Impacts of climate change on wintertime precipitation, snowmelt regime, surface runoff, and infiltration in the northeastern USA during the 21st century
Thomas G. Huntington, J. Sheffield, K. Hayhoe
2007, Conference Paper, Proceedings of the 64th Annual Eastern Snow Conference: 29 May - 1 June 2007, St. John's, Newfoundland, Canada
No abstract available....
Stratigraphy of Colorado River deposits in lower Mohave Valley, Arizona and California
Keith A. Howard, D.V. Malmon
2007, Conference Paper, Wild, Scenic and Rapid, a trip down the Colorado River trough: Field trip guide and abstracts from the 2007 Desert Symposium
Deposits in lower Mohave Valley and upper Topock Gorge near Topock, Arizona and Park Moabi, California record a succession of depositional and erosional events since late Miocene time that relate to the development of the Colorado River. Upper Miocene alluvial fans were deposited toward a depocenter east of the present...
Geophysical delineation of the freshwater/saline-water transition zone in the Barton Springs segment of the Edwards Aquifer, Travis and Hays Counties, Texas, September 2006
J.D. Payne, W.H. Kress, S.D. Shah, J.E. Stefanov, B.A. Smith, B.B. Hunt
2007, Scientific Investigations Report 2007-5244
During September 2006, the U.S. Geological Survey, in cooperation with the Barton Springs/Edwards Aquifer Conservation District, conducted a geophysical pilot study to determine whether time-domain electromagnetic (TDEM) sounding could be used to delineate the freshwater/saline-water transition zone in the Barton Springs segment of the Edwards aquifer in Travis and Hays...
Regionalized equations for bankfull-discharge and channel characteristics of streams in New York State — Hydrologic Region 3 east of the Hudson River
Christiane I. Mulvihill, Barry P. Baldigo
2007, Scientific Investigations Report 2007-5227
Equations that relate drainage area to bankfull discharge and channel characteristics (such as width, depth, and cross-sectional area) at gaged sites are needed to define bankfull discharge and channel characteristics at ungaged sites and can be used for stream-restoration and protection projects, stream-channel classification, and channel assessments. These equations are...
Southwest Exotic Mapping Program 2007: Occurrence summary and maps of select invasive, non-native plants in Arizona
Kathryn A. Thomas, Patricia Guertin
2007, Open-File Report 2007-1277
An important aspect of management of invasive, non-native plants (invasive plants) is information on the type, location, and magnitude of infestations. Regional development of this information requires an integrated program of data collection, management, and delivery. The Southwest Exotic Plant Mapping Program (SWEMP), coordinated through the U.S. Geological Survey’s Southwest...
Logs and scarp data from a paleoseismic investigation of the Surprise Valley fault zone, Modoc County, California
Stephen F. Personius, Anthony J. Crone, Michael N. Machette, David J. Lidke, Lee-Ann Bradley, Shannon Mahan
2007, Scientific Investigations Map 2983
This report contains field and laboratory data from a paleoseismic study of the Surprise Valley fault zone near Cedarville, California. The 85-km-long Surprise Valley fault zone forms the western active margin of the Basin and Range province in northeastern California. The down-to-the-east normal fault is marked by Holocene fault scarps...
Thermal Maturity of Pennsylvanian Coals and Coaly Shales, Eastern Shelf and Fort Worth Basin, Texas
Paul C. Hackley, Edgar H. Guevara, Tucker F. Hentz, Robert W. Hook
2007, Open-File Report 2007-1312
The U.S. Geological Survey and the Texas Bureau of Economic Geology are engaged in an ongoing collaborative study to characterize the organic composition and thermal maturity of Upper Paleozoic coal-bearing strata from the Eastern Shelf of the Midland basin and from the Fort Worth basin, north-central Texas. Data derived from...
Relations of principal components analysis site scores to algal-biomass, habitat, basin-characteristics, nutrient, and biological-community data in the Whitewater River and East Fork White River basins, Indiana, 2002
Brian J. Caskey, Jeffrey W. Frey, B. Scott Lowe
2007, Scientific Investigations Report 2007-5229
Data were gathered from May through September 2002 at 76 randomly selected sites in the Whitewater River and East Fork White River Basins, Indiana, for algal biomass, habitat, nutrients, and biological communities (fish and invertebrates). Basin characteristics (land use and drainage area) and biolog-ical-community attributes and metric scores were determined...
Hydrogeologic settings and ground-water flow simulations for regional studies of the Transport of Anthropogenic and Natural Contaminants to public-supply wells - Studies begun in 2001
Suzanne S. Paschke, editor(s)
2007, Professional Paper 1737-A
This study of the Transport of Anthropogenic and Natural Contaminants to public-supply wells (TANC study) is being conducted as part of the U.S. Geological Survey National Water Quality Assessment (NAWQA) Program and was designed to increase understanding of the most important factors to consider in ground-water vulnerability assessments. The seven...
