Database of groundwater levels and hydrograph descriptions for the Nevada Test Site area, Nye County, Nevada
Peggy E. Elliott, Joseph M. Fenelon
2010, Data Series 533
A database containing water levels measured from wells in and near areas of underground nuclear testing at the Nevada Test Site since 1941 was developed. The database provides information for each well including well construction, borehole lithology, units contributing water to the well, and general site remarks. Water-level information...
Historical changes in annual peak flows in Maine and implications for flood-frequency analyses
Glenn A. Hodgkins
2010, Scientific Investigations Report 2010-5094
Flood-frequency analyses use statistical methods to compute peak streamflows for selected recurrence intervals— the average number of years between peak flows that are equal to or greater than a specified peak flow. Analyses are based on annual peak flows at a stream. It has long been assumed that the annual...
Hydrogeology and groundwater availability in Clarke County, Virginia
David L. Nelms, Roger M. Moberg
2010, Scientific Investigations Report 2010-5112
The prolonged drought between 1999 and 2002 drew attention in Clarke County, Virginia, to the quantity and sustainability of its groundwater resources. The groundwater flow systems of the county are complex and are controlled by the extremely folded and faulted geology that underlies the county. A study was conducted between...
Historical changes in annual peak flows in Maine and implications for flood-frequency analyses
Glenn A. Hodgkins
2010, Fact Sheet 2010-3034
To safely and economically design bridges, culverts, and other structures that are in or near streams (fig. 1 for example), it is necessary to determine the magnitude of peak streamflows such as the 100-year flow. Flood-frequency analyses use statistical methods to compute peak flows for selected recurrence intervals (100 years,...
Summary of estimated water use in the United States in 2005
Nancy L. Barber
2010, Fact Sheet 2009-3098
About 410,000 million gallons per day (Mgal/d) of water was withdrawn for use in the United States during 2005. About 80 percent of the total (328,000 Mgal/d) withdrawal was from surface water, and about 82 percent of the surface water withdrawn was freshwater. The remaining 20 percent (82,600 Mgal/d) was...
U.S. Geological Survey (USGS), Western Region: Coastal ecosystem responses to influences from land and sea, Coastal and Ocean Science
James L. Bodkin
2010, Fact Sheet 2010-3099
Sea otters and the nearshore ecosystems they inhabit-from highly urbanized California to relatively pristine Alaska-are the focus of a new multidisciplinary study by scientists with the U.S. Geological Survey (USGS) and a suite of international, academic and government collaborators. The Coastal Ecosystem Responses to Influences from Land and Sea project...
Applying GORE-TEX technology for rapid contaminant assessments at Fort Gordon, Georgia
Fred W. Falls, Larry G. Harrelson, W. Hagan Ratliff, John B. Wellborn, James Landmeyer
2010, Conference Paper, Proceedings of the 2010 South Carolina Water Resources Conference
The U.S. Geological Survey, in cooperation with the U.S. Department of the Army at Fort Gordon, Georgia, deployed GORE1 adsorbent samplers along creeks and floodplains to rapidly assess potential contamination at abandoned facilities and in adjacent surface water. The samplers provide screening-level data to determine the presence or absence of...
Harmful algal blooms: A case study in two mesotrophic drinking water supply reservoirs in South Carolina
Celeste A. Journey, Karen M. Beaulieu, Rodney R. Knight, Jennifer L. Graham, Jane M. Arrington, Rebecca West, John Westcott, Paul M. Bradley
2010, Conference Paper, Proceedings of the 2010 South Carolina Water Resources Conference
Algal blooms can be harmful and a nuisance in a variety of aquatic ecosystems, including reservoirs and lakes. Cyanobacterial(blue-green algae) harmful algal blooms are notorious for producing both taste-and-odor compounds and potent toxins that may affect human health. Taste–and-odor episodes are aesthetic problems often caused by cyanobacterial-produced organic compounds (geosmin...
Development of a conceptual model of groundwater flow, Chesterfield County, South Carolina
Bruce G. Campbell, James Landmeyer
2010, Conference Paper, 2010 South Carolina Water Resources Conference
Chesterfield County is located in the north central part of South Carolina (SC) and is adjacent to the North Carolina border. The County lies along the Fall Line, the geologic boundary between the Atlantic Coastal Plain (ACP) and Piedmont physiographic provinces. Between 2000 and 2007, the population increased from 42,768...
