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Page 1568, results 39176 - 39200

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Hydrologic and water-quality conditions in the lower Apalachicola-Chattahoochee-Flint and parts of the Aucilla-Suwannee-Ochlockonee River basins in Georgia and adjacent parts of Florida and Alabama during drought conditions, July 2011
Debbie W. Gordon, Michael F. Peck, Jaime A. Painter
2012, Scientific Investigations Report 2012-5179
As part of the U.S. Department of the Interior sustainable water strategy, WaterSMART, the U.S. Geological Survey documented hydrologic and water-quality conditions in the lower Apalachicola-Chattahoochee-Flint and western and central Aucilla-Suwannee-Ochlockonee River basins in Alabama, Florida, and Georgia during low-flow conditions in July 2011. Moderate-drought conditions prevailed in this area...
Helicopter electromagnetic survey of the Model Land Area, Southeastern Miami-Dade County, Florida
David V. Fitterman, Maria Deszcz-Pan, Scott T. Prinos
2012, Open-File Report 2012-1176
This report describes a helicopter electromagnetic survey flown over the Model Land Area in southeastern Miami-Dade County, Florida, to map saltwater intrusion in the Biscayne aquifer. The survey, which is located south and east of Florida City, Florida, covers an area of 115 square kilometers with a flight-line spacing of...
Classifications for Coastal Wetlands Planning, Protection and Restoration Act site-specific projects: 2008 and 2009
William R. Jones, Adrienne Garber
2012, Data Series 701
The Coastal Wetlands Planning, Protection and Restoration Act (CWPPRA) funds over 100 wetland restoration projects across Louisiana. Integral to the success of CWPPRA is its long-term monitoring program, which enables State and Federal agencies to determine the effectiveness of each restoration effort. One component of this monitoring program is the...
Aspect control of water movement on hillslopes near the rain–snow transition of the Colorado Front Range
Eve-Lyn S. Hinckley, Brian A. Ebel, R. T. Barnes, R.S Anderson, M.W. Williams, S.P. Anderson
2012, Hydrological Processes (28) 74-85
In the Colorado Front Range, forested catchments near the rain–snow transition are likely to experience changes in snowmelt delivery and subsurface water transport with climate warming and associated shifts in precipitation patterns. Snowpack dynamics are strongly affected by aspect: Lodgepole pine forested north‐facing slopes develop a seasonal snowpack, whereas Ponderosa...
Predicted nitrate and arsenic concentrations in basin-fill aquifers of the Southwestern United States
David W. Anning, Angela P. Paul, Tim S. McKinney, Jena M. Huntington, Laura M. Bexfield, Susan A. Thiros
2012, Scientific Investigations Report 2012-5065
The National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS) is conducting a regional analysis of water quality in the principal aquifer systems across the United States. The Southwest Principal Aquifers (SWPA) study is building a better understanding of the susceptibility and vulnerability of basin-fill aquifers in the...
Digital spatial data for predicted nitrate and arsenic concentrations in basin-fill aquifers of the Southwest Principal Aquifers study area
Tim S. McKinney, David W. Anning
2012, Data Series 698
This product "Digital spatial data for predicted nitrate and arsenic concentrations in basin-fill aquifers of the Southwest Principal Aquifers study area" is a 1:250,000-scale vector spatial dataset developed as part of a regional Southwest Principal Aquifers (SWPA) study (Anning and others, 2012). The study examined the vulnerability of basin-fill aquifers...
Digital spatial data for observed, predicted, and misclassification errors for observations in the training dataset for nitrate and arsenic concentrations in basin-fill aquifers in the Southwest Principal Aquifers study area
Tim S. McKinney, David W. Anning
2012, Data Series 697
This product "Digital spatial data for observed, predicted, and misclassification errors for observations in the training dataset for nitrate and arsenic concentrations in basin-fill aquifers in the Southwest Principal Aquifers study area" is a 1:250,000-scale point spatial dataset developed as part of a regional Southwest Principal Aquifers (SWPA) study (Anning...
Profile measurements and data from the 2011 Optics, Acoustics, and Stress In Situ (OASIS) project at the Martha's Vineyard Coastal Observatory
Christopher R. Sherwood, Patrick J. Dickhudt, Marinna A. Martini, Ellyn T. Montgomery, Emmanuel S. Boss
2012, Open-File Report 2012-1178
This report documents data collected by the U.S. Geological Survey (USGS) for the Coastal Model Applications and Field Measurements project under the auspices of the U.S. Navy Office of Naval Research Optics, Acoustics, and Stress In Situ (OASIS) Project. The objective of the measurements was to relate optical and acoustic...
