Soil respiration at the Amargosa Desert Research site: A section in U.S. Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Charleston, South Carolina, March 8-12, 1999: Volume 3 (Part C) (WRI 99-4018C)
Alan C. Riggs, Robert G. Striegl, Florentino B. Maestas
David W. Morganwalp, Herbert T. Buxton, editor(s)
1999, Report, U.S. Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Charleston, South Carolina, March 8-12, 1999: Volume 3 (Part C) (WRI 99-4018C)
Automated opaque flux-chamber measurements of soil carbon dioxide (CO2) flux (soil respiration) into the atmosphere at the Amargosa Desert Research Site show seasonal and diel cycles of soil respiration that are closely linked with soil temperature and soil moisture. During 1998, soil respiration increased with soil warming through spring, reaching...
Tritium in water vapor in the shallow unsaturated zone at the Amargosa Desert Research Site
Richard W. Healy, Robert G. Striegl, Robert L. Michel, David E. Prudic, Brian J. Andraski
David W. Morganwalp, Herbert T. Buxton, editor(s)
1999, Report, U.S. Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Charleston, South Carolina, March 8-12, 1999: Volume 3 (Part C) (WRI 99-4018C)
Samples of water vapor in soil gas were obtained at the U.S. Geological Survey's Amargosa Desert Research Site in 1997 and 1998 from a depth of 1.5 m (meters) within a 300 m by 300 m grid that lies immediately to the south and west of a low-level radioactive-waste disposal...
The occurrence of wetlands within the context of hydrologic landscapes
Thomas C. Winter
1999, Conference Paper, Proceedings of Specialty Conference on Potential Consequences of Climate Variability and Change to Water Resources of the United States
No abstract available....
Geochemical heterogeneity of a gasoline-contaminated aquifer
Isabelle M. Cozzarelli, Janet S. Herman, Mary Jo Baedecker, Jeffrey M. Fischer
1999, Journal of Contaminant Hydrology (40) 261-284
The scale of biogeochemical reactions was studied in a physically and chemically heterogeneous surficial Coastal Plain aquifer contaminated by a gasoline spill. The physical heterogeneity of the aquifer is manifested in two hydrologic units, a shallow local aquifer of perched water and a regional sandy aquifer. Over the studied vertical...
Seasonal and annual load of herbicides from the Mississippi River Basin to the Gulf of Mexico
G. M. Clark, D. A. Goolsby, W.A. Battaglin
1999, Environmental Science & Technology (33) 981-986
Water samples collected from rivers in the Mississippi River Basin were analyzed for selected herbicides to evaluate their discharge to the Gulf of Mexico and to identify their predominant source areas within the basin. Samples were collected from the Mississippi River at Baton Rouge, LA from 1991 to 1997 and...
Integrating physical and chemical characteristics of lakes into the glacially influenced landscape of the Northern Cascade Mountains, Washington State, USA
Gary L. Larson, G.A. Lomnicky, Robert Hoffman, W.J. Liss, E. Deimling
1999, Environmental Management (24) 219-228
A basic knowledge of the physical and chemical characteristics of lakes is needed by management to make informed decisions to protect water resources. In this study we investigated some of the physical and chemical characteristics of 58 lakes in alpine, subalpine, and forest vegetation zones in a natural area (North...
Structure and function of fish communities in the southern Lake Michigan basin with emphasis on restoration of native fish communities
Thomas P. Simon, Paul M. Stewart
1999, Natural Areas Journal (19) 142-154
The southern Lake Michigan basin in northwest Indiana possesses a variety of aquatic habitats including riverine, palustrine, and lacustrine systems. The watershed draining this area is a remnant of glacial Lake Chicago and supports fish communities that are typically low in species richness. Composition of the presettlement Lake Michigan fish...
Detecting long-term hydrological patterns at Crater Lake, Oregon
D. L. Peterson, D.G. Silsbee, Kelly T. Redmond
1999, Northwest Science (73) 121-130
Tree-ring chronologies for mountain hemlock (Tsuga mertensiana) were used to reconstruct the water level of Crater Lake, a high-elevation lake in the southern Cascade Range of Oregon. Reconstructions indicate that lake level since the late 1980s has been lower than at any point in the last 300 years except the early 1930s...
