Preliminary Assessment of the Hydrogeology and Groundwater Availability in the Metamorphic and Siliciclastic Fractured-Rock Aquifer Systems of Warren County, Virginia
David L. Nelms, Roger M. Moberg
2010, Scientific Investigations Report 2010-5190
Expanding development and the prolonged drought from 1999 to 2002 drew attention to the quantity and sustainability of the groundwater resources in Warren County, Virginia. 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...
Local sensitivity analysis for inverse problems solved by singular value decomposition
M. C. Hill, B. T. Nolan
2010, Book, American Geophysical Union, Fall Meeting 2010
Local sensitivity analysis provides computationally frugal ways to evaluate models commonly used for resource management, risk assessment, and so on. This includes diagnosing inverse model convergence problems caused by parameter insensitivity and(or) parameter interdependence (correlation), understanding what aspects of the model and data contribute to measures of uncertainty, and identifying...
Sediment transport on Cape Sable, Everglades National Park, Florida
Mark Zucker, Carrie Boudreau
2010, Conference Paper, Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and Sedimentation for a Changing Future: Existing and Emerging Issues: Las Vegas, NV, June 27-July 1, 2010
The Cape Sable peninsula is located on the southwestern tip of the Florida peninsula within Everglades National Park (ENP). Lake Ingraham, the largest lake within Cape Sable, is now connected to the Gulf of Mexico and western Florida Bay by canals built in the early 1920's. Some of these canals...
Groundwater sampling
Qingren Wang, Rafael Munoz-Carpena, Adam Foster, Kati W. Migliaccio
Yuncong Li, Kati Migliaccio, editor(s)
2010, Book chapter, Water quality concepts, sampling, and analyses
Groundwater is protected in most areas as it is a primary source of drinking water. In the United States, 50% of the population relies on groundwater supplies (Reilly et al., 2008). Groundwater sampling in the United States became commonplace in the 20th century as contaminated water resources became apparent and...
Current distribution of North American river otters in central and eastern Oklahoma, with seven new county records
Dominic A. Barrett, David M. Leslie Jr.
2010, Occasional Papers of the Museum at Texas Tech University (294) 1-13
In 1984 and 1985, the Oklahoma Department of Wildlife Conservation reintroduced North American river otters (Lontra canadensis) from coastal Louisiana into eastern Oklahoma. Those reintroductions and immigration from Arkansas and possibly northeastern Texas allowed river otters to become reestablished in eastern Oklahoma. Our goals were to determine the contemporary distribution...
A comparison between SWI and SEAWAT: the importance of dispersion, inversion and vertical anisotropy
Alyssa M. Dausman, Christian D. Langevin, Mark Bakker, Frans Schaars
2010, Conference Paper, Proceedings of the 21st Salt Water Intrusion Meeting, Azores, Portugal, 2010
SWI and SEAWAT are both computer codes designed to model variable-density systems. One of the options in SWI is to model Dupuit interface flow, where freshwater and seawater are separated by an interface. In this paper we compare seawater intrusion model results of SWI to model results of SEAWAT, which...
Surface water discharge and salinity monitoring of coastal estuaries in Everglades National Park, USA, in support of the Comprehensive Everglades Restoration Plan
Jeff Woods
2010, Book, Proceedings of the 3rd International Perspective on Current & Future State of Water Resources & the Environment
Discharge and salinity were measured along the southwest and the southeast coast of Florida in Everglades National Park (ENP) within several rivers and creeks from 1996 through 2008. Data were collected using hydro-acoustic instruments and continuous water-quality monitors at fixed monitoring stations. Water flowed through ENP within two distinct drainage...
Effect of sea-level rise on future coastal groundwater resources in southern Florida, USA
Christian D. Langevin, Michael R. Zygnerski, Jeremy T. White, Joseph D. Hughes
2010, Conference Paper, Proceedings of the 21st Salt Water Intrusion Meeting, Azores, Portugal, 2010
An existing variable‐density groundwater flow and solute transport model, developed for the northern part of Broward County, Florida, was used to predict the effect of sealevel rise on future coastal groundwater resources. Using average annual conditions from 2005, simulations were performed for 100 years into the future using four different...
