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Page 2013, results 50301 - 50325

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The National Map - Hydrography
Jeffrey D. Simley, William J. Carswell Jr.
2009, Fact Sheet 2009-3054
The National Hydrography Dataset (NHD) is the surface-water component of The National Map. The NHD is a comprehensive set of digital spatial data that represents the surface water of the United States using common features such as lakes, ponds, streams, rivers, canals, streamgages, and dams. Polygons are used to represent...
Geologic Map of the Round Spring Quadrangle, Shannon County, Missouri
Randall C. Orndorff, David J. Weary
2009, Scientific Investigations Map 3073
The Round Spring 7.5-minute quadrangle is located in Shannon County, south-central Missouri on the Salem Plateau of the Ozark Plateaus physiographic province. As much as 1,350 feet (ft) of flat-lying to gently dipping Upper Cambrian and Lower Ordovician rocks, mostly dolomite, overlie Mesoproterozoic volcanic rocks. The bedrock is overlain by...
Water-Quality and Biological Assessment of the Iowa River and Tributaries Within and Contiguous to the Meskwaki Settlement of the Sac and Fox Tribe of the Mississippi in Iowa, 2006-07
Gregory R. Littin, Jason C. McVay
2009, Scientific Investigations Report 2009-5105
In cooperation with the Sac and Fox Tribe of the Mississippi in Iowa (Meskwaki Nation), the U.S. Geological Survey conducted a 2-year baseline assessment of the chemical and biological quality of streams within the Meskwaki Settlement in central Iowa. The Meskwaki Nation is a federally recognized tribe that wishes to...
Reconnaissance of Organic Wastewater Compounds at a Concentrated Swine Feeding Operation in the North Carolina Coastal Plain, 2008
Stephen L. Harden
2009, Open-File Report 2009-1128
Water-quality and hydrologic data were collected during 2008 to examine the occurrence of organic wastewater compounds at a concentrated swine feeding operation located in the North Carolina Coastal Plain. Continuous groundwater level and stream-stage data were collected at one monitoring well and one stream site, respectively, throughout 2008. One round...
The National Coal Resource Assessment Overview
Brenda S. Pierce, Kristin O. Dennen
2009, Professional Paper 1625-F
The U.S. Geological Survey (USGS) has completed the National Coal Resource Assessment (NCRA), a multiyear project by the USGS Energy Resources Program, in partnership with State geological surveys in the coal producing regions of the United States. The NCRA is the first digital national coal-resource assessment. Coal beds and zones...
Geologic Cross Section D-D' Through the Appalachian Basin from the Findlay Arch, Sandusky County, Ohio, to the Valley and Ridge Province, Hardy County, West Virginia
Robert T. Ryder, Robert D. Crangle Jr., Michael H. Trippi, Christopher S. Swezey, Erika E. Lentz, Elisabeth L. Rowan, Rebecca S. Hope
2009, Scientific Investigations Map 3067
Geologic cross section D-D' is the second in a series of cross sections constructed by the U.S. Geological Survey to document and improve understanding of the geologic framework and petroleum systems of the Appalachian basin. Cross section D-D' provides a regional view of the structural and stratigraphic framework of the...
Total selenium and selenium species in irrigation drain inflows to the Salton Sea, California, October 2008 and January 2009
Thomas W. May, Michael J. Walther, Michael K. Saiki, William G. Brumbaugh
2009, Open-File Report 2009-1123
This report presents the results for two sampling periods (October 2008 and January 2009) during a 4-year monitoring program to characterize selenium concentrations in selected irrigation drains flowing into the Salton Sea, California. Total selenium, selenium species (dissolved selenite, selenate, organoselenium), and total suspended solids were determined in water samples....
