An initial investigation of multidimensional flow and transverse mixing characteristics of the Ohio River near Cincinnati, Ohio
David J. Holtschlag
2009, Scientific Investigations Report 2009-5107
Two-dimensional hydrodynamic and transport models were applied to a 34-mile reach of the Ohio River from Cincinnati, Ohio, upstream to Meldahl Dam near Neville, Ohio. The hydrodynamic model was based on the generalized finite-element hydrodynamic code RMA2 to simulate depth-averaged velocities and flow depths. The generalized water-quality transport code RMA4...
Groundwater-flow model of the Ozark Plateaus aquifer system, northwestern Arkansas, southeastern Kansas, southwestern Missouri, and northeastern Oklahoma
John B. Czarnecki, Jonathan A. Gillip, Perry M. Jones, Daniel S. Yeatts
2009, Scientific Investigations Report 2009-5148
To assess the effect that increased water use is having on the long-term availability of groundwater within the Ozark Plateaus aquifer system, a groundwater-flow model was developed using MODFLOW 2000 for a model area covering 7,340 square miles for parts of Arkansas, Kansas, Missouri, and Oklahoma. Vertically the model is...
Evaluation of Structural Best Management Practices for Highway Runoff in Beaufort and Colleton Counties, South Carolina, 2005-2006
Kevin Conlon, Celeste Journey
2009, Fact Sheet 2009-3001
As part of the National Pollutant Discharge Elimination System (NPDES) permit program mandated in the Clean Water Act, the South Carolina Department of Transportation (SCDOT) is required to address the quality of stormwater runoff from state-maintained roadways. From 2005 to 2006, the SCDOT and the U.S. Geological Survey (USGS) worked...
Prevention, early detection and containment of invasive, nonnative plants in the Hawaiian Islands: current efforts and needs
Christoph Kueffer, Lloyd Loope
2009, Report
Introduction: Invasive, non-native plants (or environmental weeds) have long been recognized as a major threat to the native biodiversity of oceanic islands (Cronk & Fuller, 1995; Denslow, 2003). Globally, several hundred non-native plant species have been reported to have major impacts on natural areas on oceanic islands (Kueffer et al.,...
Water quality and phytoplankton communities in Lake Pontchartrain during and after the Bonnet Carre Spillway opening, April to October 2008, in Louisiana, USA
Scott V. Mize, Dennis K. Demcheck
2009, Geo-Marine Letters (29) 431-440
The Bonnet Carré Spillway, located 28 miles northwest of New Orleans, was constructed in the early 1930s as part of an integrated flood-control system for the lower Mississippi River system. From 11 April to 8 May 2008, Mississippi River water was diverted through the spillway into the 629-square-mile Lake Pontchartrain,...
A deployment of broadband seismic stations in two deep gold mines, South Africa
Arthur F. McGarr, Margaret S. Boettcher, Jon Peter B. Fletcher, Malcolm J. S. Johnston, R. Durrheim, S. Spottiswoode, A. Milev
2009, Conference Paper, 7th International Symposium on Rockburst and Seismicity in Mines (RaSiM7)
In-mine seismic networks throughout the TauTona and Mponeng gold mines provide precise locations and seismic source parameters of earthquakes. They also support small-scale experimental projects, including NELSAM (Natural Earthquake Laboratory in South African Mines), which is intended to record, at close hand, seismic rupture of a geologic fault that traverses...
Conservation planning for the coastal prairie region of Louisiana
Bradley A. Pickens, Sammy L. King, Bill Vermillion, Latimore Smith, Larry K. Allain
2009, Report
No abstract available....
Moosehorn National Wildlife Refuge Workbook Summary
Jessica M. Montag, Holly M. Stinchfield
2009, Open-File Report 2009-1167
The Moosehorn National Wildlife Refuge in eastern Maine is currently developing a comprehensive conservation plan (CCP) that will guide Refuge management over the next 15 years. Workbooks were provided to local residents as part of the scoping process in order to get feedback on current and future management issues from...
Effects of Water-Management Strategies on Water Resources in the Pawcatuck River Basin, Southwestern Rhode Island and Southeastern Connecticut
Robert F. Breault, Phillip J. Zarriello, Gardner C. Bent, John P. Masterson, Gregory E. Granato, J. Eric Scherer, Kathleen M. Crawley
2009, Circular 1340
The Pawcatuck River Basin in southwestern Rhode Island and southeastern Connecticut is an important high-quality water resource for domestic and public supplies, irrigation, recreation, and the aquatic ecosystem. Concerns about the effects of water withdrawals on aquatic habitat in the basin have prompted local, State, and Federal agencies to explore...
