Development of a Land Use Database for the Little Blackwater Watershed, Dorchester County, Maryland
Lesley E. Milheim, John Jones, Roger A. Barlow
2007, Open-File Report 2007-1309
Many agricultural and forested areas in proximity to National Wildlife Refuges (NWR) are under increasing economic pressure to develop lands for commercial or residential development. The upper portion of the Little Blackwater River watershed - a 27 square mile area within largely low-lying Dorchester County, Maryland, on the eastern shore...
Development of an Impervious-Surface Database for the Little Blackwater River Watershed, Dorchester County, Maryland
Lesley E. Milheim, John Jones, Roger A. Barlow
2007, Open-File Report 2007-1308
Many agricultural and forested areas in proximity to National Wildlife Refuges (NWR) are under increasing economic pressure for commercial or residential development. The upper portion of the Little Blackwater River watershed - a 27 square mile area within largely low-lying Dorchester County, Maryland, on the eastern shore of the Chesapeake...
Hydrologic, Hydraulic, and Flood Analyses of the Blackberry Creek Watershed, Kendall County, Illinois
Elizabeth A. Murphy, Timothy D. Straub, David T. Soong, Christopher S. Hamblen
2007, Scientific Investigations Report 2007-5141
Results of the hydrologic model, flood-frequency, hydraulic model, and flood-hazard analysis of the Blackberry Creek watershed in Kendall County, Illinois, indicate that the 100-year and 500-year flood plains cover approximately 3,699 and 3,762 acres of land, respectively. On the basis of land-cover data for 2003, most of the land in...
Is there a risk associated with the insect repellent DEET (N,N-diethyl-m-toluamide) commonly found in aquatic environments?
S.D. Costanzo, A.J. Watkinson, E.J. Murby, Dana W. Kolpin, Mark W. Sandstrom
2007, Science of the Total Environment (384) 214-220
DEET (N,N-diethyl-m-toluamide) is the active ingredient of most commercial insect repellents. This compound has commonly been detected in aquatic water samples from around the world indicating that DEET is both mobile and persistent, despite earlier assumptions that DEET was unlikely to enter aquatic ecosystems. DEET's registration category does not require...
Geologic controls on movement of produced-water releases at US geological survey research Site A, Skiatook lake, Osage county, Oklahoma
James K. Otton, Robert A. Zielinski, Bruce D. Smith, Marvin M. Abbott
2007, Applied Geochemistry (22) 2138-2154
Highly saline produced water was released from multiple sources during oil field operations from 1913 to 1973 at the USGS research Site A on Skiatook Lake in northeastern Oklahoma. Two pits, designed to hold produced water and oil, were major sources for release...
Climate Change Research at USGS Center for Earth Resources Observation and Science (EROS)
U.S. Geological Survey
2007, Fact Sheet 2007-3091
Research and development projects at EROS apply unique resources to support the USGS mission of developing understanding, monitoring, and modeling of climate variability and change and their human, physical, and biological impacts. Remote sensing resources, both new and archived, form the core of our ability to determine changes in the...
Invasive species management and research using GIS
Tracy R. Holcombe, Thomas J. Stohlgren, Catherine S. Jarnevich
2007, Conference Paper, Proceedings of an international symposium. USDA/APHIS/WS
Geographical Information Systems (GIS) are powerful tools in the field of invasive species management. GIS can be used to create potential distribution maps for all manner of taxa, including plants, animals, and diseases. GIS also performs well in the early detection and rapid assessment of invasive species. Here, we used...
Preface
Yousif K. Kharaka, James K. Otton
2007, Applied Geochemistry (22) 2095-2098
Energy is the essential commodity that powers the expanding global economy. Starting in the 1950s, oil and natural gas became the main sources of primary energy for the rapidly increasing world population (Edwards, 1997). In 2003, petroleum was the source for 62.1% of global energy, and projections by energy...
