Statistical and descriptive summaries of water-resources data for the Cannonball River basin, North Dakota and South Dakota
Edwin A. Wesolowski, S.D. Zainhofsky, Valerie M. Dressler
1996, Open-File Report 96-108
Existing hydrologic data and information for the Cannonball River Basin were compiled by the U.S. Geological Survey in cooperation with the Bureau of Reclamation. This report presents a summary of surface-water quality and streamflow data, ground-water quality data, ground-water level data, water-use data, and other information compiled from the U.S....
Hydrologic data for the East Poplar oil field, Fort Peck Indian Reservation, Northeastern Montana
J.N. Thamke, S. D. Craigg, T.M. Mendes
1996, Open-File Report 95-749
This report presents selected hydrologic data for the East Poplar oil field, located in the south-central part of the Fort Peck Indian Reservation in northeastern Montana. Data about the occurrence, quantity, and quality of ground and surface water are presented in tabular form. The tables contain records of privately owned...
Numerical model analysis of the effects of ground-water withdrawals on discharge to streams and springs in small basins typical of the Puget Sound Lowland, Washington
D. S. Morgan, J. L. Jones
1996, Open-File Report 95-470
A numerical ground-water flow model of a hypothetical basin was constructed and used to investigate the effects of ground-water withdrawals on rates of natural discharge to streams and springs in small basins of the Puget Sound Lowland. Definitions of the topography, geology, drainage, and climate of the hypothetical basin were...
Lithologic and ground-water data for monitoring wells in the Santa Clara-Calleguas ground-water basin, Ventura County, California, 1989-95
J.N. Densmore
1996, Open-File Report 96-120
Twenty-three multiple-well (nested) monitoring sites were constructed in the western part of the Santa Clara-Calleguas Hydrologic Unit and ground-water basin between October 1989 and May 1994. This report is a compilation of the data collected at these sites from October 1989 through April 1995 and includes location and design of...
Summary of suspended-solids concentration data, San Francisco Bay, California, water year 1994
P.A. Buchanan, D. H. Schoellhamer, R.C. Sheipline
1996, Open-File Report 95-776
Suspended-solids concentration data were collected in San Francisco Bay during water year 1994. Optical backscatterance sensors and water samples were used to monitor suspended solids continuously at two sites in Suisun Bay, two sites in Central San Francisco Bay, and three sites in South San Francisco Bay. Sensors were positioned...
Automated, colorimetric methods for determination of nitrate plus nitrite, nitrite, ammonium and orthophosphate ions in natural water samples
Ronald C. Antweiler, Charles J. Patton, Howard E. Taylor
1996, Open-File Report 93-638
The apparatus and methods used for the automatic, colorimetric determinations of dissolved nutrients (nitrate plus nitrite, nitrite, ammonium and orthophosphate) in natural waters are described. These techniques allow for the determination of nitrate plus nitrite for the concentration range 0.02 to 8 mg/L (milligrams per liter) as N (nitrogen); for...
Chemical and stable-isotope data from an experiment to examine temporal variability in water samples from screened wells on Cape Cod, Massachusetts, 1994
T. E. Reilly, D.R. LeBlanc, K.W. Bussey, T.B. Councell, R. L. Smith, J.K. Böhlke
1996, Open-File Report 95-734
No abstract available....
A metabolism-based trophic index for comparing the ecological values of shallow-water sediment habitats
W.M. Rizzo, S. K. Dailey, G. J. Lackey, R.R. Christian, B. E. Berry, R. L. Wetzel
1996, Estuaries (19) 247-256
We determined fluxes of oxygen and nutrients between water and sediments at 21 sites primarily in Virginia and North Carolina estuaries, over the past 15 yr. These sites represented broad ranges in salinity, tidal amplitude, hydrology, nutrient availability, turbidity, light availability, depth, sediment grain size, and anthropogenic disturbance. In general,...
