Estimating cleanup times for groundwater contamination remediation strategies
Gary Miner, Mark A. Widdowson, Eduardo Mendez III, Francis H. Chapelle
2007, Journal - American Water Works Association (99) 40-46
This article presents the Natural Attenuation Software (NAS), available as a free download from Virginia Polytechnic University, which can help remedial project managers and their contractors estimate the time of groundwater remediation through consideration of such natural attenuation processes as advection, dispersion, sorption, source zone depletion, and biodegradation. NAS consists...
Hydrology and glacier-lake-outburst floods (1987-2004) and water quality (1998-2003) of the Taku River near Juneau, Alaska
Edward G. Neal
2007, Scientific Investigations Report 2007-5027
The Taku River Basin originates in British Columbia, Canada, and drains an area of 6,600 square miles at the U.S. Geological Survey's Taku River gaging station. Several mines operated within the basin prior to 1957, and mineral exploration has resumed signaling potential for future mining developments. The U.S. Geological Survey...
Geochemical data from produced water contamination investigations: Osage-Skiatook Petroleum Environmental Research (OSPER) sites, Osage County, Oklahoma
James J. Thordsen, Yousif K. Kharaka, Gil Ambats, Evangelos Kakouros, Marvin M. Abbott
2007, Open-File Report 2007-1055
We report chemical and isotopic analyses of 345 water samples collected from the Osage-Skiatook Petroleum Environmental Research (OSPER) project. Water samples were collected as part of an ongoing multi-year USGS investigation to study the transport, fate, natural attenuation, and ecosystem impacts of inorganic salts and organic compounds present in produced...
A 3-Dimensional Model of Water-Bearing Sequences in the Dominguez Gap Region, Long Beach, California
Daniel J. Ponti, Kenneth D. Ehman, Brian D. Edwards, John C. Tinsley III, Thomas Hildenbrand, John W. Hillhouse, Randall T. Hanson, Kristen McDougall, Charles L. Powell II, Elmira Wan, Michael Land, Shannon Mahan, Andrei M. Sarna-Wojcicki
2007, Open-File Report 2007-1013
A 3-dimensional computer model of the Quaternary sequence stratigraphy in the Dominguez gap region of Long Beach, California has been developed to provide a robust chronostratigraphic framework for hydrologic and tectonic studies. The model consists of 13 layers within a 16.5 by 16.1 km (10.25 by 10 mile) square area...
Guidelines for preparation of State water-use estimates for 2005
Susan S. Hutson
2007, Techniques and Methods 4-E1
The U.S. Geological Survey (USGS) has estimated the use of water in the United States at 5-year intervals since 1950. This report describes the water-use categories and data elements required for the 2005 national water-use compilation conducted as part of the USGS National Water Use Information Program. The report identifies...
The National Streamflow Statistics Program: A Computer Program for Estimating Streamflow Statistics for Ungaged Sites
Kernell G. Ries III, J. B. With sections by Atkins, P.R. Hummel, Matthew J. Gray, R. Dusenbury, M.E. Jennings, W.H. Kirby, H. C. Riggs, V.B. Sauer, W.O. Thomas Jr.
2007, Techniques and Methods 4-A6
The National Streamflow Statistics (NSS) Program is a computer program that should be useful to engineers, hydrologists, and others for planning, management, and design applications. NSS compiles all current U.S. Geological Survey (USGS) regional regression equations for estimating streamflow statistics at ungaged sites in an easy-to-use interface that operates on...
The FORE-SCE model: a practical approach for projecting land cover change using scenario-based modeling
Terry L. Sohl, Kristi Sayler, Mark A. Drummond, Thomas R. Loveland
2007, Journal of Land Use Science (2) 103-126
A wide variety of ecological applications require spatially explicit, historic, current, and projected land use and land cover data. The U.S. Land Cover Trends project is analyzing contemporary (1973–2000) land-cover change in the conterminous United States. The newly developed FORE-SCE model used Land Cover Trends data and theoretical, statistical, and...
Investigating the Environmental Effects of Agriculture Practices on Natural Resources: Scientific Contributions of the U.S. Geological Survey to Enhance the Management of Agricultural Landscapes
Water Resources Division, U.S. Geological Survey
2007, Fact Sheet 2007-3001
The U.S. Geological Survey (USGS) enhances and protects the quality of life in the United States by advancing scientific knowledge to facilitate effective management of hydrologic, biologic, and geologic resources. Results of selected USGS research and monitoring projects in agricultural landscapes are presented in this Fact Sheet. Significant environmental and...