Precipitation and Runoff Simulations of the Carson Range and Pine Nut Mountains, and Updated Estimates of Ground-Water Inflow and the Ground-Water Budgets for Basin-Fill Aquifers of Carson Valley, Douglas County, Nevada, and Alpine County, California
Anne E. Jeton, Douglas K. Maurer
2007, Scientific Investigations Report 2007-5205
Recent estimates of ground-water inflow to the basin-fill aquifers of Carson Valley, Nevada, and California, from the adjacent Carson Range and Pine Nut Mountains ranged from 22,000 to 40,000 acre-feet per year using water-yield and chloride-balance methods. In this study, watershed models were developed for watersheds with perennial streams and...
Contamination in fractured-rock aquifers: Research at the former Naval Air Warfare Center, West Trenton, New Jersey
Daniel J. Goode, Claire R. Tiedeman, Pierre J. Lacombe, Thomas E. Imbrigiotta, Allen M. Shapiro, Francis H. Chapelle
2007, Fact Sheet 2007-3074
The U.S. Geological Survey and cooperators are studying chlorinated solvents in a fractured sedimentary rock aquifer underlying the former Naval Air Warfare Center (NAWC), West Trenton, New Jersey. Fractured-rock aquifers are common in many parts of the United States and are highly susceptible to contamination, particularly at industrial sites. Compared...
Geophysical framework investigations influencing ground-water resources in east-central Nevada and west-central Utah, with a section on geologic and geophysical basin by basin descriptions
Janet T. Watt, David A. Ponce, Alan R. Wallace
2007, Open-File Report 2007-1163
A geophysical investigation was undertaken as part of an effort to characterize the geologic framework influencing ground-water resources in east-central Nevada and west-central Utah. New gravity data were combined with existing aeromagnetic, drill-hole, and geologic data to help determine basin geometry, infer structural features, estimate depth to pre-Cenozoic basement rocks,...
Effects of the temporal variability of evapotranspiration on hydrologic simulation in central Florida
Andrew M. O’Reilly
2007, Scientific Investigations Report 2007-5100
The transient response of a hydrologic system can be of concern to water-resource managers, because it is often extreme relatively short-lived events, such as floods or droughts, that profoundly influence the management of the resource. The water available to a hydrologic system for stream flow and aquifer recharge is determined...
Bacterial Cycling of Methyl Halides
Hendrik Schafer, Laurence G. Miller, Ronald S. Oremland, Colin Murrell
2007, Advances in Applied Microbiology (61) 307-346
This chapter focuses on the monohalogenated methanes methyl chloride (MeCl) and methyl bromide (MeBr), their natural and anthropogenic sources, and their degradation by microorganisms, specifically by aerobic bacteria that can...
Hydrologic conditions in northwest Florida: 2006 water year
Richard Jay Verdi
2007, Fact Sheet 2007-3054
National data for streamflow, ground-water levels, and quality of water for the 2006 water year are accessible to the public on the U.S. Geological Survey's (USGS) Site Information Management System (SIMS) website http://web10capp.er.usgs.gov/adr06_lookup/search.jsp. This fact sheet describes data and hydrologic conditions throughout northwest Florida during the 2006 water year (fig....
Marl prairie vegetation response to 20th century hydrologic change
Christopher E. Bernhardt, Debra A. Willard
2007, Open-File Report 2006-1355
We conducted geochronologic and pollen analyses from sediment cores collected in solution holes within marl prairies of Big Cypress National Preserve to reconstruct vegetation patterns of the last few centuries and evaluate the stability and longevity of marl prairies within the greater Everglades ecosystem. Based on radiocarbon dating and pollen...
Watershed Effects on Streamflow Quantity and Quality in Six Watersheds of Gwinnett County, Georgia
Mark N. Landers, Paul D. Ankcorn, Keith W. McFadden
2007, Scientific Investigations Report 2007-5132
Watershed management is critical for the protection and enhancement of streams that provide multiple benefits for Gwinnett County, Georgia, and downstream communities. Successful watershed management requires an understanding of how stream quality is affected by watershed characteristics. The influence of watershed characteristics on stream quality is complex, particularly for the...
Water Budgets: Foundations for Effective Water-Resources and Environmental Management
Richard W. Healy, Thomas C. Winter, James W. LaBaugh, O. Lehn Franke
2007, Circular 1308
INTRODUCTION Water budgets provide a means for evaluating availability and sustainability of a water supply. A water budget simply states that the rate of change in water stored in an area, such as a watershed, is balanced by the rate at which water flows into and out of the area. An...
