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...
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...
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...
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 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...
Geologic Map of the Santa Barbara Coastal Plain Area, Santa Barbara County, California
Scott A. Minor, Karl S. Kellogg, Richard G. Stanley, Larry D. Gurrola, Edward A. Keller, Theodore R. Brandt
2009, Scientific Investigations Map 3001
This report presents a newly revised and expanded digital geologic map of the Santa Barbara coastal plain area at a compilation scale of 1:24,000 (one inch on the map to 2,000 feet on the ground)1 and with a horizontal positional accuracy of at least 20 m. The map depicts the...
Geophysical Studies in the Vicinity of the Warner Mountains and Surprise Valley, Northeast California, Northwest Nevada, and Southern Oregon
David A. Ponce, Jonathan M. G. Glen, Anne E. Egger, Claire Bouligand, Janet T. Watt, Robert L. Morin
2009, Open-File Report 2009-1157
From May 2006 to August 2007, the U.S. Geological Survey (USGS) collected 793 gravity stations, about 102 line-kilometers of truck-towed and ground magnetometer data, and about 325 physical-property measurements in northeastern California, northwestern Nevada, and southern Oregon. Gravity, magnetic, and physical-property data were collected to study regional crustal structures and...
Probability of Elevated Nitrate 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 459
This raster data set delineates the predicted probability of elevated nitrate 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 Sanitation District, the...
Anthropogenic organic compounds in source and finished groundwater of community water systems in the Piedmont Physiographic Province, Potomac River Basin, Maryland and Virginia, 2003-04
William S.L. Banks, Betzaida Reyes
2009, Scientific Investigations Report 2009-5064
A source- and finished-water-quality assessment of groundwater was conducted in the Piedmont Physiographic Province of Maryland and Virginia in the Potomac River Basin during 2003-04 as part of the U.S. Geological Survey's National Water-Quality Assessment Program. This assessment used a two-phased approach to sampling that allowed investigators to evaluate the...
Black and Brown Bear Activity at Selected Coastal Sites in Glacier Bay National Park and Preserve, Alaska: A Preliminary Assessment Using Noninvasive Procedures
Steve Partridge, Tom Smith, Tania Lewis
2009, Open-File Report 2009-1169
A number of efforts in recent years have sought to predict bear activity in various habitats to minimize human disturbance and bear/human conflicts. Alaskan coastal areas provide important foraging areas for bears (Ursus americanus and U. arctos), particularly following den emergence when there may be no snow-free foraging alternatives. Additionally,...
Sources, transport, and storage of sediment at selected sites in the Chesapeake Bay Watershed
Allen C. Gellis, Cliff R. Hupp, Milan J. Pavich, Jurate M. Landwehr, William S.L. Banks, Bernard E. Hubbard, Michael J. Langland, Jerry C. Ritchie, Joanna M. Reuter
2009, Scientific Investigations Report 2008-5186
The Chesapeake Bay Watershed covers 165,800 square kilometers and is supplied with water and sediment from five major physiographic provinces: Appalachian Plateau, Blue Ridge, Coastal Plain, Piedmont, and the Valley and Ridge. Suspended-sediment loads measured in the Chesapeake Bay Watershed showed that the Piedmont Physiographic Province has the highest rates...
Total Petroleum Systems and Geologic Assessment of Oil and Gas Resources in the Powder River Basin Province, Wyoming and Montana
2009, Data Series 69-U
The U.S. Geological Survey completed an assessment of the undiscovered oil and gas potential of the Powder River Basin in 2006. The assessment of undiscovered oil and gas used the total petroleum system concept, which includes mapping the distribution of potential source rocks and known petroleum accumulations and determining the...
Boundary of the Eagle River watershed valley-fill aquifer, Eagle County, north-central Colorado, 2006-2007
Michael G. Rupert, Niel Plummer
2009, Data Series 458
This vector data set delineates the approximate boundary of the Eagle River watershed valley-fill aquifer (ERWVFA). This data set was developed by a cooperative project between the U.S. Geological Survey, Eagle County, the Eagle River Water and Sanitation District, the Town of Eagle, the Town of Gypsum, and the Upper...