Ecology of Greater Sage-Grouse in the Bi-State Planning Area Final Report, September 2007
Michael L. Casazza, Cory T. Overton, Melissa A. Farinha, Alicia A. Torregrosa, Joseph P. Fleskes, Michael R. Miller, James S. Sedinger, Eric J. Kolada
2009, Open-File Report 2009-1113
Conservation efforts for greater sage-grouse (Centrocercus urophasianus), hereafter sage-grouse, are underway across the range of this species. Over 70 local working groups have been established and are implementing on-the-ground sage-grouse oriented conservation projects. Early on in this process, the California Department of Fish and Game (CDFG) recognized the need to...
Assessment of Lower Missouri River physical aquatic habitat and its use by adult sturgeon (Genus Scaphirhynchus), 2005-07
Joanna M. Reuter, Robert B. Jacobson, Caroline M. Elliott, Aaron J. DeLonay
2009, Scientific Investigations Report 2009-5121
This report presents an exploratory analysis of habitat availability and use by adult Scaphirhynchus sturgeon on the Lower Missouri River from Gavins Point Dam, South Dakota, to the junction with the Mississippi River. The analysis is based on two main data sources collected from 2005 to 2007: (1) a compilation...
Groundwater-Quality Assessment, Pike County, Pennsylvania, 2007
Lisa A. Senior
2009, Scientific Investigations Report 2009-5129
Pike County, a 545 square-mile area in northeastern Pennsylvania, has experienced the largest relative population growth of any county in the state from 1990 to 2000 and its population is projected to grow substantially through 2025. This growing population may result in added dependence and stresses on water resources, including...
Literature review and database of relations between salinity and aquatic biota: Applications to Bowdoin National Wildlife Refuge, Montana
Robert A. Gleason, Brian A. Tangen, Murray K. Laubhan, Raymond G. Finocchiaro, John F. Stamm
2009, Scientific Investigations Report 2009-5098
Long-term accumulation of salts in wetlands at Bowdoin National Wildlife Refuge (NWR), Mont., has raised concern among wetland managers that increasing salinity may threaten plant and invertebrate communities that provide important habitat and food resources for migratory waterfowl. Currently, the U.S. Fish and Wildlife Service (USFWS) is evaluating various water...
Identifying Hydrologic Processes in Agricultural Watersheds Using Precipitation-Runoff Models
Joshua I. Linard, David M. Wolock, Richard M. T. Webb, Michael Wieczorek
2009, Scientific Investigations Report 2009-5126
Understanding the fate and transport of agricultural chemicals applied to agricultural fields will assist in designing the most effective strategies to prevent water-quality impairments. At a watershed scale, the processes controlling the fate and transport of agricultural chemicals are generally understood only conceptually. To examine the applicability of conceptual models...
Trends in Streamflow and Nutrient and Suspended-Sediment Concentrations and Loads in the Upper Mississippi, Ohio, Red, and Great Lakes River Basins, 1975-2004
David L. Lorenz, Dale M. Robertson, David W. Hall, David A. Saad
2009, Scientific Investigations Report 2008-5213
Many actions have been taken to reduce nutrient and suspended-sediment concentrations and the amount of nutrients and sediment transported in streams as a result of the Clean Water Act and subsequent regulations. This report assesses how nutrient and suspended-sediment concentrations and loads in selected streams have changed during recent years...
Land Area Change and Overview of Major Hurricane Impacts in Coastal Louisiana, 2004-08
John A. Barras
2009, Scientific Investigations Map 3080
The U.S. Geological Survey (USGS) assessed changes in land and water coverage in coastal Louisiana within 2 months of Hurricane Gustav (September 1, 2008) and Hurricane Ike (September 13, 2008) by using Landsat Thematic Mapper (TM) satellite imagery. The purpose of this study was twofold: (1) to provide preliminary information...
Physical and Vegetative Characteristics of a Newly Constructed Wetland and Modified Stream Reach, Tredyffrin Township, Chester County, Pennsylvania, 2000-2006
Jeffrey J. Chaplin, Kirk E. White, Leif E. Olson
2009, Scientific Investigations Report 2009-5020
To compensate for authorized disturbance of naturally occurring wetlands and streams during roadway improvements to U.S. Highway 202 in Chester and Montgomery Counties, Pa., the Pennsylvania Department of Transportation (PennDOT) constructed 0.42 acre of emergent wetland and 0.94 acre of scrub-shrub/forested wetland and modified sections of a 1,600-foot reach of...
