buckwalter, P. J. Squillace
1995, Water-Resources Investigations Report 87-4136
Hydrologic data were evaluated from four areas of western Pennsylvania to estimate the minimum depth of well surface casing needed to prevent contamination of most of the fresh gr6unct-water resources by oil and gas wells. The areas are representative of the different types of oil and gas activities and of...
Effects of surface mining on the hydrology and biology in the Stony Fork basin, Fayette County, Pennsylvania, 1978-85
D.R. Williams, J.R. Ritter, T.M. Mastrilli
1995, Water-Resources Investigations Report 94-4056
The effects of surface coal mining on the water quality, sediment discharge, and aquatic biology of streams in the Stony Fork Basin in southwestern Pennsylvania were studied from 1978 through 1985. Data were collected at five stream sites and one mine discharge site. Field data included streamflow, temperature, specific conductance,...
Geohydrologic framework, historical development of the ground-water system, and general hydrologic and water-quality conditions in 1990, South San Francisco Bay and Peninsula area, California
John L. Fio, David A. Leighton
1995, Open-File Report 94-357
Hydrogeology of south-central St. Croix, U.S. Virgin Islands
R. P. Graves
1995, Water-Resources Investigations Report 93-4162
The subsurface geology of south-central St. Croix consists of alluvium and underlying carbonate rocks. The alluvial deposits consist of sand and gravel with cobbles and boulders and, locally, thin lenses of silt and clay. The carbonate rocks consist of the Oligocene to Middle Miocene age Jealousy formation, the Miocene and...
Dissolved pesticide data for the San Joaquin River at Vernalis and the Sacramento River at Sacramento, California, 1991-94
Dorene E. MacCoy, Kathryn L. Crepeau, Kathryn Kuivila
1995, Open-File Report 95-110
Water samples were collected from sites on the San Joaquin and Sacramento Rivers, California and were analyzed for dissolved organic pesticides. This data collection and analysis are a part of an ongoing project by the U.S. Geological Survey Toxic Contaminants Hydrology program to determine the fate and transport of organic...
Spatial data in geographic information system format on agricultural chemical use, land use, and cropping practices in the United States
William A. Battaglin, Donald A. Goolsby
1995, Water-Resources Investigations Report 94-4176
The spatial data in geographic information system format described in this report consist of estimates for all counties in the conterminous United States of the annual use of 96 herbicides in 1989; annual sales of nitrogen fertilizer, in tons, for 1985-91; and agricultural expenses, land use, chemical use, livestock holdings,...
Selected hydrologic data for the Mesilla ground-water basin, 1987 through 1992 water years, Doña Ana County, New Mexico, and El Paso County, Texas
Edward L. Nickerson
1995, Open-File Report 95-111
The Mesilla ground-water basin monitoring program was established in 1987 to document hydrologic conditions and establish a long-term, continuous data base to permit future quantitative evaluation of the ground-water flow system and stream/aquifer relations. Data collection is divided into three program elements. These are the (1) Mesilla ground- water basin...
Hydrologic data for the Fristoe Unit of the Mark Twain National Forest, southern Missouri, 1988-93
Michael J. Kleeschulte, S. J. Sutley
1995, Open-File Report 95-106
Background hydrologic data were collected from 1988 to 1993 in the Fristoe Unit of the Mark Twain National Forest. Water-quality data collected from area streams, springs, and wells were analyzed using trilinear diagrams, stiff diagrams, boxplots, and summary statistics. The water is a calcium- magnesium-bicarbonate type. Streams generally have slightly...
The Mirror Lake fractured-rock research site: A multidisciplinary research effort in characterizing ground-water flow and chemical transport in fractured rock
Allen M. Shapiro, P. A. Hsieh, Thomas C. Winter
1995, Fact Sheet 138-95
No abstract available....
Measurements of salinity, temperature, and tides in south San Francisco Bay, California, at Dumbarton Bridge: 1990-93 water years
Laurence E. Schemel
1995, Open-File Report 95-326
The U.S. Geological Survey measures salinity, temperature, and water levels (tides) in southern San Francisco Bay at Dumbarton Bridge as part of a cooperative program with the California State Department of Water Resources. During water years 1990-93, measurements were made at 15-minute intervals with electonic sensors located approximately one meter...
