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Page 1810, results 45226 - 45250

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Not all publications have extents, not all extents are completely accurate
Probability and volume of potential postwildfire debris flows in the 2010 Fourmile burn area, Boulder County, Colorado
Barbara C. Ruddy, Michael R. Stevens, Kristine Verdin
2010, Open-File Report 2010-1244
This report presents a preliminary emergency assessment of the debris-flow hazards from drainage basins burned by the Fourmile Creek fire in Boulder County, Colorado, in 2010. Empirical models derived from statistical evaluation of data collected from recently burned basins throughout the intermountain western United States were used to estimate the...
Geologic map of the Fraser 7.5-minute quadrangle, Grand County, Colorado
Ralph R. Shroba, Bruce Bryant, Karl S. Kellogg, Paul K. Theobald, Theodore R. Brandt
2010, Scientific Investigations Map 3130
The geologic map of the Fraser quadrangle, Grand County, Colo., portrays the geology along the western boundary of the Front Range and the eastern part of the Fraser basin near the towns of Fraser and Winter Park. The oldest rocks in the quadrangle include gneiss, schist, and plutonic rocks of...
Individual growth and reproductive behavior in a newly established population of northern snakehead (Channa argus), Potomac River, USA
Andrew M. Gascho Landis, Nicolas W. R. Lapointe, Paul L. Angermeier
2010, Hydrobiologia (661) 123-131
Northern snakehead (Channa argus) were first found in the Potomac River in 2004. In 2007, we documented feeding and reproductive behavior to better understand how this species is performing in this novel environment. From April to October, we used electrofishing surveys to collect data on growth, condition, and...
Carbon dioxide dangers demonstration model
Dina Venezky, Stephen Wessells
2010, Open-File Report 2010-1174
Carbon dioxide is a dangerous volcanic gas. When carbon dioxide seeps from the ground, it normally mixes with the air and dissipates rapidly. However, because carbon dioxide gas is heavier than air, it can collect in snowbanks, depressions, and poorly ventilated enclosures posing a potential danger to people and other...
Caldera demonstration model
Dina Venezky, Stephen Wessells
2010, Open-File Report 2010-1173
A caldera is a large, usually circular volcanic depression formed when magma is withdrawn or erupted from a shallow underground magma reservoir. It is often difficult to visualize how calderas form. This simple experiment using flour, a balloon, tubing, and a bicycle pump, provides a helpful visualization for caldera formation....
Occurrence and attempted mitigation of carbon dioxide in a home constructed on reclaimed coal-mine spoil, Pike County, Indiana
Bret A. Robinson
2010, Scientific Investigations Report 2010-5157
In recent years carbon dioxide intrusion has become recognized as a potentially serious health threat where homes are constructed on or near reclaimed surface coal mines. When carbon dioxide invades the living space of a home, it can collect near the floor, displace the oxygen there, and produce an oxygen-deficient...
The tectono-thermal evolution of the Waterbury dome, western Connecticut, based on U-Pb and 40Ar/39Ar ages
Craig Dietsch, Michael J. Kunk, John Aleinikoff, John F. Sutter
2010, GSA Memoirs (206) 141-182
The Waterbury dome, located in the Rowe-Hawley zone in western Connecticut, is a triple window exposing three terranes: parautochthonous or allochthonous peri-Laurentian rocks in its lowest level 1, allochthonous rocks of the Rowe-Hawley zone in its middle level 2, and allochthonous cover rocks, including Silurian-Devonian rocks of the...
The potential influence of changing climate on the persistence of salmonids of the inland west
A.L. Haak, J.E. Williams, D. Isaak, A. Todd, C.C. Muhlfeld, J. L. Kershner, R. E. Gresswell, S. W. Hostetler, H.M. Neville
2010, Open-File Report 2010-1236
The Earth's climate warmed steadily during the 20th century, and mean annual air temperatures are estimated to have increased by 0.6°C (Intergovernmental Panel on Climate Change, 2007). Although many cycles of warming and cooling have occurred in the past, the most recent warming period is unique in its rate and...
Evaluation of aquatic biota in relation to environmental characteristics measured at multiple scales in agricultural streams of the Midwest: 1993-2004
Julie A. Hambrook Berkman, Barbara C. Scudder, Michelle A. Lutz, Mitchell A. Harris
2010, Scientific Investigations Report 2010-5051
This study evaluated the relations between algal, invertebrate, and fish assemblages and physical environmental characteristics of streams at the reach, segment, and watershed scale in agricultural settings in the Midwest. The 86 stream sites selected for study were in predominantly agricultural watersheds sampled as part of the U.S. Geological Survey's...
Simulation of groundwater flow and effects of groundwater irrigation on stream base flow in the Elkhorn and Loup River basins, Nebraska, 1895-2055: Phase Two
Jennifer S. Stanton, Steven M. Peterson, Michael N. Fienen
2010, Scientific Investigations Report 2010-5149
Regional groundwater-flow simulations for a 30,000-square-mile area of the High Plains aquifer, referred to collectively as the Elkhorn-Loup Model, were developed to predict the effects of groundwater irrigation on stream base flow in the Elkhorn and Loup River Basins, Nebraska. Simulations described the stream-aquifer system from predevelopment through 2005 [including...
Determination of time-of-travel, dispersion characteristics, and oxygen reaeration coefficients during low streamflows--Lower Tacony/Frankford Creek, Philadelphia, Pennsylvania
Lisa A. Senior, Matthew C. Gyves
2010, Scientific Investigations Report 2010-5195
Time-of-travel, dispersion characteristics, and oxygen reaeration coefficients were determined by use of dye and gas tracing for a 2-mile reach of Tacony/Frankford Creek in Philadelphia, southeastern Pennsylvania. The reach frequently has concentrations of dissolved oxygen (DO) below the water-quality standard of 4 milligrams per liter during warm months. Several large...