Data on mercury in water, bed sediment, and fish from streams across the United States, 1998-2005
Nancy J. Bauch, Lia C. Chasar, Barbara C. Scudder, Patrick W. Moran, Kerie J. Hitt, Mark E. Brigham, Michelle A. Lutz, Dennis A. Wentz
2009, Data Series 307
The U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) and Toxic Substances Hydrology Programs conducted the National Mercury Pilot Study in 1998 to examine relations of mercury (Hg) in water, bed sediment and fish in streams across the United States, including Alaska and Hawaii. Water and bed-sediment samples were analyzed...
The Regional Geochemistry of Soils and Willow in a Metamorphic Bedrock Terrain, Seward Peninsula, Alaska, 2005, and Its Possible Relation to Moose
L. P. Gough, P. J. Lamothe, R. F. Sanzolone, L.J. Drew, J.A.K. Maier
2009, Open-File Report 2009-1124
In 2005 willow leaves (all variants of Salix pulchra) and A-, B-, and C-horizon soils were sampled at 10 sites along a transect near the Quarry prospect and 11 sites along a transect near the Big Hurrah mine for the purpose of defining the spatial variability of elements and the...
Cross-shelf transport into nearshore waters due to shoaling internal tides in San Pedro Bay, CA
Marlene A. Noble, Burt Jones, Peter Hamilton, Jingping Xu, George Robertson, Leslie Rosenfeld, John Largier
2009, Continental Shelf Research (29) 1768-1785
In the summer of 2001, a coastal ocean measurement program in the southeastern portion of San Pedro Bay, CA, was designed and carried out. One aim of the program was to determine the strength and effectiveness of local cross-shelf transport processes. A particular objective was to assess the ability of...
Concentrations of polycyclic aromatic hydrocarbons (PAHs) in urban stormwater, Madison, Wisconsin, 2005–08
William R. Selbig
2009, Open-File Report 2009-1077
Concentrations of 18 PAH compounds were characterized from six urban source areas (parking lots, feeder street, collector street, arterial street, rooftop, and strip mall) around Madison, Wisconsin. Parking lots were categorized into those that were or were not sealed. On average, chrysene, fluoranthene, and pyrene were the dominant PAH compounds...
Mercury in fish, bed sediment, and water from streams across the United States, 1998-2005
Barbara C. Scudder, Lia C. Chasar, Dennis A. Wentz, Nancy J. Bauch, Mark E. Brigham, Patrick W. Moran, David P. Krabbenhoft
2009, Scientific Investigations Report 2009-5109
Mercury (Hg) was examined in top-predator fish, bed sediment, and water from streams that spanned regional and national gradients of Hg source strength and other factors thought to influence methylmercury (MeHg) bioaccumulation. Sampled settings include stream basins that were agricultural, urbanized, undeveloped (forested, grassland, shrubland, and wetland land cover), and...
Water Budgets of the Walker River Basin and Walker Lake, California and Nevada
Thomas J. Lopes, Kip K. Allander
2009, Scientific Investigations Report 2009-5157
The Walker River is the main source of inflow to Walker Lake, a closed-basin lake in west-central Nevada. The only outflow from Walker Lake is evaporation from the lake surface. Between 1882 and 2008, upstream agricultural diversions resulted in a lake-level decline of more than 150 feet and storage loss...
Gold deposit styles and placer gold characterisation in northern and east-central Madagascar
Peter E. J Pitfield, Michael T. Styles, Cliff D. Taylor, Roger M. Key, Wilfried Bauer Wilfried, A Vonimanitra Ralison Vonimanitra
2009, Conference Paper, Smart science for exploration and mining: Proceedings of the 10th Biennial SGA Meeting, Townsville, Australia 17th-20th August 2009
Microchemical characterisation of bedrock and placer gold grains from six gold districts within the Archaean domains and intervening Neoproterozoic Anaboriana-Manampotsy belt of northern and east-central Madagascar show few opaque inclusions (e.g pyrrhotite, Bi tellurides) but wide range of Ag contents (40wt%). Some districts exhibit multiple source populations of grains. The...
The source of Witwatersrand gold: Evidence from uraninite chemistry
Hartwig E. Frimmel, Poul Emsbo, Alan E. Koenig
2009, Conference Paper, Smart science for exploration and mining : proceedings of the 10th Biennial SGA Meeting, Townsville, Australia 17th-20th August 2009
An in-situ LA-ICP-MS study of different generations of uraninite from the Mesoarchaean Witwatersrand gold palaeoplacer deposits revealed unusually high Au concentrations in rounded, detrital uraninite grains but no detectable Au in secondary, hydrothermally mobilised uraninite. A Au-enriched uraninite-bearing magmatic host is suggested as a significant source for detrital gold in...