Data mining for water resource management part 2 - methods and approaches to solving contemporary problems
Edwin A. Roehl, Paul Conrads
2010, Conference Paper, Proceedings of the 2010 South Carolina Water Resources Conference
This is the second of two papers that describe how data mining can aid natural-resource managers with the difficult problem of controlling the interactions between hydrologic and man-made systems. Data mining is a new science that assists scientists in converting large databases into knowledge, and is uniquely able to leverage...
Detection and mapping of hydrocarbon deposits on Titan
Roger N. Clark, J. M. Curchin, Jason W. Barnes, Ralf Jaumann, Laurence A. Soderblom, Dale P. Cruikshank, Robert H. Brown, Sebastien Rodriguez, Jonathan Lunine, Katrin Stephan, Todd M. Hoefen, Stephane Le Mouelic, Christophe Sotin, Kevin H. Baines, Bonnie J. Buratti, Philip D. Nicholson
2010, Journal of Geophysical Research - Planets (115)
We report the identification of compounds on Titan's surface by spatially resolved imaging spectroscopy methods through Titan's atmosphere, and set upper limits to other organic compounds. We present evidence for surface deposits of solid benzene (C6H6), solid and/or liquid ethane (C2H6), or methane (CH4), and clouds of hydrogen cyanide (HCN)...
Using Landsat satellite data to support pesticide exposure assessment in California
Susan K. Maxwell, Matthew Airola, John R. Nuckols
2010, International Journal of Health Geographics (9)
Background The recent U.S. Geological Survey policy offering Landsat satellite data at no cost provides researchers new opportunities to explore relationships between environment and health. The purpose of this study was to examine the potential for using Landsat satellite data to support pesticide exposure assessment in California. Methods and Results We collected a...
Preliminary assessment of several parameters to measure and compare usefulness of the CEOS reference pseudo-invariant calibration sites
Gyanesh Chander, Amit Angal, Xiaoxiong Xiong, Dennis L. Helder, Nischal Mishra, Taeyoung Choi, Aisheng Wu
2010, Conference Paper, SPIE Proceedings Volume 7826
Test sites are central to any future quality assurance and quality control (QA/QC) strategy. The Committee on Earth Observation Satellites (CEOS) Working Group for Calibration and Validation (WGCV) Infrared Visible Optical Sensors (IVOS) worked with collaborators around the world to establish a core set of CEOS-endorsed, globally distributed, reference standard...
Mercury in Indiana watersheds: Retrospective for 2001–2006
Martin R. Risch, Nancy T. Baker, Kathleen K. Fowler, Amanda L. Egler, David C. Lampe
2010, Professional Paper 1780
Information about total mercury and methylmercury concentrations in water samples and mercury concentrations in fish-tissue samples was summarized for 26 watersheds in Indiana that drain most of the land area of the State. Mercury levels were interpreted with information on streamflow, atmospheric mercury deposition, mercury emissions to the atmosphere, mercury...
Regional groundwater-flow model of the Lake Michigan Basin in support of Great Lakes Basin water availability and use studies
D. T. Feinstein, R. J. Hunt, H. W. Reeves
2010, Scientific Investigations Report 2010-5109
A regional groundwater-flow model of the Lake Michigan Basin and surrounding areas has been developed in support of the Great Lakes Basin Pilot project under the U.S. Geological Survey's National Water Availability and Use Program. The transient 2-million-cell model incorporates multiple aquifers and pumping centers that create water-level drawdown that...
Rocky Mountain snowpack physical and chemical data for selected sites, 2009
George P. Ingersoll, M. Alisa Mast, James M. Swank, Chelsea D. Campbell
2010, Data Series 498
The Rocky Mountain Snowpack program established a network of snowpack-sampling sites in the Rocky Mountain region from New Mexico to Montana to monitor the chemical content of snow and to understand the effects of regional atmospheric deposition. The U.S. Geological Survey, in cooperation with the National Park Service; the U.S....
Importance of record length with respect to estimating the 1-percent chance flood
Toby D. Feaster
2010, Conference Paper, 2010 South Carolina Water Resources Conference
U.S. Geological Survey (USGS) streamflow gages have been established in every State in the Nation, Puerto Rico, and the Trust Territory of the Pacific Islands. From these st reamflow records, estimates of the magnitude and frequency of floods are often developed and used to design transportation and water- conveyance structures...