Water-Quality Characteristics for Sites in the Tongue, Powder, Cheyenne, and Belle Fourche River Drainage Basins, Wyoming and Montana, Water Years 2001-05, with Temporal Patterns of Selected Long-Term Water-Quality Data
Melanie L. Clark, Jon P. Mason
2007, Scientific Investigations Report 2007-5146
Water-quality sampling was conducted regularly at stream sites within or near the Powder River structural basin in northeastern Wyoming and southeastern Montana during water years 2001-05 (October 1, 2000, to September 30, 2005) to characterize water quality in an area of coalbed natural gas development. The U.S. Geological Survey, in...
Quantifying the benthic source of nutrients to the water column of Upper Klamath Lake, Oregon
James S. Kuwabara, Dennis D. Lynch, Brent R. Topping, Fred Murphy, James L. Carter, Nancy S. Simon, Francis Parcheso, Tamara M. Wood, Mary K. Lindenberg, Katryn Wiese, Ronald J. Avanzino
2007, Open-File Report 2007-1276
Executive Summary Five sampling trips were coordinated in April, May and August 2006, and May and July 2007 to sample the water column and benthos of Upper Klamath Lake, OR (Fig. 1; Table 1), before, during and after the annual cyanophyte bloom of Aphanizomenon flos-aquae (AFA). A pore-water profiler was designed...
Results of the Level-1 Water-Quality Inventory at the Pinnacles National Monument, June 2006
James W. Borchers, Michael S. Lyttge
2007, Data Series 283
To help define baseline water quality of key water resources at Pinnacles National Monument, California, the U.S. Geological Survey collected and analyzed ground water from seven springs sampled during June 2006. During the dry season, seeps and springs are the primary source of water for wildlife in the monument and...
Characterization of Preferential Ground-Water Seepage From a Chlorinated Hydrocarbon-Contaminated Aquifer to West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 2002-04
Emily H. Majcher, Daniel J. Phelan, Michelle M. Lorah, Angela L. McGinty
2007, Scientific Investigations Report 2006-5233
Wetlands act as natural transition zones between ground water and surface water, characterized by the complex interdependency of hydrology, chemical and physical properties, and biotic effects. Although field and laboratory demonstrations have shown efficient natural attenuation processes in the non-seep wetland areas and stream bottom sediments of West Branch Canal...
Ground-water resources and the hydrologic effects of petroleum occurrence and development, Warren County, Northwestern Pennsylvania
Theodore F. Buckwalter, Michael E. Moore
2007, Scientific Investigations Report 2006-5263
Most of the northern half of Warren County is in the Northwestern Glaciated Plateau Section of the Appalachian Plateaus Physiographic Province. The remainder of the county is in the High Plateau Section. The glacial outwash sand and gravel hydrogeologic unit is the most extensively used unconsolidated unit for water supply...
Development of relations of stream stage to channel geometry and discharge for stream segments simulated with Hydrologic Simulation Program-Fortran (HSPF), Chesapeake Bay Watershed and adjacent parts of Virginia, Maryland, and Delaware
Douglas Moyer, Mark Bennett
2007, Scientific Investigations Report 2007-5135
The U.S. Geological Survey (USGS), U.S. Environmental Protection Agency (USEPA), Chesapeake Bay Program (CBP), Interstate Commission for the Potomac River Basin (ICPRB), Maryland Department of the Environment (MDE), Virginia Department of Conservation and Recreation (VADCR), and University of Maryland (UMD) are collaborating to improve the resolution of the Chesapeake Bay...
Nutrient chemistry, transformation and release in riparian groundwater seep discharge during the final meter of subsurface transport, Minnesota, USA
Frank J. Triska, John H. Duff, Alan P. Jackman, Ronald J. Avanzino
2007, Verhandlugen Internationale Vereingung fur Limnologie (30) 435-440
No abstract available....
Radionuclides in soils, 1960–2006: A view from the World Congress of Soil Science
Edward R. Landa, S. Uchida
2007, Journal of Environmental Radioactivity (99) 873-874
No abstract available. ...