Using a cloud to replenish parched groundwater modeling efforts
Randall J. Hunt, Joseph Luchette, Willem A. Schreuder, James O. Rumbaugh, John Doherty, Matthew J. Tonkin, Douglas B. Rumbaugh
2010, Ground Water (48) 360-365
Groundwater models can be improved by introduction of additional parameter flexibility and simultaneous use of soft-knowledge. However, these sophisticated approaches have high computational requirements. Cloud computing provides unprecedented access to computing power via the Internet to facilitate the use of these techniques. A modeler can create, launch, and terminate “virtual”...
Reproductive ecology and habitat use of pacific Black Scoters (Melanitta nigra americana) nesting on the Yukon-Kuskokwim Delta, Alaska
Jason L. Schamber, Fred J. Broerman, Paul L. Flint
2010, Waterbirds (33) 129-139
Abundance indices of Black Scoters (Melanitta nigra. americana) breeding in Alaska indicate a long-term population decline without obvious cause (s). However, few life history data are available for the species in North America. In 2001–2004, information was collected on nesting habitat and reproductive parameters (i.e. components of productivity) from a...
Geophysical investigations at Hidden Dam, Raymond, California — Flow simulations
Burke J. Minsley, Scott Ikard
2010, Open-File Report 2010-1153
Numerical flow modeling and analysis of observation-well data at Hidden Dam are carried out to supplement recent geophysical field investigations at the site (Minsley and others, 2010). This work also is complementary to earlier seepage-related studies at Hidden Dam documented by Cedergren (1980a, b). Known seepage areas on the northwest...
Kinetics of viral shedding provide insights into the epidemiology of viral hemorrhagic septicemia in Pacific herring
Paul K. Hershberger, Jacob L. Gregg, James R. Winton, Courtney Grady, Rachael Collins
2010, Marine Ecology Progress Series (400) 187-193
Losses from infectious diseases are an important component of natural mortality among marine fish species, but factors controlling the ecology of these diseases and their potential responses to anthropogenic changes are poorly understood. We used viral hemorrhagic septicemia virus (VHSV) and a laboratory stock of Pacific herring Clupea pallasii to...
Avoidance of strobe lights by zooplankton
Martin J. Hamel, Nathan S. Richards, Michael L. Brown, Steven R. Chipps
2010, Lake and Reservoir Management (26) 212-216
Underwater strobe lights can influence the behavior and distribution of fishes and are increasingly used as a technique to divert fish away from water intake structures on dams. However, few studies examine how strobe lights may affect organisms other than targeted species. To gain insight on strobe lighting effects on...
Interactions between walleyes and smallmouth bass in a Missouri River reservoir with consideration of the influence of temperature and prey
Melissa R. Wuellner, Steven R. Chipps, David W. Willis, Wells E. Adams Jr.
2010, North American Journal of Fisheries Management (30) 445-463
Walleyes Sander vitreus are the most popular fish among South Dakota anglers, but smallmouth bass Micropterus dolomieu were introduced to provide new angling opportunities. Some walleye anglers have reported reductions in the quality of walleye fisheries since the introduction of smallmouth bass and attribute this to the consumption of young walleyes by smallmouth bass...
Mercury-contaminated hydraulic mining debris in San Francisco Bay
Robin M. Bouse, Christopher C. Fuller, Samuel N. Luoma, Michelle I. Hornberger, Bruce E. Jaffe, Richard E. Smith
2010, San Francisco Estuary and Watershed Science (8) 1-28
The hydraulic gold-mining process used during the California Gold Rush and in many developing countries today contributes enormous amounts of sediment to rivers and streams. Commonly, accompanying this sediment are contaminants such as elemental mercury and cyanide used in the gold extraction process. We show that some of the mercurycontaminated...