Contamination of groundwater by the fumigants ethylene dibromide (EDB) and dibromochloropropane (DBCP) near McBee, South Carolina
James Landmeyer, Bruce G. Campbell
2010, Conference Paper, Proceedings of the 2010 South Carolina Water Resources Conference
McBee is a small town of about 700 people located in Chesterfield County, South Carolina, in the Sandhills region of the upper Coastal Plain. The halogenated organic compounds ethylene dibromide (EDB) and dibromochloropropane (DBCP) have been detected in several public and domestic supply and irrigation wells since 2002 at concentrations...
Geochemistry of Eagle Ford group source rocks and oils from the first shot field area, Texas
Janell D. Edman, Janet K. Pitman
Ursula Hammes, editor(s)
2010, Conference Paper, Gulf Coast Association of Geological Societies Transactions
Total organic carbon, Rock-Eval pyrolysis, and vitrinite reflectance analyses performed on Eagle Ford Group core and cuttings samples from the First Shot field area, Texas demonstrate these samples have sufficient quantity, quality, and maturity of organic matter to have generated oil. Furthermore, gas chromatography and biomarker analyses performed on Eagle...
Extrapolating growth reductions in fish to changes in population extinction risks: Copper and Chinook salmon.
Christopher A. Mebane, David L. Arthaud
2010, Human and Ecological Risk Assessment (16) 1026-1065
Fish commonly respond to stress, including stress from chemical exposures, with reduced growth. However, the relevance to wild populations of subtle and sometimes transitory growth reductions may not be obvious. At low-level, sustained exposures, Cu is one substance that commonly causes reduced growth but little mortality in laboratory toxicity tests...
The effects of land cover and land use change on the contemporary carbon balance of the arctic and boreal terrestrial ecosystems of northern Eurasia
Daniel J. Hayes, A. David McGuire, David W. Kicklighter, Todd J. Burnside, Jerry M. Melillo
2010, Book chapter, Eurasian Arctic land cover and land use in a changing climate
Recent changes in climate, disturbance regimes and land use and management systems in Northern Eurasia have the potential to disrupt the terrestrial sink of atmospheric CO2 in a way that accelerates global climate change. To determine the recent trends in the carbon balance of the arctic and boreal ecosystems of...
Modeling to evaluate the response of savanna-derived cropland to warming–drying stress and nitrogen fertilizers
Zhengxi Tan, Larry L. Tieszen, Shuguang Liu, E. Tachie-Obeng
2010, Climatic Change (100) 702-715
Many savannas in West Africa have been converted to croplands and are among the world’s regions most vulnerable to climate change due to deteriorating soil quality. We focused on the savanna-derived cropland in northern Ghana to simulate its sensitivity to projected climate change and nitrogen fertilization scenarios. Here we show...
Modeling the impacts of hunting on the population dynamics of red howler monkeys (Alouatta seniculus)
Ruscena Wiederholt, Eduardo Fernandez-Duque, Duane R. Diefenbach, Rasanayagam Rudran
2010, Ecological Modelling (221) 2482-2490
Overexploitation of wildlife populations occurs across the humid tropics and is a significant threat to the long-term survival of large-bodied primates. To investigate the impacts of hunting on primates and ways to mitigate them, we developed a spatially explicit, individual-based model for a landscape that included hunted and un-hunted areas....
Map correlation method: Selection of a reference streamgage to estimate daily streamflow at ungaged catchments
Stacey A. Archfield, Richard M. Vogel
2010, Water Resources Research (46)
Daily streamflow time series are critical to a very broad range of hydrologic problems. Whereas daily streamflow time series are readily obtained from gaged catchments, streamflow information is commonly needed at catchments for which no measured streamflow information exists. At ungaged catchments, methods to estimate daily streamflow time series typically...
Groundwater level and specific conductance monitoring at Marine Corps Base, Camp Lejeune, Onslow County, North Carolina, 2007-2008
Kristen Bukowski McSwain
2010, Open-File Report 2010-1103
The U.S. Geological Survey, in cooperation with the Marine Corps Base, Camp Lejeune, monitored water-resources conditions in the surficial, Castle Hayne, Peedee, and Black Creek aquifers in Onslow County, North Carolina, from November 2007 through September 2008. To comply with North Carolina Central Coastal Plain Capacity Use Area regulations, large-volume...
