Estimation of bed-material transport in the lower Chetco River, Oregon, water years 2009-2010
J. Rose Wallick, Jim E. O'Connor
2011, Open-File Report 2011-1123
This assessment of bed-material transport uses methods developed in a previous study (Wallick and others, 2010) to estimate bed-material flux at the USGS Chetco River streamflow gaging station located at flood-plain kilometer 15 (14400000). On the basis of regressions between daily mean flow and transport capacity, daily bed-material flux was...
Suspended-sediment and suspended-sand concentrations and loads for selected streams in the Mississippi River Basin, 1940-2009
David C. Heimann, Teri L. Cline, Lori M. Glaspie
2011, Data Series 593
This report presents suspended-sediment concentration and streamflow data, describes load-estimation techniques used in the computation of annual suspended-sediment loads, and presents annual suspended-sediment loads for 48 streamgaging stations within the Mississippi River Basin. Available published, unpublished, and computed annual total suspended-sediment and suspended-sand loads are presented for water years 1940...
Borehole geophysical investigation of a formerly used defense site, Machiasport, Maine, 2003-2006
Carole D. Johnson, Remo A. Mondazzi, Peter K. Joesten
2011, Scientific Investigations Report 2009-5120
The U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers, collected borehole geophysical logs in 18 boreholes and interpreted the data along with logs from 19 additional boreholes as part of an ongoing, collaborative investigation at three environmental restoration sites in Machiasport, Maine. These sites, located on...
Effects of recreational flow releases on natural resources of the Indian and Hudson Rivers in the Central Adirondack Mountains, New York, 2004-06
Barry P. Baldigo, C.I. Mulvihill, A.G. Ernst, B.A. Boisvert
2011, Scientific Investigations Report 2010-5223
The U.S. Geological Survey (USGS), the New York State Department of Environmental Conservation (NYSDEC), and Cornell University carried out a cooperative 2-year study from the fall of 2004 through the fall of 2006 to characterize the potential effects of recreational-flow releases from Lake Abanakee on natural resources in the Indian...
Water and rock geochemistry, geologic cross sections, geochemical modeling, and groundwater flow modeling for identifying the source of groundwater to Montezuma Well, a natural spring in central Arizona
Raymond H. Johnson, Ed DeWitt, Laurie Wirt, L. Rick Arnold, John D. Horton
2011, Open-File Report 2011-1063
The National Park Service (NPS) seeks additional information to better understand the source(s) of groundwater and associated groundwater flow paths to Montezuma Well in Montezuma Castle National Monument, central Arizona. The source of water to Montezuma Well, a flowing sinkhole in a desert setting, is poorly understood. Water emerges from...
Geology, Hydrology, and Water Quality of the Little Blackwater River Watershed, Dorchester County, Maryland, 2006-09
Brandon J. Fleming, Benjamin D. DeJong, Daniel J. Phelan
2011, Scientific Investigations Report 2011-5054
The Little Blackwater River watershed is a low-lying tidal watershed in Dorchester County, Maryland. The potential exists for increased residential development in a mostly agricultural watershed that drains into the Blackwater National Wildlife Refuge. Groundwater and surface-water levels were collected along with water-quality samples to document hydrologic and geochemical conditions...
Geologic framework and hydrogeology of the middle Carson River Basin, Eagle, Dayton, and Churchill Valleys, West-Central Nevada
Douglas K. Maurer
2011, Scientific Investigations Report 2011-5055
Changes in land use and water use and increasing development of water resources in the middle Carson River basin may affect flow of the river and, in turn, affect downstream water users dependent on sustained river flows to Lahontan Reservoir. The U.S. Geological Survey, in cooperation with the Bureau of...
Paleomagnetic correlation of surface and subsurface basaltic lava flows and flow groups in the southern part of the Idaho National Laboratory, Idaho, with paleomagnetic data tables for drill cores
Duane E. Champion, Mary K.V. Hodges, Linda C. Davis, Marvin A. Lanphere
2011, Scientific Investigations Report 2011-5049
Paleomagnetic inclination and polarity studies have been conducted on thousands of subcore samples from 51 coreholes located at and near the Idaho National Laboratory. These studies are used to paleomagnetically characterize and correlate successive stratigraphic intervals in each corehole to similar depth intervals in adjacent coreholes. Paleomagnetic results from 83...