Geochronologic and isotope studies of calcite and silica constraining Quaternary unsaturated- and saturated zone hydrologic flux at Yucca Mountain, Nevada, USA
James B. Paces, Zell E. Peterman, Leonid A. Neymark, Joseph F. Whelan, Brian D. Marshall
1999, Conference Paper, Use of hydrogeochemical information in testing groundwater flow models: Technical summary and proceedings of a workshop
Both unsaturated- and saturated-zone aqueous solutions are capable of precipitating secondary mineral deposits that document the history and origins of past water flux. Calcite and opal occur as thin coatings on open fractures and cavity floors within the thick unsaturated zone at Yucca Mountain. Outermost surfaces of calcite have 14C ages...
Field methods for measurement of fluvial sediment
Thomas K. Edwards, G. Douglas Glysson
1999, Techniques of Water-Resources Investigations 03-C2
This chapter describes equipment and procedures for collection and measurement of fluvial sediment. The complexity of the hydrologic and physical environments and man's ever-increasing data needs make it essential for those responsible for the collection of sediment data to be aware of basic concepts involved in processes of erosion, transport,...
Oxygen isotopes of dissolved sulfate as a tool to distinguish natural and mining-related dissolved constituents
Winfield G. Wright, D. Kirk Nordstrom
1999, Report
Natural and mining-related dissolved-constituent concentrations need to be distinguished in a watershed affected by abandoned mines to prioritize subbasins for remediation and to assist with the establishment of water-quality standards. The oxygen isotopes of dissolved sulfate can be used to distinguish between natural and mining-related sources of dissolved constituents. Several...
Water-quality variability in San Francisco Bay: general patterns of change during 1997
J. E. Cloern, B.E. Cole, J.L. Edmunds, J.I. Baylosis
1999, Report, 1997 annual report, San Francisco estuary regional monitoring program for trace substances
The 1997 Annual Report is the fifth Annual Report from the Regional Monitoring Program for Trace Substances (RMP) and contains a comprehensive description of RMP results from the 1997 monitoring year. As in previous years, the report includes results from the Base Program (water, sediment, and bivalve monitoring) and results...
A Study of Natural and Restored Wetland Hydrology
E. Randall Bayless, Leslie D. Arihood, William C. Sidle, Noel B. Pavlovic
1999, Fact Sheet 104-99
The U.S. Geological Survey and the U.S. Environmental Protection Agency are jointly studying the hydrology of a long-existing natural wetland and a recently restored wetland in the Kankakee River Valley in northwestern Indiana. In characterizing the two wetlands, project investigators are testing innovative methods to identify the analytical tools best...
Ground-water resources of Tooele Valley, Utah
David D. Susong
1999, Fact Sheet 125-99
Ground water provides much of the water supply for residents of Tooele Valley (fig. 1). The protection, development, and wise management of ground-water resources are important to support community growth and to ensure the continued availability of ground water for all users.The U.S. Geological Survey, in cooperation with Tooele County,...
Numerical simulation of vertical ground-water flux of the Rio Grande from ground-water temperature profiles, central New Mexico
James R. Bartolino, Richard G. Niswonger
1999, Water-Resources Investigations Report 99-4212
An important gap in the understanding of the hydrology of the Middle Rio Grande Basin, central New Mexico, is the rate at which water from the Rio Grande recharges the Santa Fe Group aquifer system. Several methodologies-including use of the Glover-Balmer equation, flood pulses, and channel permeameters- have been applied...
Health of native riparian vegetation and its relation to hydrologic conditions along the Mojave River, southern California
Gregory C. Lines
1999, Water-Resources Investigations Report 99-4112
The health of native riparian vegetation and its relation to hydrologic conditions were studied along the Mojave River mainly during the growing seasons of 1997 and 1998. The study concentrated on cottonwood-willow woodlands (predominantly Populus fremontii and Salix gooddingii) and mesquite bosques (predominantly Prosopis glandulosa). Tree-growth characteristics were measured at...