Development of a flood-warning system and flood-inundation mapping in Licking County, Ohio
Chad J. Ostheimer
2012, Scientific Investigations Report 2012-5137
Digital flood-inundation maps for selected reaches of South Fork Licking River, Raccoon Creek, North Fork Licking River, and the Licking River in Licking County, Ohio, were created by the U.S. Geological Survey (USGS), in cooperation with the Ohio Department of Transportation; U.S. Department of Transportation, Federal Highway Administration; Muskingum Watershed...
Water chemistry of surface waters affected by the Fourmile Canyon wildfire, Colorado, 2010-2011
R. Blaine McCleskey, Jeffrey H. Writer, Sheila F. Murphy
2012, Open-File Report 2012-1104
In September 2010, the Fourmile Canyon fire burned about 23 percent of the Fourmile Creek watershed in Boulder County, Colo. Water-quality sampling of Fourmile Creek began within a month after the wildfire to assess its effects on surface-water chemistry. Water samples were collected from five sites along Fourmile Creek (above,...
Comparison of streamflow and water-quality data collection techniques for the Saginaw River, Michigan
C. J. Hoard, D. J. Holtschlag, J.W. Duris, D.A. James, D.J. Obenauer
2012, Scientific Investigations Report 2012-5150
In 2009, the Michigan Department of Environmental Quality and the U.S. Geological Survey developed a plan to compare the effect of various streamgaging and water-quality collection techniques on streamflow and stream water-quality data for the Saginaw River, Michigan. The Saginaw River is the primary contributor of surface runoff to Saginaw...
Using genetic research to inform imperiled and invasive species management
Margaret E. Hunter, Rachel J. Pawlitz
2012, Fact Sheet 2012-3017
The long-term viability of species and populations is related to their potential to migrate, reproduce, and adapt to environmental changes. In the southeast United States, U.S. Geological Survey (USGS) scientists are providing resource managers with genetic information to improve the long-term survival and sustainability of the Nation's aquatic species. Research...
Survival and migration route probabilities of juvenile Chinook salmon in the Sacramento-San Joaquin River Delta during the winter of 2009-10
Russell W. Perry, Jason G. Romine, Scott J. Brewer, Peter E. LaCivita, William N. Brostoff, Eric D. Chapman
2012, Open-File Report 2012-1200
Juvenile Chinook salmon (Oncorhynchus tshawytscha) emigrating from natal tributaries of the Sacramento River may use a number of migration routes to negotiate the Sacramento-San Joaquin River Delta (hereafter, "the Delta"), each of which may influence their probability of surviving. We applied a mark-recapture model to data from acoustically tagged juvenile...
2011 Georgiana Slough non-physical barrier performance evaluation project report
Ryan R. Reeves, Jacob McQuirk, Khalid Ameri, Russell W. Perry, Jason G. Romine, Theresa L. Liedtke, Jon R. Burau, Aaron R. Blake, Chris Fitzer, Natalie Smith, Steve Pagliughi, Sam Johnston, Kevin Kumagai, Kenneth Cash
2012, Report
The Sacramento River and its tributaries support populations of anadromous fish species including winter-run, spring-run, fall-run, and late fall–run Chinook salmon (Oncorhynchus tshawytscha); and steelhead (O. mykiss). Several of these species are listed as threatened or endangered under the California Endangered Species Act (CESA), federal Endangered Species Act (ESA), or...
Local-area-enhanced, 2.5-meter resolution natural-color and color-infrared satellite-image mosaics of the Balkhab mineral district in Afghanistan: Chapter B in Local-area-enhanced, high-resolution natural-color and color-infrared satellite-image mosaics of mineral districts in Afghanistan
Philip A. Davis, Laura E. Cagney
2012, Data Series 709-B
The U.S. Geological Survey (USGS), in cooperation with the U.S. Department of Defense Task Force for Business and Stability Operations, prepared databases for mineral-resource target areas in Afghanistan. The purpose of the databases is to (1) provide useful data to ground-survey crews for use in performing detailed assessments of the...
Groundwater, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona - 2010-2011
Jamie P. Macy, Christopher R. Brown, Jessica R. Anderson
2012, Open-File Report 2012-1102
The Navajo (N) aquifer is an extensive aquifer and the primary source of groundwater in the 5,400-square-mile Black Mesa area in northeastern Arizona. Availability of water is an important issue in northeastern Arizona because of continued water requirements for industrial and municipal use by a growing population and because of...
