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Page 62, results 1526 - 1550

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Not all publications have extents, not all extents are completely accurate
Use of surrogate technologies to estimate suspended sediment in the Clearwater River, Idaho, and Snake River, Washington, 2008-10
Molly S. Wood, Gregg N. Teasdale
2013, Scientific Investigations Report 2013-5052
Elevated levels of fluvial sediment can reduce the biological productivity of aquatic systems, impair freshwater quality, decrease reservoir storage capacity, and decrease the capacity of hydraulic structures. The need to measure fluvial sediment has led to the development of sediment surrogate technologies, particularly in locations where streamflow alone is not...
Water-quality conditions, and constituent loads and yields in the Cambridge drinking-water source area, Massachusetts, water years 2005–07
Kirk P. Smith
2013, Scientific Investigations Report 2013-5039
The source water area for the drinking-water supply of the city of Cambridge, Massachusetts, encompasses major transportation corridors, as well as large areas of light industrial, commercial, and residential land use. Because of ongoing development in the drinking-water source area, the Cambridge water supply has the potential to be affected...
Nature's Notebook 2012: State of the data
Jherime Kellermann, T.M. Crimmins, E.G. Denny, C.A.F. Enquist, K.L. Gerst, A.H. Rosemartin, Jake F. Weltzin
2013, USA-NPN Technical Series 2013-001
In 2012, 2,045 observers contributed 1,592 sites to the NPDb, encompassing all 50 states, the U.S. Virgin Islands, and Puerto Rico.  At the close of 2012 the NPDb contained a total of over 1.6 million phenophase status records.  More than half of these records were submitted in 2012.  Observers submitted records on 547...
Comment on “Apatite 4He/3He and (U-Th)/He Evidence for an Ancient Grand Canyon”
Karl E. Karlstrom, John P. Lee, Shari A. Kelley, Ryan S. Crow, Richard A. Young, Ivo Lucchitta, L. Sue Beard, Rebecca Dorsey, Jason Ricketts, William R. Dickinson, Laura Crossey
2013, Science (340) 143-143
Flowers and Farley (Reports, 21 December 2012, p. 1616; published online 29 November 2012) propose that the Grand Canyon is 70 million years old. Starkly contrasting models for the age of the Grand Canyon—70 versus 6 million years—can be reconciled by a shallow paleocanyon that was carved in the eastern...
An evaluation of seepage gains and losses in Indian Creek Reservoir, Ada County, Idaho, April 2010–November 2011
Marshall L. Williams, Alexandra B. Etheridge
2013, Scientific Investigations Report 2013-5047
The U.S. Geological Survey, in cooperation with the Idaho Department of Water Resources, conducted an investigation on Indian Creek Reservoir, a small impoundment in east Ada County, Idaho, to quantify groundwater seepage into and out of the reservoir. Data from the study will assist the Idaho Water Resources Department’s Comprehensive...
Stochastic empirical loading and dilution model (SELDM) version 1.0.0
Gregory E. Granato
2013, Techniques and Methods 4-C3
The Stochastic Empirical Loading and Dilution Model (SELDM) is designed to transform complex scientific data into meaningful information about the risk of adverse effects of runoff on receiving waters, the potential need for mitigation measures, and the potential effectiveness of such management measures for reducing these risks. The U.S. Geological...
Shallow groundwater in the Matanuska-Susitna Valley, Alaska—Conceptualization and simulation of flow
Colin P. Kikuchi
2013, Scientific Investigations Report 2013-5049
The Matanuska-Susitna Valley is in the Upper Cook Inlet Basin and is currently undergoing rapid population growth outside of municipal water and sewer service areas. In response to concerns about the effects of increasing water use on future groundwater availability, a study was initiated between the Alaska Department of Natural...
Simulation of salinity intrusion along the Georgia and South Carolina coasts using climate-change scenarios
Paul Conrads, Edwin A. Roehl Jr., Ruby C. Daamen, John B. Cook
2013, Scientific Investigations Report 2013-5036
Potential changes in climate could alter interactions between environmental and societal systems and adversely affect the availability of water resources in many coastal communities. Changes in streamflow patterns in conjunction with sea-level rise may change the salinity-intrusion dynamics of coastal rivers. Several municipal water-supply intakes are located along the Georgia...