Geologic assessment of undiscovered oil and gas resources of the eastern Great Basin Province, Nevada, Utah, Idaho, and Arizona
U.S. Geological Survey Eastern Great Basin Assessment Team
2007, Data Series 69-L
Introduction The purpose of the U.S. Geological Survey's (USGS) National Oil and Gas Assessment is to develop geologically based hypotheses regarding the potential for additions to oil and gas reserves in priority areas of the United States. The U.S. Geological Survey (USGS) recently completed an assessment of the undiscovered oil and...
Simulation of Ground-Water Flow and Areas Contributing Recharge to Production Wells in Contrasting Glacial Valley-Fill Settings, Rhode Island
Paul J. Friesz, Janet Radway Stone
2007, Scientific Investigations Report 2007-5133
Areas contributing recharge and sources of water to a production well field in the Village of Harrisville and to a production well field in the Town of Richmond were delineated on the basis of calibrated, steady-state ground-water-flow models representing average hydrologic conditions. The study sites represent contrasting glacial valley-fill settings....
Simulation and Particle-Tracking Analysis of Selected Ground-Water Pumping Scenarios at Vogtle Electric Generation Plant, Burke County, Georgia
Gregory S. Cherry, John S. Clarke
2007, Open-File Report 2007-1363
The source of ground water to production wells at Vogtle Electric Generation Plant (VEGP), a nuclear power plant in Burke County, Georgia, was simulated under existing (2002) and potential future pumping conditions using an existing U.S. Geological Survey (USGS) MODFLOW ground-water flow model of a 4,455-square-mile area in the Coastal...
Investigating atmospheric mercury with the U.S. Geological Survey Mobile Mercury Laboratory
Allan Kolker
2007, Fact Sheet 2007-3071
Atmospheric mercury is thought to be an important source of mercury present in fish, resulting in numerous local, statewide, tribal, and province-wide fish consumption advisories in the United States and Canada (U.S. Environmental Protection Agency, 2007a). To understand how mercury occurs in the atmosphere and its potential to be transferred...
Identifying nutrient sources to three lagoons at Ofu and Olosega, American Samoa using δ15N of benthic macroalgae
Virginia H. Garrison, Kevin D. Kroeger, Douglas Fenner, Peter Craig
2007, Marine Pollution Bulletin (54) 1830-1838
Degradation of nearshore habitats is a serious problem in some areas of American Samoa, such as in Pago Pago Harbor on Tutuila Island, and is a smaller but chronic problem in other areas. Sedimentation, pollution, nutrient enrichment from surface runoff or groundwater, and trampling are the major factors causing the...
Demersal fishes associated with Lophelia pertusa coral and hard-substrate biotopes on the continental slope, northern Gulf of Mexico
Kenneth J. Sulak, Brooks R. Allen, Kirsten E. Luke, April D. Norem, Michael T. Randall, Andrew J. Quaid, George E. Yeargin, Jana M. Miller, William M. Harden, John H. Caruso, Steve W. Ross
2007, Bulletin of Marine Science (81) 65-92
The demersal fish fauna of Lophelia pertusa (Linnaeus, 1758) coral reefs and associated hard-bottom biotopes was investigated at two depth horizons in the northern Gulf of Mexico using a manned submersible and remote sampling. The Viosca Knoll fauna consisted of at least 53 demersal fish species, 37 of which were documented by...
Geological studies of the Salmon River suture zone and adjoining areas, west-central Idaho and eastern Oregon
Mel A. Kuntz, Lawrence W. Snee, editor(s)
2007, Professional Paper 1738
The papers in this volume describe petrologic, structural, and geochemical studies related to geographic areas adjacent to and including the Salmon River suture zone. We therefore start this volume by defining and giving a general description of that suture zone. The western margin of the North American continent was the setting...
Assessment of undiscovered oil and gas resources in Tertiary strata of the Gulf Coast, 2007
Russell F. Dubiel, Janet K. Pitman, Ofori N. Pearson, Peter D. Warwick, Alexander W. Karlsen, James L. Coleman Jr., Paul C. Hackley, Daniel O. Hayba, Sharon M. Swanson, Ronald R. Charpentier, Troy A Cook, Timothy R. Klett, Richard M. Pollastro, Christopher J. Schenk
2007, Fact Sheet 2007-3066
Using a geology-based assessment methodology, the U.S. Geological Survey estimated a mean of 113.7 trillion cubic feet of undiscovered natural gas, a mean of 690 million barrels of undiscovered oil, and a mean of 3.7 billion barrels of undiscovered natural gas liquids in onshore lands and State waters of...