Quantification of natural vapor fluxes of trichloroethene in the unsaturated zone at Picatinny Arsenal, New Jersey
James A. Smith, Amy K. Tisdale, H. Jean Cho
1996, Environmental Science & Technology (30) 2243-2250
The upward flux of trichloroethene (TCE) vapor through the unsaturated zone above a contaminated, water-table aquifer at Picatinny Arsenal, New Jersey, has been studied under natural conditions over a 12-month period. Vertical gas-phase diffusion fluxes were estimated indirectly by measuring the TCE vapor concentration gradient in the unsaturated zone and...
Comparison of Eh and H2 measurements for delineating redox processes in a contaminated aquifer
Francis H. Chapelle, Sheridan K. Haack, Peter Adriaens, Mark A. Henry, Paul M. Bradley
1996, Environmental Science & Technology (30) 3365-3569
Measurements of oxidation-reduction potential (Eh) and concentrations of dissolved hydrogen (H2) were made in a shallow groundwater system contaminated with solvents and jet fuel to delineate the zonation of redox processes. Eh measurements ranged from +69 to -158 mV in a cross section of the contaminated plume and accurately delineated oxic from...
The roles of organic matter in the formation of uranium deposits in sedimentary rocks
Charles S. Spirakis
1996, Ore Geology Reviews (11) 53-69
Because reduced uranium species have a much smaller solubility than oxidized uranium species and because of the strong association of organic matter (a powerful reductant) with many uranium ores, reduction has long been considered to be the precipitation mechanism for many types of uranium deposits. Organic matter may also be...
Naturally occurring and mining-affected dissolved metals in two subbasins of the Upper Animas River Basin, southwestern Colorado
Winfield G. Wright, Cathy J. Janik
1996, Fact Sheet 243-95
No abstract available....
Geochemical and hydrologic controls on phosphorus transport in a sewage-contaminated sand and gravel aquifer near Ashumet Pond, Cape Cod, Massachusetts
Donald A. Walter, Brigid A. Rea, Kenneth G. Stollenwerk, Jennifer G. Savoie
1996, Water Supply Paper 2463
Currently (1993), about 170 kg/yr of phosphorus discharges into Ashumet Pond on Cape Cod from a plume of sewage-contaminated ground water. Phosphorus in the plume is mobile in two distinct geochemical environments--an anoxic zone containing dissolved iron and a suboxic zone containing dissolved oxygen. Phosphorus mobility in the suboxic zone...
Hydrology of the Mississippi River valley alluvial aquifer, south-central United States
D. J. Ackerman
1996, Professional Paper 1416-D
Ground-water flow simulation indicates that pumpage from the aquifer since the early 1900's has caused a decrease in ground-water outflow to rivers, an increase in flow from rivers into the aquifer, and an increase in flow to the aquifer through the overlying confining unit. By the mid-1970's, rivers became a...
Summary of the Snake River plain Regional Aquifer-System Analysis in Idaho and eastern Oregon
G. F. Lindholm
1996, Professional Paper 1408-A
Regional aquifers underlying the 15,600-square-mile Snake River Plain in southern Idaho and eastern Oregon was studied as part of the U.S. Geological Survey's Regional Aquifer-System Analysis program. The largest and most productive aquifers in the Snake River Plain are composed of Quaternary basalt of the Snake River Group, which underlies...
Episodic acidification of small streams in the northeastern United States: Episodic response project
P.J. Wigington Jr., J.P. Baker, David R. DeWalle, W.A. Kretser, Peter S. Murdoch, H. A. Simonin, J. Van Sickle, M.K. Mcdowell, D.V. Peck, W.R. Barchet
1996, Ecological Applications (6) 374-388
The Episodic Response Project (ERP) was an interdisciplinary study designed to address uncertainties about the occurrence, nature, and biological effects of episodic acidification of streams in the northeastern United States. The ERP research consisted of intensive studies of the chemistry and biological effects of episodes in 13 streams draining forested...