Water quality of streams draining abandoned and reclaimed mined lands in the Kantishna Hills area, Denali National Park and Preserve, Alaska, 2008–11
Timothy P. Brabets, Robert T. Ourso
2013, Scientific Investigations Report 2013-5048
The Kantishna Hills are an area of low elevation mountains in the northwest part of Denali National Park and Preserve, Alaska. Streams draining the Kantishna Hills are clearwater streams that support several species of fish and are derived from rain, snowmelt, and subsurface aquifers. However, the water quality of many...
Statistical classification of hydrogeologic regions in the fractured rock area of Maryland and parts of the District of Columbia, Virginia, West Virginia, Pennsylvania, and Delaware
Brandon J. Fleming, Andrew E. LaMotte, Andrew J. Sekellick
2013, Scientific Investigations Report 2013-5043
Hydrogeologic regions in the fractured rock area of Maryland were classified using geographic information system tools with principal components and cluster analyses. A study area consisting of the 8-digit Hydrologic Unit Code (HUC) watersheds with rivers that flow through the fractured rock area of Maryland and bounded by the Fall...
CRT--Cascade Routing Tool to define and visualize flow paths for grid-based watershed models
Wesley R. Henson, Rose L. Medina, C. Justin Mayers, Richard G. Niswonger, R.S. Regan
2013, Techniques and Methods 6-D2
The U.S. Geological Survey Cascade Routing Tool (CRT) is a computer application for watershed models that include the coupled Groundwater and Surface-water FLOW model, GSFLOW, and the Precipitation-Runoff Modeling System (PRMS). CRT generates output to define cascading surface and shallow subsurface flow paths for grid-based model domains. CRT requires a...
Paleomagnetic correlation and ages of basalt flow groups in coreholes at and near the Naval Reactors Facility, Idaho National Laboratory, Idaho
Duane E. Champion, Linda C. Davis, Mary K.V. Hodges, Marvin A. Lanphere
2013, Scientific Investigations Report 2013-5012
Paleomagnetic inclination and polarity studies were conducted on subcore samples from eight coreholes located at and near the Naval Reactors Facility (NRF), Idaho National Laboratory (INL). These studies were used to characterize and to correlate successive stratigraphic basalt flow groups in each corehole to basalt flow groups with similar paleomagnetic...
Geophysical and hydrologic analysis of an earthen dam site in southern Westchester County, New York
Anthony Chu, Frederick Stumm, Peter K. Joesten, Michael L. Noll
2013, Scientific Investigations Report 2012-5247
Ninety percent of the drinking water for New York City passes through the Hillview Reservoir facility in the City of Yonkers, Westchester County, New York. In the past, several seeps located downslope from the reservoir have flowed out from the side of the steepest slope at the southern end of...
Geodatabase and characteristics of springs within and surrounding the Trinity aquifer outcrops in northern Bexar County, Texas, 2010--11
Allan K. Clark, Diana E. Pedraza, Robert R. Morris, Travis J. Garcia
2013, Data Series 750
The U.S. Geological Survey, in cooperation with the Trinity Glen Rose Groundwater Conservation District, the Edwards Aquifer Authority, and the San Antonio River Authority, developed a geodatabase of springs within and surrounding the Trinity aquifer outcrops in a 331-square-mile study area in northern Bexar County, Texas. The data used to...
Hydrologic data and groundwater flow simulations in the vicinity of Long Lake, Indiana Dunes National Lakeshore, near Gary, Indiana
David C. Lampe, E. Randall Bayless
2013, Scientific Investigations Report 2013-5003
The U.S. Geological Survey (USGS) collected data and simulated groundwater flow to increase understanding of the hydrology and the effects of drainage alterations to the water table in the vicinity of Long Lake, near Gary, Indiana. East Long Lake and West Long Lake (collectively known as Long Lake) make up...
United States-Mexican Borderlands: Facing tomorrow's challenges through USGS science
Randall G. Updike, Eugene G. Ellis, William R. Page, Melanie J. Parker, Jay B. Hestbeck, William F. Horak, editor(s)
2013, Circular 1380
Along the nearly 3,200 kilometers (almost 2,000 miles) of the United States–Mexican border, in an area known as the Borderlands, we are witnessing the expression of the challenges of the 21st century. This circular identifies several challenge themes and issues associated with life and the environment in the Borderlands, listed...