High-resolution topographic, bathymetric, and oceanographic data for the Pleasure Point area, Santa Cruz County, California: 2005-2007
Curt D. Storlazzi, Patrick L. Barnard, Brian D. Collins, David P. Finlayson, Nadine E. Golden, Gerry A. Hatcher, Robert E. Kayen, Peter Ruggiero
2007, Open-File Report 2007-1270
The County of Santa Cruz Department of Public Works and the County of Santa Cruz Redevelopment Agency requested the U.S. Geological Survey (USGS) Western Coastal and Marine Geology Team (WCMG) to provide baseline geologic and oceanographic information on the coast and inner shelf at Pleasure Point, Santa Cruz County, California....
Nitrogen isotopes as indicators of NOx source contributions to atmospheric nitrate deposition across the midwestern and northeastern United States
Emily M. Elliott, Carol Kendall, Scott D. Wankel, Douglas A. Burns, E.W. Boyer, K. Harlin, Daniel J Bain, T.J. Butler
2007, Environmental Science & Technology (41) 7661-7667
Global inputs of NOx are dominated by fossil fuel combustion from both stationary and vehicular sources and far exceed natural NOx sources. However, elucidating NOx sources to any given location remains a difficult challenge, despite the need for this information to develop sound regulatory and mitigation strategies. We present results from a regional-scale...
Science Review for the Scott Bar Salamander (Plethodon asupak) and the Siskiyou Mountains Salamander (P. stormi): Biology, Taxonomy, Habitat, and Detection Probabilities/Occupancy
Douglas J. DeGross, R. Bruce Bury
2007, Open-File Report 2007-1352
The Plethodon elongatus Complex in the Klamath-Siskiyou Ecoregion of southern Oregon and northern California includes three species: the Del Norte salamander, Plethodon elongatus; the Siskiyou Mountains salamander, P. stormi; and the Scott Bar salamander, P. asupak. This review aims to summarize the current literature and information available on select topics...
High-resolution bathymetry and topography of south San Francisco Bay, California
Amy C. Foxgrover, Peter Dartnell, Bruce E. Jaffe, John Y. Takekawa, Nicole D. Athearn
2007, Scientific Investigations Map 2987
This map consists of a view of the southern end of San Francisco bay with the water 'removed.' The image is overlain by a set of six figures: - Figure 1. Perspective view looking southeast down south San Francisco Bay. - Figure 2. Perspective view looking east with the Diablo Range in...
Analysis of ground-water flow in the Madison aquifer using fluorescent dyes injected in Spring Creek and Rapid Creek near Rapid City, South Dakota, 2003-04
Larry D. Putnam, Andrew J. Long
2007, Scientific Investigations Report 2007-5137
The Madison aquifer, which contains fractures and solution openings in the Madison Limestone, is used extensively for water supplies for the city of Rapid City and other suburban communities in the Rapid City, S. Dak., area. The 48 square-mile study area includes the west-central and southwest parts of Rapid City...
Hydrology, Water Quality, and Surface- and Ground-Water Interactions in the Upper Hillsborough River Watershed, West-Central Florida
J.T. Trommer, L. A. Sacks, E. L. Kuniansky
2007, Scientific Investigations Report 2007-5121
A study of the Hillsborough River watershed was conducted between October 1999 through September 2003 to characterize the hydrology, water quality, and interaction between the surface and ground water in the highly karstic uppermost part of the watershed. Information such as locations of ground-water recharge and discharge, depth of the...
Sea-floor character and sedimentary processes of Great Round Shoal Channel, offshore Massachusetts
Lawrence J. Poppe, Seth D. Ackerman, David S. Foster, Dann S. Blackwood, S. Jeffress Williams, M. S. Moser, H.F. Stewart, K.A. Glomb
2007, Open-File Report 2007-1138
The imagery, interpretive data layers, and data presented herein were derived from multibeam echo-sounder and sidescan-sonar data collected in the vicinity of Great Round Shoal Channel, the main passage through shoals located at the eastern entrance to Nantucket Sound, Massachusetts, and from the stations occupied to verify these acoustic data...
Areas Contributing Recharge to Wells in the Tafuna-Leone Plain, Tutuila, American Samoa
Scot K. Izuka, John M. Perreault, Todd K. Presley
2007, Scientific Investigations Report 2007-5167
To address the concerns about the potential for contamination of drinking-water wells in the Tafuna-Leone Plain, Tutuila, American Samoa, a numerical ground-water flow model was developed and used to delineate areas contributing recharge to the wells (ACRWs). Surveys and analyses were conducted to obtain or compile certain essential hydrogeologic information...