Sea-level rise and coastal forests on the Gulf of Mexico
Kimberlyn Williams, Zuleika S. Pinzon, Richard P. Stumpf, Ellen A. Raabe
1999, Open-File Report 99-441
In this report, we review literature pertaining to the response of coastal forests on the Gulf of Mexico to sea-level rise. The report is divided into chapters that discuss effects of sea-level rise on non-mangrove forests, effects of sea-level rise on mangrove forests, and responses of Gulf coast trees to...
Distribution of major herbicides in ground water of the United States
Jack E. Barbash, Gail P. Thelin, Dana W. Kolpin, Robert J. Gilliom
1999, Water-Resources Investigations Report 98-4245
Information on the concentrations and spatial distributions of pesticides and their transformation products, or degradates, in the hydrologic system is essential for managing pesticide use in both agricultural and nonagricultural settings to protect water resources. This report examines the occurrence of selected herbicides and their degradates in ground water, primarily...
Water resources data, New Jersey, water year 1998; Volume 2. Ground-water data
Walter D. Jones
1999, Water Data Report NJ-98-2
Water-resources data for the 1998 water year for New Jersey are presented in three volumes, and consists of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of ground water. Volume 2 contains a summary...
Hydrologic data for the Columbia/Eagle Bluffs Wetland Complex, Columbia, Missouri-1993-96
Joseph M. Richards
1999, Open-File Report 99-607
The U.S. Geological Survey, in cooperation with the Missouri Department of Conservation and the city of Columbia, Missouri, collected hydrologic data from September 1993 through October 1996 as part of a hydrologic characterization of the Columbia/Eagle Bluffs Wetland Complex. The wetland complex was constructed in the Missouri River alluvial plain...
Water Resources Data for Massachusetts and Rhode Island, 1998
R.S. Socolow, L.Y. Comeau, J.L. Zanca, L.R. Ramsbey
1999, Water Data Report MA-RI-98-1
INTRODUCTION The Water Resources Division of the U.S. Geological Survey, in cooperation with State agencies, obtains a large amount of data pertaining to the water resources of Massachusetts and Rhode Island each water year. These data, accumulated during many water years, constitute a valuable data base for developing an improved understanding...
Selected hydrologic features of the Lake Tahoe Basin and surrounding area, California and Nevada, 1998
J. LaRue Smith, J.C. Stone, T.G. Rowe, J.V. Gardener
1999, Water-Resources Investigations Report 99-4031
Hourly and daily variation of sediment redox potential in tidal wetland sediments
W. James Catallo, editor(s)
1999, Biological Science Report 1999-0001
Variation of electrochemical oxidation-reduction (redox) potential was examined in surface salt march sediments under conditions of flooding and tidal simulation in mesocosms and field sites. Time series were generated of redox potential measured in sediment profiles at 2-10 cm depth using combination Pt-Ag/AgCl (ORP) electrodes. Redox potential data were...
Synoptic survey of septic indicators in streams and springs at Monte Sano Mountain, Madison County, Alabama, January 29-31, 1998
Ann K. McPherson, Will S. Mooty
1999, Water-Resources Investigations Report 98-4230
The U.S. Geological Survey conducted a synoptic investigation of fecal bacterial pollution in headwater streams and springs on Monte Sano Mountain. A total of 18 sites were sampled over a 3 day period in late January 1998. Fifteen of the sites were located hydrologically downgradient from residential areas on top...
Model input and output files for the simulation of time of arrival of landfill leachate at the water table, Municipal Solid Waste Landfill Facility, U.S. Army Air Defense Artillery Center and Fort Bliss, El Paso County, Texas
Cynthia G. Abeyta, Peter F. Frenzel
1999, Open-File Report 98-397
This report contains listings of model input and output files for the simulation of the time of arrival of landfill leachate at the water table from the Municipal Solid Waste Landfill Facility (MSWLF), about 10 miles northeast of downtown El Paso, Texas. This simulation was done by the U.S. Geological...