Finding Trapped Miners by Using a Prototype Seismic Recording System Made from Music-Recording Hardware
Thomas L. Pratt
2009, Open-File Report 2009-1095
The goal of this project was to use off-the-shelf music recording equipment to build and test a prototype seismic system to listen for people trapped in underground chambers (mines, caves, collapsed buildings). Previous workers found that an array of geophones is effective in locating trapped miners; displaying the data graphically,...
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...
Impact of wildfire on levels of mercury in forested watershed systems: Voyageurs National Park, Minnesota
Laurel G. Woodruff, Mark B. Sandheinrich, Mark E. Brigham, William F. Cannon
2009, Scientific Investigations Report 2009-5151
Atmospheric deposition of mercury to remote lakes in mid-continental and eastern North America has increased approximately threefold since the mid-1800s (Swain and others, 1992; Fitzgerald and others, 1998; Engstrom and others, 2007). As a result, concerns for human and wildlife health related to mercury contamination have become widespread. Despite an...
Using a StreamPro acoustic doppler current profiler in moving-bed conditions: Problems and solutions
David S. Mueller, Mike S. Rehmel, Chad R. Wagner
2009, Conference Paper, 33rd IAHR congress: Water engineering for a sustainable environment
No abstract available....
Laboratory evaluation of an OTT acoustic digital current meter and a SonTek Laboratory acoustic Doppler velocimeter
T.B. Vermeyen, Kevin A. Oberg, Patrick Ryan Jackson
2009, Conference Paper
Recently, an acoustic current meter known as the OTT * acoustic digital current meter (ADC) was introduced as an alternative instrument for stream gaging measurements. The Bureau of Reclamation and the U.S. Geological Survey collaborated on a side- by-side evaluation of the ADC and a SonTek/YSI acoustic Doppler velocimeter (ADV)....
Discharge and other hydraulic measurements for characterizing the hydraulics of Lower Congo River
Kevin Oberg, John M. Shelton, Ned Gardiner, P. Ryan Jackson
2009, Conference Paper, 33rd IAHR congress: Water engineering for a sustainable environment
The first direct measurements of discharge of the Lower Congo River below Malebo Pool and upstream from Kinganga, Democratic Republic of Congo (DRC) were made in July 2008 using acoustic Doppler current profilers, differential GPS, and echo sounders. These measurements were made in support of research that is attempting to...
Digital representation of 1:1,000,000-scale hydrographic areas of the Great Basin
Susan G. Buto
2009, Data Series 457
Hydrographic areas (HA) in Nevada were delineated by the U.S. Geological Survey (USGS) and Nevada Division of Water Resources in the late 1960s for scientific and administrative purposes. The official HA names, numbers, and boundaries continue to be used in USGS scientific reports and Nevada State Division of Water Resources...
Occurrence of viable avian influenza viruses in water and bed sediments from selected water bodies along the Atlantic Flyway, February and May 2006 and January 2007
Melinda S. Dalton, Lisa M. Stewart, S. Ip
2009, Open-File Report 2009-1161
Water and bed-sediment samples were collected from selected water bodies along the Atlantic Flyway and analyzed for the presence of viable avian influenza viruses. Samples were collected during February and May 2006 and January 2007 at U.S. Fish and Wildlife Service National Wildlife Refuges in Georgia, South Carolina, North Carolina,...
The effect of channel shape, bed morphology, and shipwrecks on flow velocities in the Upper St. Clair River
Jonathan A. Czuba, Kevin Oberg, Jim Best, Daniel R. Parsons
2009, Conference Paper, 33rd IAHR congress: Water engineering for a sustainable environment
In the Great Lakes of North America, the St. Clair River is the major outlet of Lake Huron and conveys water to Lake St. Clair which then flows to Lake Erie. One major topic of interest is morphological change in the St. Clair River and its impact on water levels...