Regional Water-Resources Studies in Nevada
Eva M. Bauer, Shannon C. Watermolen
2007, Fact Sheet 2007-3006
Introduction: Water-resources information for the State of Nevada should be readily accessible to community planners and the general public in a user-friendly web environment and should be actively managed and maintained with accurate historic and current hydrologic data. The USGS, in cooperation with State of Nevada and local government agencies,...
Harmful algal blooms
Jennifer L. Graham
2007, Fact Sheet 2006-3147
What are Harmful Algal Blooms (HABs)? Freshwater and marine harmful algal blooms (HABs) can occur anytime water use is impaired due to excessive accumulations of algae. HAB occurrence is affected by a complex set of physical, chemical, biological, hydrological, and meteorological conditions making it difficult to isolate specific causative environmental factors....
Aufeis accumulations in stream bottoms in arctic and subarctic environments as a possible indicator of geologic structure: Chapter F in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project
Richard B. Wanty, Bronwen Wang, Jim Vohden, Warren C. Day, Larry P. Gough
Larry P. Gough, Warren C. Day, editor(s)
2007, Scientific Investigations Report 2007-5289-F
Thick accumulations of ice, called “aufeis,” form during winter along stream and river valleys in arctic and subarctic regions. In high-gradient alpine streams, aufeis forms mostly as a result of ground-water discharge into the stream channel. The ice occludes this discharge, perturbing the steady-state condition, and causing an incremental rise...
Uranium(VI) release from contaminated vadose zone sediments: Estimation of potential contributions from dissolution and desorption
Deborah L. Bond, James A. Davis, John M. Zachara
2007, Book chapter, Developments in earth and environmental sciences
A key difficulty in developing accurate, science-based conceptual models for remediation of contaminated field sites is the proper accounting of multiple coupled geochemical and hydrologic processes. An example of such a difficulty is the separation of desorption and dissolution processes in releasing contaminants from sediments to groundwaters; very few studies are found...
Spatially continuous interpolation of water stage and water depths using the Everglades depth estimation network (EDEN)
Leonard Pearlstine, Aaron Higer, Monica Palaseanu, Ikuko Fujisaki, Frank Mazzotti
2007, Report
The Everglades Depth Estimation Network (EDEN) is an integrated network of real-time water-level monitoring, ground-elevation modeling, and water-surface modeling that provides scientists and managers with current (2000-present), online water-stage and water-depth information for the entire freshwater portion of the Greater Everglades. Continuous daily spatial interpolations of the EDEN network stage...
Accounting for tomographic resolution in estimating hydrologic properties from geophysical data
K. Singha, Frederick D. Day-Lewis, S. Moysey
D.W. Hyndman, Frederick D. Day-Lewis, K. Singha, editor(s)
2007, Book chapter, Subsurface hydrology: Data integration for properties and processes
No abstract available. ...
Overview of issues in subsurface and landfill microbiology
Ronald W. Harvey, Joseph M. Suflita, Michael K. McInerney, Aaron L. Mills
C. J. Hurst, R. Crawford, J. Garland, D.A. Lipson, A.L. Mills, L.D. Stetzenbach, editor(s)
2007, Book chapter, Manual of environmental microbiology
To date, the majority of evidence indicates that most subsurface environments possess climax ecological communities that are well adapted to the environment in which they live. Like their counterparts on the surface, subsurface ecosystems are characterized by a high degree of microbiological diversity, they possess trophic structure, and they exhibit...
Analysis of continuous GPS measurements from southern Victoria Land, Antarctica
Michael J. Willis
2007, Open-File Report 2007-1047-SRP-064
Several years of continuous data have been collected at remote bedrock Global Positioning System (GPS) sites in southern Victoria Land, Antarctica. Annual to sub-annual variations are observed in the position time-series. An atmospheric pressure loading (APL) effect is calculated from pressure field anomalies supplied by the European Centre for Medium-Range...