On the relative roles of hydrology, salinity, temperature, and root productivity in controlling soil respiration from coastal swamps (freshwater)
Ken W. Krauss, Julie L. Whitbeck, Rebecca J. Howard
2012, Plant and Soil (358) 265-274
Background and aims Soil CO2 emissions can dominate gaseous carbon losses from forested wetlands (swamps), especially those positioned in coastal environments. Understanding the varied roles of hydroperiod, salinity, temperature, and root productivity on soil respiration is important in discerning how carbon balances may shift as freshwater swamps retreat inland with...
Potential pollutant sources in a Choptank River (USA) subwatershed and the influence of land use and watershed characteristics
Gabriela T. Nino de Guzman, Cathleen J. Hapeman, Kusuma Prabhakara, Eton E. Codling, Daniel R. Shelton, Clifford P. Rice, W. Dean Hively, Gregory W. McCarty, Megan W. Lang, Alba Torrents
2012, Science of the Total Environment (430) 270-279
Row-crop and poultry production have been implicated as sources of water pollution along the Choptank River, an estuary and tributary of the Chesapeake Bay. This study examined the effects of land use, subwatershed characteristics, and climatic conditions on the water quality parameters of a subwatershed in the Choptank River watershed....
Landscape consequences of natural gas extraction in Bradford and Washington Counties, Pennsylvania, 2004-2010
E.T. Slonecker, L.E. Milheim, C.M. Roig-Silva, A.R. Malizia, D.A. Marr, G.B. Fisher
2012, Open-File Report 2012-1154
Increased demands for cleaner burning energy, coupled with the relatively recent technological advances in accessing unconventional hydrocarbon-rich geologic formations, led to an intense effort to find and extract natural gas from various underground sources around the country. One of these sources, the Marcellus Shale, located in the Allegheny Plateau, is...
Bathymetry and capacity of Blackfoot Reservoir, Caribou County, Idaho, 2011
Molly S. Wood, Kenneth D. Skinner, Ryan L. Fosness
2012, Scientific Investigations Map 3229
The U.S. Geological Survey (USGS), in cooperation with the Shoshone-Bannock Tribes, surveyed the bathymetry and selected above-water sections of Blackfoot Reservoir, Caribou County, Idaho, in 2011. Reservoir operators manage releases from Government Dam on Blackfoot Reservoir based on a stage-capacity relation developed about the time of dam construction in the...
Characterization of subsurface geologic structure for potential water resources near the Villages of Moenkopi, Arizona, 2009--2010
Jamie P. Macy
2012, Scientific Investigations Report 2012-5180
The Hopi Tribe depends on groundwater as their primary drinking-water source in the area of the Villages of Moenkopi, in northeastern Arizona. Growing concerns of the potential for uranium contamination at the Moenkopi water supply wells from the Tuba City Landfill prompted the need for an improved understanding of subsurface...
Groundwater flow and water budget in the surficial and Floridan aquifer systems in east-central Florida
Nicasio Sepulveda, Claire R. Tiedeman, Andrew M. O’Reilly, Jeffrey B. Davis, Patrick Burger
2012, Scientific Investigations Report 2012-5161
A numerical transient model of the surficial and Floridan aquifer systems in east-central Florida was developed to (1) increase the understanding of water exchanges between the surficial and the Floridan aquifer systems, (2) assess the recharge rates to the surficial aquifer system from infiltration through the unsaturated zone and (3)...
Publications of the Volcano Hazards Program 2010
Manuel Nathenson
2012, Open-File Report 2012-1177
The Volcano Hazards Program of the U.S. Geological Survey (USGS) is part of the Geologic Hazards Assessments subactivity as funded by Congressional appropriation. Investigations are carried out in the USGS and with cooperators at the Alaska Division of Geological and Geophysical Surveys, University of Alaska Fairbanks Geophysical Institute, University of...
Earthquakes and faults in southern California (1970-2010)
Benjamin M. Sleeter, James P. Calzia, Stephen R. Walter
2012, Scientific Investigations Map 3222
The map depicts both active and inactive faults and earthquakes magnitude 1.5 to 7.3 in southern California (1970–2010). The bathymetry was generated from digital files from the California Department of Fish And Game, Marine Region, Coastal Bathymetry Project. Elevation data are from the U.S. Geological Survey National Elevation Database. Landsat...