Community involvement in a multimedia outreach project for Caddo Lake, Texas
Scott A. Wilson, Carroll L. Cordes
1997, Conference Paper, 1997 ACSM/ASPRS Annual Convention & Exposition Technical Papers
Caddo Lake is located in northeast Texas and northwest Louisiana and is the largest freshwater lake in Texas. A portion of the lake in Texas has been designated a "Wetland of International Significance" under the Ramsar Convention of the United Nations. The human community in the watershed has experienced a...
Evaluation of streamwater quality in the Atlanta region
Norman E. Peters, Stephen J. Kandell
Kathryn J. Hatcher, editor(s)
1997, Conference Paper, Proceedings of the 1997 Georgia Water Resources Conference: March 20-22, 1997, Athens, Georgia
A water-quality index (WQI) was developed from historical data for streams in the Atlanta region. The WQI was derived from percentile ranks of individual water-quality parameter values at each stream by normalizing the constituent ranks for values from all sites in the area for the period from 1990 to 1995....
A rapid and simple method for estimating sulfate reduction activity and quantifying inorganic sulfides
G.A. Ulrich, L.R. Krumholz, J.M. Suflita
1997, Applied and Environmental Microbiology (63) 1627-1630
A simplified passive extraction procedure for quantifying reduced inorganic sulfur compounds from sediments and water is presented. This method may also be used for the estimation of sulfate reduction rates. Efficient extraction of FeS, FeS2, and S2- was obtained with this procedure; however, the efficiency for...
A strategy for monitoring glaciers
Andrew G. Fountain, Robert M. Krimmel, Dennis C. Trabant
1997, Circular 1132
Glaciers are important features in the hydrologic cycle and affect the volume, variability, and water quality of runoff. Assessing and predicting the effect of glaciers on water resources require a monitoring program to provide basic data for this understanding. The monitoring program of the U.S. Geological Survey employs a nested...
Bedrock geologic map of Hubbard Brook Experimental Forest and maps of fractures and geology in roadcuts along Interstate 93, Grafton County, New Hampshire
Christopher Cramer Barton
1997, IMAP 2562
No abstract available....
Estimating ground-water recharge from streamflow hydrographs for a small mountain watershed in a temperate humid climate, New Hampshire, USA
David P. Mau, Thomas C. Winter
1997, Groundwater (35) 291-304
Hydrographs of stream discharge were analyzed to determine ground-water recharge for two small basins draining into Mirror Lake, New Hampshire. Two methods of hydrograph analysis developed for determining ground-water recharge were evaluated, the instantaneous recharge method and the constant recharge method. For the instantaneous recharge method, recharge is assumed to...
Influence of evaporation, ground water, and uncertainty in the hydrologic budget of Lake Lucerne, a seepage lake in Polk County, Florida
Terrie Mackin Lee, Amy Swancar
1997, Water Supply Paper 2439
A detailed hydrologic budget was constructed of a seepage lake of sinkhole origin in the karst terrain of central Florida. During the drought period studied, lake evaporation computed by the energy-budget and mass-transfer methods was the largest component in the budget, followed by rainfall. Ground-water inflow contributed about one-third of...
Chemical factors influencing colloid-facilitated transport of contaminants in porous media
Sujoy B. Roy, David A. Dzombak
1997, Environmental Science & Technology (31) 656-664
The effects of colloids on the transport of two strongly sorbing solutesa hydrophobic organic compound, phenanthrene, and a metal ion, Ni2+were studied in sand-packed laboratory columns under different pH and ionic strength conditions. Two types of column experiments were performed as follows:...
Anaerobic degradation of benzene in diverse anoxic environments
J. Kazumi, M.E. Caldwell, J.M. Suflita, D.R. Lovely, L.Y. Young
1997, Environmental Science & Technology (31) 813-818
Benzene has often been observed to be resistant to microbial degradation under anoxic conditions. A number of recent studies, however, have demonstrated that anaerobic benzene utilization can occur. This study extends the previous reports of anaerobic benzene degradation to sediments that varied with respect to contamination input, predominant redox condition,...
Transformations of TNT and related aminotoluenes in groundwater aquifer slurries under different electron-accepting conditions
L.R. Krumholz, J. Li, W.W. Clarkson, G.G. Wilber, J.M. Suflita
1997, Journal of Industrial Microbiology and Biotechnology (18) 161-169
The transport and fate of pollutants is often governed by both their tendency to sorb as well as their susceptibility to biodegradation. We have evaluated these parameters for 2,4,6-trinitrotoluene (TNT) and several biodegradation products. Slurries of aquifer sediment and groundwater depleted TNT at rates of 27, 7.7 and 5.9 μM...
Land cover characterization and land surface parameterization research
Louis T. Steyaert, Thomas R. Loveland, William J. Parton
1997, Ecological Applications (7) 1-2
The understanding of land surface processes and their parameterization in atmospheric, hydrologic, and ecosystem models has been a dominant research theme over the past decade. For example, many studies have demonstrated the key role of land cover characteristics as controlling factors in determining land surface processes, such as the exchange...
Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to implementation of nutrient management
E. H. Koerkle, D. W. Hall, D. W. Risser, P. L. Lietman, D. C. Chichester
1997, Water-Resources Investigations Report 93-4173
The U.S. Geological Survey, in cooperation with the U.S. Department of Agriculture and Pennsylvania Department of Environmental Protection, investigated the effects of agricultural best-management practices on water quality in the Conestoga River headwaters watershed. This report describes environmental factors and the surface-water and ground-water quality of one 47.5-acre field site,...
Combining digital spatial data with hydrologic measurements to interpret controls of stream chemistry in large watersheds
Yvonne H. Baevsky, Gregory B. Lawrence, David M. Wolock, Douglas A. Burns, Peter S. Murdoch
1997, Conference Paper, BIOGEOMON '97 journal of conference abstracts
No abstract available....