Timing, distribution, amount, and style of Cenozoic extension in the northern Great Basin
Christopher D. Henry, Allen J. McGrew, Joseph P. Colgan, Arthur W. Snoke, Matthew E. Brueseke
2011, GSA Field Guides (21) 27-66
This field trip examines contrasting lines of evidence bearing on the timing and structural style of Cenozoic (and perhaps late Mesozoic) extensional deformation in northeastern Nevada. Studies of metamorphic core complexes in this region report extension beginning in the early Cenozoic or even Late Cretaceous, peaking in the Eocene and...
Data network, collection, and analysis in the Diamond Valley flow system, central Nevada
Lari A. Knochenmus, David L. Berger, Michael T. Moreo, J. LaRue Smith
2011, Open-File Report 2011-1089
Future groundwater development and its effect on future municipal, irrigation, and alternative energy uses in the Diamond Valley flow system are of concern for officials in Eureka County, Nevada. To provide a better understanding of the groundwater resources, the U.S. Geological Survey, in cooperation with Eureka County, commenced a multi-phase...
Review and interpretation of previous work and new data on the hydrogeology of the Schwartzwalder Uranium Mine and vicinity, Jefferson County, Colorado
Jonathan S. Caine, Raymond H. Johnson, Emily C. Wild
2011, Open-File Report 2011-1092
The Schwartzwalder deposit is the largest known vein type uranium deposit in the United States. Located about eight miles northwest of Golden, Colorado it occurs in Proterozoic metamorphic rocks and was formed by hydrothermal fluid flow, mineralization, and deformation during the Laramide Orogeny. A complex brittle fault zone hosts the...
Review of samples of tailings, soils, and stream sediments adjacent to and downstream from the Ruth Mine, Inyo County, California
James J. Rytuba, Christopher S. Kim, Daniel N. Goldstein
2011, Open-File Report 2011-1105
The Ruth Mine and mill are located in the western Mojave Desert in Inyo County, California (fig. 1). The mill processed gold-silver (Au-Ag) ores mined from the Ruth Au-Ag deposit, which is adjacent to the mill site. The Ruth Au-Ag deposit is hosted in Mesozoic intrusive rocks and is similar...
Review of samples of sediments, tailings, and waters adjacent to the Cactus Queen Gold Mine, Kern County, California
James J. Rytuba, Christopher S. Kim, Daniel N. Goldstein
2011, Open-File Report 2011-1034
The Cactus Queen Mine is located in the western Mojave Desert in Kern County, California. The Cactus Queen gold-silver (Au-Ag) deposit is similar to other Au-Ag deposits hosted in Miocene volcanic rocks that consist of silicic domes and associated flows, pyroclastic rocks, and subvolcanic intrusions. The volcanic rocks were emplaced...
Relation between flows and dissolved oxygen in the Roanoke River between Roanoke Rapids Dam and Jamesville, North Carolina, 2005-2009
Loren L. Wehmeyer, Chad R. Wagner
2011, Scientific Investigations Report 2011-5040
The relation between dam releases and dissolved-oxygen concentration, saturation and deficit, downstream from Roanoke Rapids Dam in North Carolina was evaluated from 2005 to 2009. Dissolved-oxygen data collected at four water-quality monitoring stations downstream from Roanoke Rapids Dam were used to determine if any statistical relations or discernible quantitative or...
Trace element, semivolatile organic, and chlorinated organic compound concentrations in bed sediments of selected streams at Fort Gordon, Georgia, February-April 2010
Lashun K. Thomas, Celeste A. Journey, Whitney J. Stringfield, Jimmy M. Clark, Paul M. Bradley, John B. Wellborn, Hagan Ratliff, Thomas A. Abrahamsen
2011, Open-File Report 2011-1067
A spatial survey of streams was conducted from February to April 2010 to assess the concentrations of major ions, selected trace elements, semivolatile organic compounds, organochlorine pesticides, and polychlorinated biphenyls associated with the bed sediments of surface waters at Fort Gordon military installation near Augusta, Georgia. This investigation expanded a...
Geophysical data collected from the St. Clair River between Michigan and Ontario, Canada (2008-016-FA)
Jane F. Denny, D.S. Foster, C.R. Worley, Barry J. Irwin
2011, Open-File Report 2010-1035
In 2008, the U.S. Geological Survey (USGS), Woods Hole Coastal and Marine Science Center (WHCMSC), in cooperation with the U.S. Army Corps of Engineers conducted a geophysical and sampling survey of the riverbed of the Upper St. Clair River between Port Huron, Mich., and Sarnia, Ontario, Canada. The objectives were...