South Florida Ecosystem Program of the U.S. Geological Survey
Benjamin F. McPherson, Aaron L. Higer, Sarah Gerould, Irwin H. Kantrowitz
1995, Fact Sheet 134-95
IntroductionThe South Florida Ecosystem Program is one of several study areas within the USGS Ecosystem Program. The Ecosystem Program was established to enable the USGS to enhance its scientific assistance to resource managers who require an improved scientific information base to resolve or prevent complex resource conflicts or environmental problems...
Hydrology and relation of selected water-quality constituents to selected physical factors in Dakota County, Minnesota, 1990-91
J.E. Almendinger, G.B. Mitton
1995, Water-Resources Investigations Report 94-4207
Selected water-quality constituents were determined in water from 5 surface-water sites and 29 wells in Dakota County, Minnesota, to search for possible relations to selected physical factors, including waste-water discharge, agricultural land, Quaternary deposits, bedrock, soil-leaching potential, and water-table depth. All surface-water samples were from the Vermillion River Basin, whose...
Selected hydrologic data for Juab Valley, Utah, 1935-94
Judy I. Steiger
1995, Open-File Report 95-101
This report contains selected hydrologic data collected in Juab Valley, Utah, from 1935 to 1994. The study area is in eastern Juab County in central Utah. The area is bounded on the east by the Wasatch Range and San Pitch Mountains and on the west by Long Ridge and West...
National Water-Quality Assessment Program; the Allegheny-Monongahela River Basin
Steven D. McAuley
1995, Fact Sheet 137-95
In 1991, the U.S. Geological Survey (USGS) began a National Water-Quality Assessment (NAWQA) program. The three major objectives of the NAWQA program are to provide a consistent description of current water-quality conditions for a large part of the Nation's water resources, define long-term trends in water quality, and identify, describe,...
Supporting data for hydrologic studies in San Francisco Bay, California: Meteorological measurements at the Port of Redwood City during 1992-1994
Laurence E. Schemel
1995, Open-File Report 95-327
Meteorological data were collected during 1992-94 at the Port of Redwood City, California, to support hydrologic studies in southern San Francisco Bay. The meteorological variables that were measured were air temperature, atmospheric pressure, quantum flux (insolation), and four parameters of wind speed and direction: scalar mean horizontal wind speed, (vector)...
Simulated monthly hydrologic data and estimated flood characteristics for Cherry Creek at a proposed reservoir site near Terry, Montana
Charles Parrett, D.R. Johnson
1995, Water-Resources Investigations Report 94-4230
Methods used to simulate a monthly hydrologic budget for water years 1937-92 for the proposed Cherry Creek Reservoir (maximum volume about 14,100 acre-feet) are described and monthly results of the simulation are presented. The budget is based on recorded and estimated streamflow, precipitation, evaporation, and estimated reservoir seepage. The budget...
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...
Selected hydrologic data for the Bonneville Salt Flats and Pilot Valley, western Utah, 1991-93
James L. Mason, William C. Brothers, Linda J. Gerner, Pamela S. Muir
1995, Open-File Report 95-104
This report contains hydrologic data collected during 1991-93 in the Bonneville Salt Flats and Pilot Valley study area of western Utah. These data were collected in cooperation with the U.S. Department of the Interior, Bureau of Land Management, as part of a study to investigate possible salt loss from the...
Water-resources activities, North Dakota District, fiscal year 1994-95
1995, Open-File Report 95-105
The mission of the U.S. Geological Survey, Water Resources Division, is to provide the hydrologic information and understanding needed for the optimum utilization and management of the Nation's water resources for the overall benefit of the people of the United States. This report describes water-resources activities of the Water Resources...
Bottled water, spas, and early years of water chemistry
William Back, Edward R. Landa, Lisa Meeks
1995, Groundwater (33) 605-614
Although hot springs have been used and enjoyed for thousands of years, it was not until the late 1700s that they changed the course of world civilization by being the motivation for development of the science of chemistry. The pioneers of chemistry such as Priestley, Cavendish, Lavoisier, and Henry were...
Hydrostatigraphic characterization of coastal aquifer by geophysical log analysis, Cape Cod National Seashore, Massachusetts
Roger H. Morin, Daniel W. Urish
1995, Log Analyst (36) 27-37
The Cape Cod National Seashore comprises part of Provincetown, Massachusetts, which lies at the northern tip of Cape Cod. The hydrologic regime in this area consists of unconsolidated sand-and-gravel deposits that constitute a highly permeable aquifer within which is a freshwater lens floating on denser sea water. A network of...