Immunochemical technology for environmental applications
Diana S. Aga, E.M. Thurman, editor(s)
1997, ACS Symposium Series (657)
No abstract available....
In situ and laboratory methods to study subsurface microbial transport
Ronald W. Harvey
C. J. Hurst, L.D. Stetzenbach, M. Walters, G.R. Knudsen, M.J. McInerney, editor(s)
1997, Book chapter, Manual of environmental microbiology
No abstract available....
A diatom-based paleohydrologic record of climate change for the past 800 k.y. from Owens Lake, California
J. Platt Bradbury
George I. Smith, James L. Bischoff, editor(s)
1997, Book chapter, An 800,000-year paleoclimatic record from core OL-92, Owens Lake, Southeast California
A 323-m (~800 k.y.) core of lake deposits beneath Owens Lake playa, Inyo County, California, contains a nearly continuous paleolimnological record based on diatom assemblages. The core chronology is anchored by the Matuyama/Brunhes magnetostratigraphic boundary and the Bishop ash near the base of the record and by radiocarbon dates near...
Comparative results of 27A1 NMR spectrometric and ferron colorimetric analyses of hydroxaluminum hydrolysis products in aged mildly acidic aqueous systems
D.V. Vivit, Karen M. Thorne, J.D. Hem
1997, Book chapter, Nuclear magnetic resonance spectroscopy in environmental chemistry
No abstract available....
Responses of sediment geochemistry to climate change in Owens Lake sediment: An 800-k.y. record of saline/fresh cycles in core OL-92
James L. Bischoff, Jeffrey P. Fitts, John A. Fitzpatrick
1997, Book chapter, An 800,000-year paleoclimatic record from core OL-92, Owens Lake, Southeast California
Geochemical parameters of sediments from drill hole OL-92 indicate that Owens Lake was saline, alkaline, and highly productive during interglacial periods, and was hydrologically open and relatively unproductive during glacial periods. Abundance of CaCO3, organic carbon, and cation-exchange capacity of the clay fraction show cyclic variation down the core. Six...
Geochemistry of the processes that attenuate acid mine drainage in wetlands
Katherine Walton-Day
Geoffrey S. Plumlee, M.J. Logsdon, editor(s)
1997, Book chapter, The environmental geochemistry of mineral deposits, part a: Processes, technique, and health issues
Because conventional treatment of acid-mine drainage (AMD) involves installation and maintenance of water treatment plants, regulators and mine operators have sought lower cost and lower maintenance technologies. One ecological engineering technology that has received increasing research attention is the use of natural and constructed wetlands for remediation of some of...
EM Induction and DC Resistivity surveys near the Norman, Oklahoma Landfill - text and figures for the WRD Norman web site
Jeff E. Lucius, R. J. Bisdorf
1997, Open-File Report 97-679
No abstract available....
Geochemical modeling of water-rock interactions in mining environments
Charles N. Alpers, D. Kirk Nordstrom
Geoffrey S. Plumlee, M.J. Logsdon, L.F. Filipek, editor(s)
1997, Book chapter, The environmental geochemistry of mineral deposits: Part A: Processes, techniques, and health issues part B: Case studies and research topics
Geochemical modeling is a powerful tool for evaluating geochemical processes in mining environments. Properly constrained and judiciously applied, modeling can provide valuable insights into processes controlling the release, transport, and fate of contaminants in mine drainage. This chapter contains 1) an overview of geochemical modeling, 2) discussion of the types...
Mass balance approach to selenium cycling through the San Joaquin Valley, sources to river to bay
Theresa S. Presser, David Z. Piper
R. A. Engberg, editor(s)
1997, Book chapter, Environmental chemistry of selenium
Surface and ground waters of the Central Valley of California (e.g., rivers, dams, off-stream storage reservoirs, pumping facilities, irrigation and drinking water supply canals, agricultural drainage canals) are part of a hydrologic system that makes up a complex ecosystem extending from the riparian wetlands of the Sacramento and San Joaquin...
Seasonal variation in metal concentrations in a stream affected by acid mine drainage, St. Kevin Gulch, Colorado
B. A. Kimball
Geoffrey S. Plumlee, M.J. Logsdon, L.F. Filipek, editor(s)
1997, Book chapter, The environmental geochemistry of mineral deposits: Part A: Processes, techniques, and health issues part B: Case studies and research topics
Mining of mineral deposits in the Rocky Mountains has left a legacy of acidic inflows to otherwise pristine upland watersheds. Since 1986, the U.S. Geological Survey has studied physical, chemical, and biological processes that affect the transport and transformation of metals in St. Kevin Gulch, an acidic, metal-rich stream near...
Soil, plant, and structural considerations for surface barriers in arid environments: Application of results from studies in the Mojave Desert near Beatty, Nevada
Brian J. Andraski, David E. Prudic
U.S. National Research Council, editor(s)
1997, Book chapter, Barrier technologies for environmental management: Summary of a workshop
The suitability of a waste-burial site depends on hydrologic processes that can affect the near-surface water balance. In addition, the loss of burial trench integrity by erosion and subsidence of trench covers may increase the likelihood of infiltration and percolation, thereby reducing the effectiveness of the site in isolating waste....
Temporal variability in the hydrologic regimes of the United States
E. F. Hubbard, J.M. Landwehr, A.R. Barker
1997, IAHS-AISH Publication (246) 97-103
Discharge records where flows have not been subject to overt anthropogenic controls have been identified for over 1500 streamflow gauging stations throughout the United States in the US Geological Survey Hydro-Climatic Data Network. These stations fall within all 21 water resources regions of the United States. Analysis of runoff in...