Bathymetric and streamflow data for the Quillayute, Dickey, and Bogachiel Rivers, Clallam County, Washington, April-May 2010
Jonathan A. Czuba, Christiana R. Barnas, Thomas E. McKenna, Gregory Justin, Karen L. Payne
2010, Data Series 537
To facilitate the development of a two-dimensional hydrodynamic model of the Quillayute River estuary, the U.S. Geological Survey conducted a bathymetric survey of the Quillayute River and its tributaries, upstream of the La Push Harbor. Streamflow also was measured concurrent with the bathymetric survey. This report documents the bathymetric and...
Columbia spotted frog (Rana luteiventris) in southeastern Oregon: A survey of historical localities, 2009
Chistopher A. Pearl, Stephanie K. Galvan, M. J. Adams, Brome McCreary
2010, Open-File Report 2010-1235
The Columbia spotted frog (Rana luteiventris) occupies a large range in western North America and is comprised of at least three genetic units. Concern exists regarding the status of the Great Basin populations in Oregon, Idaho, and Nevada. We surveyed target and nearby alternate sites on public lands in southeastern...
Low-flow characteristics of the Mississippi River upstream from the Twin Cities Metropolitan Area, Minnesota, 1932-2007
Erich Kessler, David L. Lorenz
2010, Scientific Investigations Report 2010-5163
The U.S. Geological Survey, in cooperation with the Metropolitan Council, conducted a study to characterize regional low flows during 1932?2007 in the Mississippi River upstream from the Twin Cities metropolitan area in Minnesota and to describe the low-flow profile of the Mississippi River between the confluence of the Crow River...
Hydrogeology and water quality in the Snake River alluvial aquifer at Jackson Hole Airport, Jackson, Wyoming, September 2008–June 2009
Peter R. Wright
2010, Scientific Investigations Report 2010-5172
The hydrogeology and water quality of the Snake River alluvial aquifer, at the Jackson Hole Airport in northwest Wyoming, was studied by the U.S. Geological Survey in cooperation with the Jackson Hole Airport Board and the Teton Conservation District during September 2008-June 2009. Hydrogeologic conditions were characterized using data collected...
Proceedings of the U.S. Geological Survey Interdisciplinary Microbiology Workshop, Estes Park, Colorado, October 15-17, 2008
Kay Marano-Briggs, editor(s)
2010, Scientific Investigations Report 2010-5146
Preface A U.S. Geological Survey Interdisciplinary Microbiology Workshop was held in Estes Park, Colorado, on October 15-17, 2008. Participants came from all USGS regions and disciplines. This report contains abstracts from 36 presentations and 35 poster sessions and notes from 5 breakout sessions. The seven presentation topics follow: Ecology of wildlife and...
Characteristics of sediment data and annual suspended-sediment loads and yields for selected lower Missouri River mainstem and tributary stations, 1976-2008
David C. Heimann, Patrick P. Rasmussen, Teri L. Cline, Lori M. Pigue, Holly R. Wagner
2010, Data Series 530
Suspended-sediment data from 18 selected surface-water monitoring stations in the lower Missouri River Basin downstream from Gavins Point Dam were used in the computation of annual suspended-sediment and suspended-sand loads for 1976 through 2008. Three methods of suspended-sediment load determination were utilized and these included the subdivision method, regression of...
Monitoring and assessment of ocean acidification in the Arctic Ocean-A scoping paper
Lisa L. Robbins, Kimberly K. Yates, Richard Feely, Victoria Fabry
2010, Open-File Report 2010-1227
Carbon dioxide (CO2) in the atmosphere is absorbed at the ocean surface by reacting with seawater to form a weak, naturally occurring acid called carbonic acid. As atmospheric carbon dioxide increases, the concentration of carbonic acid in seawater also increases, causing a decrease in ocean pH and carbonate mineral saturation...
Quality of surface water in Missouri, water year 2009
Miya N. Barr
2010, Open-File Report 2010-1233
The U.S. Geological Survey, in cooperation with the Missouri Department of Natural Resources, designs and operates a series of monitoring stations on streams throughout Missouri known as the Ambient Water-Quality Monitoring Network. During the 2009 water year (October 1, 2008, through September 30, 2009), data were collected at 75 stations-69...
Groundwater-quality data for the Sierra Nevada study unit, 2008: Results from the California GAMA program
Jennifer L. Shelton, Miranda S. Fram, Cathy M. Munday, Kenneth Belitz
2010, Data Series 534
Groundwater quality in the approximately 25,500-square-mile Sierra Nevada study unit was investigated in June through October 2008, as part of the Priority Basin Project of the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The GAMA Priority Basin Project is being conducted by the U.S. Geological Survey (USGS) in cooperation with...
Occurrence and sources of Escherichia coli in metropolitan St. Louis streams, October 2004 through September 2007
Donald H. Wilkison, Jerri V. Davis
2010, Scientific Investigations Report 2010-5150
The occurrence and sources of Escherichia coli (E. coli), one of several fecal indicator bacteria, in metropolitan St. Louis streams known to receive nonpoint source runoff, occasional discharges from combined and sanitary sewers, and treated wastewater effluent were investigated from October 2004 through September 2007. Three Missouri River sites, five Mississippi...
Database of recent tsunami deposits
Robert Peters, Bruce E. Jaffe
2010, Open-File Report 2010-1172
This report describes a database of sedimentary characteristics of tsunami deposits derived from published accounts of tsunami deposit investigations conducted shortly after the occurrence of a tsunami. The database contains 228 entries, each entry containing data from up to 71 categories. It includes data from 51 publications covering 15 tsunamis...