Nutrient concentrations and loads and Escherichia coli densities in tributaries of the Niantic River estuary, southeastern Connecticut, 2005 and 2008–2011
John R. Mullaney
2013, Scientific Investigations Report 2013-5008
Nutrient concentrations and loads and Escherichia coli (E. coli) densities were studied in 2005 and from 2008 through 2011 in water-quality samples from tributaries of the Niantic River Estuary in southeastern Connecticut. Data from a water-quality survey of the base flow of subbasins in the watershed in June 2005 were...
Evaluation of the groundwater-flow model for the Ohio River alluvial aquifer near Carrollton, Kentucky, updated to conditions in September 2010
Michael D. Unthank
2013, Scientific Investigations Report 2013-5032
The Ohio River alluvial aquifer near Carrollton, Ky., is an important water resource for the cities of Carrollton and Ghent, as well as for several industries in the area. The groundwater of the aquifer is the primary source of drinking water in the region and a highly valued natural resource...
Chapter A: Summary and findings
Morris L. Maslia, Rene J. Suarez-Soto, Jason B. Sautner, Barbara A. Anderson, L. Elliott Jones, Robert E. Faye, Mustafa M. Aral, Jiabao Guan, Wonyong Jang, Ilker T. Telci, Walter M. Grayman, Frank J. Bove, Perri Z. Ruckart, Susan M. Moore
2013, Report, Analyses and historical reconstruction of groundwater flow, contaminant fate and transport, and distribution of drinking water within the service areas of the Hadnot Point and Holcomb Boulevard water treatment plants and vicinities, U.S. Marine Corps Base Camp Lejeune, North Carolina
The Agency for Toxic Substances and Disease Registry (ATSDR) is conducting epidemiological studies to evaluate the potential for health effects from exposures to volatile organic compounds (VOCs) in finished water supplied to family housing units at U.S. Marine Corps Base Camp Lejeune, North Carolina (USMCB...
Groundwater hydrology and estimation of horizontal groundwater flux from the Rio Grande at selected locations in Albuquerque, New Mexico, 2003-9
Dale R. Rankin, Kurt J. McCoy, Geoff J.M. More, Jeffrey A. Worthington, Kimberly M. Bandy-Baldwin
2013, Scientific Investigations Report 2012-5007
The Albuquerque, New Mexico, area has two principal sources of water: groundwater from the Santa Fe Group aquifer system and surface water from the San Juan-Chama Diversion Project. From 1960 to 2002, groundwater withdrawals from the Santa Fe Group aquifer system have caused water levels to decline more than 120...
Nutrient concentrations in surface water and groundwater, and nitrate source identification using stable isotope analysis, in the Barnegat Bay-Little Egg Harbor watershed, New Jersey, 2010–11
Christine M. Wieben, Ronald J. Baker, Robert S. Nicholson
2013, Scientific Investigations Report 2012-5287
Five streams in the Barnegat Bay-Little Egg Harbor (BB-LEH) watershed in southern New Jersey were sampled for nutrient concentrations and stable isotope composition under base-flow and stormflow conditions, and during the growing and nongrowing seasons, to help quantify and identify sources of nutrient loading. Samples were analyzed for concentrations of...
Flood-inundation maps for the Flatrock River at Columbus, Indiana, 2012
William F. Coon
2013, Scientific Investigations Map 3241
Digital flood-inundation maps for a 5-mile reach of the Flatrock River on the western side of Columbus, Indiana, from County Road 400N to the river mouth at the confluence with Driftwood River, were created by the U.S. Geological Survey (USGS) in cooperation with the Indiana Department of Transportation. The inundation...
Characterization and simulation of fate and transport of selected volatile organic compounds in the vicinities of the Hadnot Point Industrial Area and landfill
L. Elliott Jones, René J. Suárez-Soto, Barbara A. Anderson, Morris L. Maslia
2013, Report, Analyses and historical reconstruction of groundwater flow, contaminant fate and transport, and distribution of drinking water within the service areas of the Hadnot Point and Holcomb Boulevard Water Treatment Plants and vicinities, U.S. Marine Corps Base Camp Lejeune, North Carolina
This supplement of Chapter A (Supplement 6) describes the reconstruction (i.e. simulation) of historical concentrations of tetrachloroethylene (PCE), trichloroethylene (TCE), and benzene3 in production wells supplying water to the Hadnot Base (USMCB) Camp Lejeune, North Carolina (Figure S6.1). A fate and transport model (i.e., MT3DMS [Zheng and Wang 1999]) was...