Structural damage, ground failure, and hydrologic effects of the magnitude (Mw) 5.9 Draney Peak, Idaho, earthquake of February 3, 1994
R. L. Schuster, W. Murphy
1996, Seismological Research Letters (67) 20-29
No abstract available....
Overview of a simple model describing variation of dissolved organic carbon in an upland catchment
Elizabeth W. Boyer, George M. Hornberger, Kenneth E. Bencala, Diane M. McKnight
1996, Ecological Modelling (86) 183-188
Hydrological mechanisms controlling the variation of dissolved organic carbon (DOC) were investigated in the Deer Creek catchment located near Montezuma, CO. Patterns of DOC in streamflow suggested that increased flows through the upper soil horizon during snowmelt are responsible for flushing this DOC-enriched interstitial water to the streams. We examined...
Identification of hydraulic conductivity structure in sand and gravel aquifers: Cape Cod data set
J.R. Eggleston, S.A. Rojstaczer, J.J. Peirce
1996, Water Resources Research (32) 1209-1222
This study evaluates commonly used geostatistical methods to assess reproduction of hydraulic conductivity (K) structure and sensitivity under limiting amounts of data. Extensive conductivity measurements from the Cape Cod sand and gravel aquifer are used to evaluate two geostatistical estimation methods, conditional mean as an estimate and ordinary kriging, and...
Glutathione conjugation and contaminant transformation
Jennifer A. Field, E.M. Thurman
1996, Environmental Science & Technology (30) 1413-1418
The recent identification of a novel sulfonated metabolite of alachlor in groundwater and metolachlor in soil is likely the result of glutathione conjugation. Glutathione conjugation is an important biochemical reaction that leads, in the case of alachlor, to the formation of a rather difficult to detect, water-soluble, and therefore highly...
Use of ground-penetrating radar and continuous seismic-reflection profiling on surface-water bodies in environmental and engineering studies
F.P. Haeni
1996, Journal of Environmental & Engineering Geophysics (1) 27-35
Ground‐penetrating radar (GPR) and continuous seismic‐reflection profiling (CSP) on shallow rivers, lakes, and ponds are efficient and economical ways of obtaining subsurface hydrologic and geologic information for environmental and engineering studies. These methods are similar in that they produce continuous subsurface profiles, are easy to use in some applications, and...
Fluid inclusions and biomarkers in the Upper Mississippi Valley zinc-lead district; implications for the fluid-flow and thermal history of the Illinois Basin
E. Lanier Rowan, Martin B. Goldhaber
1996, Bulletin 2094-F
The Upper Mississippi Valley zinc-lead district is hosted by Ordovician carbonate rocks at the northern margin of the Illinois Basin. Fluid inclusion temperature measurements on Early Permian sphalerite ore from the district are predominantly between 90?C and I50?C. These temperatures are greater than can be explained by their reconstructed burial...
Vegetation, substrate and hydrology in floating marshes in the Mississippi River Delta Plain wetlands, USA
C.E. Sasser, J. G. Gosselink, E.M. Swenson, C.M. Swarzenski, N.C. Leibowitz
1996, Vegetatio (122) 129-142
In the 1940s extensive floating marshes (locally called ‘flotant’) were reported and mapped in coastal wetlands of the Mississippi River Delta Plain. These floating marshes included large areas of Panicum hemitomon-dominated freshwater marshes, and Spartina patens/Scirpus olneyi brackish marshes. Today these marshes appear to be quite different in extent and...
Solute transport along ground-water flows paths near the Nassau/Suffolk County border, Long Island, New York
P.E. Misut, C. J. Brown
1996, Book, Hydrology and hydrogeology of urban and urbanizing areas: a collection of papers presented at the conference held in Boston, Massachusetts, April 21-24, 1996
Benthic processes in South San Francisco Bay: The role of organic inputs and bioturbation
J.M. Caffrey, Douglas E. Hammond, James S. Kuwabara, L.G. Miller, R.R. Twilley
J.T. Hollibaugh, editor(s)
1996, Book chapter, San Francisco Bay: The ecosystem
No abstract available....