Integrating hydrologic and geophysical data to constrain coastal surficial aquifer processes at multiple spatial and temporal scales
Gregory M. Schultz, Carolyn Ruppel, Patrick Fulton
David W. Hyndman, Frederick D. Day-Lewis, Kamini Singha, editor(s)
2007, Book chapter, Subsurface hydrology: Data integration for properties and processes
Since 1997, repeated, coincident geophysical surveys and extensive hydrologic studies in shallow monitoring wells have been used to study static and dynamic processes associated with surface water-groundwater interaction at a range of spatial scales at the estuarine and ocean boundaries of an undeveloped, permeable barrier island in the Georgia part...
Determining the terminal electron-accepting reaction in the saturated subsurface
Richard L. Smith, J. Harris
C. J. Hurst, editor(s)
2007, Book chapter, Manual of Environmental Microbiology
No abstract available. ...
Introduction and background
R. Harris, David P. Krabbenhoft, M. Murray, R.J. Reash, T. Saltman, R. Murray
2007, Book chapter, Ecosystem responses to mercury contamination: Indicators of change
No abstract available. ...
Transport of microorganisms in the terrestrial subsurface: In situ and laboratory methods
Ronald W. Harvey, Hauke Harms, Lee L. Landkamer
C. J. Hurst, R. Crawford, J. Garland, D.A. Lipson, A. Mills, L.D. Stetzenbach, editor(s)
2007, Book chapter, Manual of environmental microbiology
This chapter describes and discusses laboratory and field techniques for studying microbial transport behavior in aquifer materials and model porous media. Changes in ionic strength (I) during transport studies may occur inadvertently as a result of using halides as conservative tracers and may lead to density-induced sinking of the tracer...
Biogeochemistry of aquifer systems
Isabelle M. Cozzarelli, J.V. Weiss
C. J. Hurst, R. Crawford, J. Garland, A.L. Mills, D.A. Lipson, L.D. Stetzenbach, editor(s)
2007, Book chapter, Manual of environmental microbiology
Many studies have examined the differences in bacterial numbers, composition, and activity between groundwater and sediment samples. The majority of the literature has suggested higher percentages of attached bacteria than of unattached bacteria in aquifer systems, including in pristine aquifers and in aquifers contaminated with petroleum, creosote, sewage, and landfill...
Monitoring and evaluating trends in sediment and water indicators
David P. Krabbenhoft, D.R. Engstrom, C. Gilmour, R. Harris, J.P. Hurley, R.P. Mason
R. Harris, David P. Krabbenhoft, R. Mason, M. Murray, R.J. Reash, T. Saltman, editor(s)
2007, Book chapter, Ecosystem responses to mercury contamination: Indicators of change
No abstract available. ...
Integrated multi‐scale characterization of ground‐water flow and chemical transport in fractured crystalline rock at the Mirror Lake Site, New Hampshire
Allen M. Shapiro, Paul A. Hsieh, William C. Burton, Gregory J. Walsh
David W. Hyndman, Frederick D. Day-Lewis, Kamini Singha, editor(s)
2007, Book chapter, Subsurface hydrology: Data integration for properties and processes
This chapter contains sections titled:IntroductionMirror Lake SiteFractures and Geologic MappingHydraulic Properties of Fractured Rock From Meters to KilometersChemical Migration in Fractured RockFracture Controls on Ground‐Water Flow and Chemical Transport at the Mirror Lake SiteSummary...
Nitrate in aquifers beneath agricultural systems
M. R. Burkart, J.D. Stoner
Tanik A.Ozturk I.Yazgan M.S.Heath R., editor(s)
2007, Conference Paper, Water Science and Technology
Research from several regions of the world provides spatially anecdotal evidence to hypothesize which hydrologic and agricultural factors contribute to groundwater vulnerability to nitrate contamination. Analysis of nationally consistent measurements from the U.S. Geological Survey's NAWQA program confirms these hypotheses for a substantial range of agricultural systems. Shallow unconfined aquifers...
Characterization of microtopography and its influence on vegetation patterns in created wetlands
K. Moser, C. Ahn, Gregory E. Noe
2007, Wetlands (27) 1081-1097
Created wetlands are increasingly used to mitigate wetland loss. Thus, identifying wetland creation methods that enhance ecosystem development might increase the likelihood of mitigation success. Noting that the microtopographic variation found in natural wetland settings may not commonly be found in created wetlands, this study explores relationships between induced microtopography,...