Geochemistry and geochronology of carbonate-hosted base metal deposits in the southern Brooks Range, Alaska: Temporal association with VMS deposits and metallogenic implications
Karen Kelly, John Slack, David Selby
2009, Conference Paper, Smart science for exploration and mining: Proceedings of the 10th Biennial SGA Meeting, Townsville, Australia 17th-20th August 2009
The Brooks Range contains enormous accumulations of zinc and copper, either as VMS or sediment-hosted deposits. The Ruby Creek and Omar deposits are Cu-Co stratabound deposits associated with dolomitic breccias. Numerous volcanogenic Cu-Zn (+/-Ag, Au) deposits are situated ~20 km north of the Ruby Creek deposit. The carbonate-hosted deposits consist...
Hydrologic Setting and Conceptual Hydrologic Model of the Walker River Basin, West-Central Nevada
Thomas J. Lopes, Kip K. Allander
2009, Scientific Investigations Report 2009-5155
The Walker River is the main source of inflow to Walker Lake, a closed-basin lake in west-central Nevada. Between 1882 and 2008, agricultural diversions resulted in a lake-level decline of more than 150 feet and storage loss of 7,400,000 acre-ft. Evaporative concentration increased dissolved solids from 2,500 to 17,000 milligrams...
High-Resolution Aeromagnetic Survey To Image Shallow Faults, Poncha Springs and Vicinity, Chaffee County, Colorado
V. J. S. Grauch, Benjamin J. Drenth
2009, Open-File Report 2009-1156
High-resolution aeromagnetic data were acquired over the town of Poncha Springs and areas to the northwest to image faults, especially where they are concealed. Because this area has known hot springs, faults or fault intersections at depth can provide pathways for upward migration of geothermal fluids or concentrate fracturing that...
Geologic Map of the Sulphur Mountain Quadrangle, Park County, Colorado
Robert G. Bohannon, Chester A. Ruleman
2009, Scientific Investigations Map 3082
The main structural element in the Sulphur Mountain quadrangle is the Elkhorn thrust. This northwest-trending fault is the southernmost structure that bounds the west side of the Late Cretaceous and early Tertiary Front Range basement-rock uplift. The Elkhorn thrust and the Williams Range thrust that occurs in the Dillon area...
Probability of Elevated Volatile Organic Compound (VOC) Concentrations in Groundwater in the Eagle River Watershed Valley-Fill Aquifer, Eagle County, North-Central Colorado, 2006-2007
Michael G. Rupert, Niel Plummer
2009, Data Series 461
This raster data set delineates the predicted probability of elevated volatile organic compound (VOC) concentrations in groundwater in the Eagle River watershed valley-fill aquifer, Eagle County, North-Central Colorado, 2006-2007. This data set was developed by a cooperative project between the U.S. Geological Survey, Eagle County, the Eagle River Water and...
Probability of Unmixed Young Groundwater (defined using chlorofluorocarbon-11 concentrations and tritium activities) in the Eagle River Watershed Valley-Fill Aquifer, Eagle County, North-Central Colorado, 2006-2007
Michael G. Rupert, Niel Plummer
2009, Data Series 460
This raster data set delineates the predicted probability of unmixed young groundwater (defined using chlorofluorocarbon-11 concentrations and tritium activities) in groundwater in the Eagle River watershed valley-fill aquifer, Eagle County, North-Central Colorado, 2006-2007. This data set was developed by a cooperative project between the U.S. Geological Survey, Eagle County, the...
Source, Transport, and Fate of Groundwater Contamination at Site 45, Marine Corps Recruit Depot, Parris Island, South Carolina
Don A. Vroblesky, Matthew D. Petkewich, James Landmeyer, Mark A. Lowery
2009, Scientific Investigations Report 2009-5161
Groundwater contamination by tetrachloroethene and its dechlorination products is present in two partially intermingled plumes in the surficial aquifer near a former dry-cleaning facility at Site 45, Marine Corps Recruit Depot, Parris Island, South Carolina. The northern plume originates from the vicinity of former above-ground storage tanks. Free-phase tetrachloroethene from...
Land-Cover Change in the Central Irregular Plains, 1973-2000
Krista A. Karstensen
2009, Open-File Report 2009-1159
Spearheaded by the Geographic Analysis and Monitoring Program of the U.S. Geological Survey (USGS) in collaboration with the U.S. Environmental Protection Agency (EPA) and the National Aeronautics and Space Administration (NASA), the Land Cover Trends is a research project focused on understanding the rates, trends, causes, and consequences of contemporary...