Alternative aircraft anti-icing formulations with reduced aquatic toxicity and biochemical oxygen demand
Harris Gold, Kevin Joback, Steven Geis, George Bowman, Dean Mericas, Steven R. Corsi, Lee Ferguson
2010, Report
The current research was conducted to identify alternative aircraft and pavement deicer and anti-icer formulations with improved environmental characteristics compared to currently used commercial products (2007). The environmental characteristics of primary concern are the biochemical oxygen demand (BOD) and aquatic toxicity of the fully formulated products. Except when the distinction...
Effect of historic land cover change on runoff curve number estimation in Iowa
Loren L. Wehmeyer, Frank H. Weirich
2010, Journal of Hydrologic Engineering (15) 692-695
Within three decades of European-descended settlers arriving in Iowa, much of the land cover across the state was transformed from prairie and forest to farmland, patches of forest, and urbanized areas. Between 1832 and 1859, the General Land Office surveyed the state of Iowa to aid in the disbursement of...
Hydrogeology of the Markagunt Plateau, Southwestern Utah
Lawrence E. Spangler
2010, Book chapter, UGA Guidebook
The Markagunt Plateau, in southwestern Utah, lies at an altitude of about 9,500 feet and is capped primarily by Quaternary-age basalt that overlies Eocene-age freshwater limestone of the Claron Formation. Over large parts of the Markagunt Plateau, dissolution of the Claron limestone and subsequent collapse of the overlying basalt have...
The use of scenario analysis to assess water ecosystem services in response to future land use change in the Willamette River Basin, Oregon
M. Hernandez, W. G. Kepner, D. G. Goodrich, Darius J. Semmens
2010, Book chapter
Human pressures on the natural resources of the United States have resulted in many unintended changes in our ecosystems, e.g., loss of biodiversity, habitat degradation, increases in the number of endangered species, and increases in contamination and water pollution. Environmental managers are concerned about broad-scale changes in land use and...
Delaware Water Gap; a geology classroom
Jack B. Epstein
2010, Conference Paper, New York State Geological Association 82nd annual meeting; field trip guidebook
No abstract available....
NEXRAD tracks wintering waterfowl
Lori A. Randall, Wylie C. Barrow Jr.
2010, Gulf Crossings (14) 9-9
No abstract available....
Yellowstone River Compact Commission fifty-ninth annual report 2010
Wayne R. Berkas
2010, Report
No abstract available....
Geological sources of radionuclides and arsenic in Triassic age rift-valley sediments (Newark Supergroup) and implications for distribution in groundwater in Mercer County, New Jersey
Zoltan Szabo, Julia Barringer, Steve Spayd
2010, Conference Paper, Geology of the greater Trenton area and its impact on the capital city: Twenty-seventh Annual Meeting Geological Association of New Jersey : October 8-9, 2010: Field guide and proceedings
No abstract available....
GAGES: A stream gage database for evaluating natural and alteredflow conditions in the conterminous United States
James A. Falcone, Daren M. Carlisle, David M. Wolock, Michael R. Meador
2010, Ecology (91) 621-621
Stream flow is a controlling element in the ecology of rivers and streams. Knowledge of the natural flow regime facilitates the assessment of whether specific hydrologic attributes have been altered by humans in a particular stream and the establishment of specific goals for stream-flow restoration. Because most streams are ungaged...
Streamflow gain-loss characteristics of Elkhead Creek downstream from Elkhead Reservoir near Craig, Colorado, 2009
Barbara C. Ruddy
2010, Scientific Investigations Report 2010-5198
The U.S. Geological Survey (USGS), in cooperation with the Colorado Water Conservation Board, the Upper Colorado River Endangered Fish Recovery Program (UCREFRP), Colorado Division of Water Resources, and City of Craig studied the gain-loss characteristics of Elkhead Creek downstream from Elkhead Reservoir to the confluence with the Yampa River during...