Geomorphic Classification and Evaluation of Channel Width and Emergent Sandbar Habitat Relations on the Lower Platte River, Nebraska
Caroline M. Elliott
2011, Scientific Investigations Report 2011-5028
This report presents a summary of geomorphic characteristics extracted from aerial imagery for three broad segments of the Lower Platte River. This report includes a summary of the longitudinal multivariate classification in Elliott and others (2009) and presents a new analysis of total channel width and habitat variables. Three segments...
Benthic habitat classification in Lignumvitae Key Basin, Florida Bay, using the U.S. Geological Survey Along-Track Reef Imaging System (ATRIS)
C. D. Reich, D.G. Zawada, P.R. Thompson, C.E. Reynolds, A.H. Spear, D.K. Umberger, R.Z. Poore
2011, Open-File Report 2011-1066
The Comprehensive Everglades Restoration Plan (CERP) funded in partnership between the U.S. Army Corps of Engineers, South Florida Water Management District, and other Federal, local and Tribal members has in its mandate a guideline to protect and restore freshwater flows to coastal environments to pre-1940s conditions (CERP, 1999). Historic salinity...
Geophysical logging data from the Mills Gap Road area near Asheville, North Carolina
Melinda J. Chapman, Brad A. Huffman
2011, Data Series 538
In September 2009, the U.S. Geological Survey (USGS) was requested to assist the Environmental Protection Agency (EPA) Region 4 Superfund Section in the development of a conceptual groundwater flow model in the area of the Mills Gap Road contaminant investigation near Asheville, North Carolina (Site ID A4P5) through an Interagency...
Regional groundwater-flow model of the Redwall-Muav, Coconino, and alluvial basin aquifer systems of northern and central Arizona
D. R. Pool, Kyle W. Blasch, James B. Callegary, Stanley A. Leake, Leslie F. Graser
2011, Scientific Investigations Report 2010-5180
A numerical flow model (MODFLOW) of the groundwater flow system in the primary aquifers in northern Arizona was developed to simulate interactions between the aquifers, perennial streams, and springs for predevelopment and transient conditions during 1910 through 2005. Simulated aquifers include the Redwall-Muav, Coconino, and basin-fill aquifers. Perennial stream reaches...
River-aquifer exchanges in the Yakima River basin, Washington
J. J. Vaccaro
2011, Scientific Investigations Report 2011-5026
Five categories of data are analyzed to enhance understanding of river-aquifer exchanges-the processes by which water moves between stream channels and the adjacent groundwater system-in the Yakima River basin. The five datasets include (1) results of chemical analyses of water for tritium (3H, a radioactive isotope of hydrogen) and the...
Groundwater conditions and studies in Georgia, 2008-2009
Michael F. Peck, David C. Leeth, Jaime A. Painter
2011, Scientific Investigations Report 2011-5048
The U.S. Geological Survey collects groundwater data and conducts studies to monitor hydrologic conditions, better define groundwater resources, and address problems related to water supply, water use, and water quality. In Georgia, water levels were monitored continuously at 179 wells during 2008 and 181 wells during 2009. Because of missing...
Magnitude and Frequency of Floods for Urban and Small Rural Streams in Georgia, 2008
Anthony J. Gotvald, Andrew E. Knaak
2011, Scientific Investigations Report 2011-5042
A study was conducted that updated methods for estimating the magnitude and frequency of floods in ungaged urban basins in Georgia that are not substantially affected by regulation or tidal fluctuations. Annual peak-flow data for urban streams from September 2008 were analyzed for 50 streamgaging stations (streamgages) in Georgia and...
The chronology for the d18O record from Devils Hole, Nevada, extended into the Mid-Holocene
J.M. Landwehr, W.D. Sharp, T.B. Coplen, K.R. Ludwig, I.J. Winograd
2011, Open-File Report 2011-1082
This report presents the numeric values for the chronology of the paleoclimatically relevant mid-to-late Pleistocene record of the ratios of stable oxygen isotope (delta18O) in vein calcite from Devils Hole, Nev., which recently had been extended into the mid-Holocene. Dating was obtained using 230Th-234U-238U thermal ionization mass spectrometry. Devils Hole is...
WTAQ version 2-A computer program for analysis of aquifer tests in confined and water-table aquifers with alternative representations of drainage from the unsaturated zone
Paul M. Barlow, Allen F. Moench
2011, Techniques and Methods 3-B9
The computer program WTAQ simulates axial-symmetric flow to a well pumping from a confined or unconfined (water-table) aquifer. WTAQ calculates dimensionless or dimensional drawdowns that can be used with measured drawdown data from aquifer tests to estimate aquifer hydraulic properties. Version 2 of the program, which is described in this...