Assessment of Ground-Water Resources in the Seacoast Region of New Hampshire
Thomas J. Mack
2009, Scientific Investigations Report 2008-5222
Numerical ground-water-flow models were developed for a 160-square-mile area of coastal New Hampshire to provide insight into the recharge, discharge, and availability of ground water. Population growth and increasing water use prompted concern for the sustainability of the region's ground-water resources. Previously, the regional hydraulic characteristics of the fractured bedrock...
Carbon isotope turnover as a measure of arrival time in migratory birds
Steffen Oppel, Abby N. Powell
2009, Journal of Ornithology (151) 123-131
Arrival time on breeding or non-breeding areas is of interest in many ecological studies exploring fitness consequences of migratory schedules. However, in most field studies, it is difficult to precisely assess arrival time of individuals. Here, we use carbon isotope turnover in avian blood as a technique to estimate arrival...
Taking the Pulse of a River System: Research on the Upper Mississippi River System
Jennifer Sauer, Barry Johnson
2009, Fact Sheet 2009-3045
Mark Twain raved about the Mississippi River basin as, 'the body of the Nation'. The 'upper body', upstream of the confluence with the Ohio River, includes commercially navigable reaches and branching tributaries that are recreationally and environmentally important. Together they feed and shelter an array of fish and wildlife in...
Status Assessment of Laysan and Black-Footed Albatrosses, North Pacific Ocean, 1923-2005
Javier A. Arata, Paul R. Sievert, Maura B. Naughton
2009, Scientific Investigations Report 2009-5131
Over the past century, Laysan (Phoebastria immutabilis) and black-footed (Phoebastria nigripes) albatrosses have been subjected to high rates of mortality and disturbance at the breeding colonies and at sea. Populations were greatly reduced and many colonies were extirpated around the turn of the 20th century as a result of feather...
Prompt Assessment of Global Earthquakes for Response (PAGER): A System for Rapidly Determining the Impact of Earthquakes Worldwide
Paul S. Earle, David J. Wald, Kishor S. Jaiswal, Trevor I. Allen, Michael G. Hearne, Kristin D. Marano, Alicia J. Hotovec, Jeremy Fee
2009, Open-File Report 2009-1131
Within minutes of a significant earthquake anywhere on the globe, the U.S. Geological Survey (USGS) Prompt Assessment of Global Earthquakes for Response (PAGER) system assesses its potential societal impact. PAGER automatically estimates the number of people exposed to severe ground shaking and the shaking intensity at affected cities. Accompanying maps...
Water Quality and Hydrology of Silver Lake, Barron County, Wisconsin, With Special Emphasis on Responses of a Terminal Lake to Changes in Phosphorus Loading and Water Level
Dale M. Robertson, William J. Rose, Faith A. Fitzpatrick
2009, Scientific Investigations Report 2009-5077
Silver Lake is typically an oligotrophic-to-mesotrophic, soft-water, terminal lake in northwestern Wisconsin. A terminal lake is a closed-basin lake with surface-water inflows but no surface-water outflows to other water bodies. After several years with above-normal precipitation, very high water levels caused flooding of several buildings near the lake and erosion...
High-frequency normal mode propagation in aluminum cylinders
Myung W. Lee, William F. Waite
2009, Scientific Investigations Report 2009-5142
Acoustic measurements made using compressional-wave (P-wave) and shear-wave (S-wave) transducers in aluminum cylinders reveal waveform features with high amplitudes and with velocities that depend on the feature's dominant frequency. In a given waveform, high-frequency features generally arrive earlier than low-frequency features, typical for normal mode propagation. To analyze these waveforms,...
Chapter 7 using liquefaction‐induced and other soft‐sediment features for paleoseismic analysis
Stephen F. Obermeier
2009, International Geophysics (95) 497-564
This chapter focuses on the methodology for determining whether observed sediment deformation had a seismic shaking or a nonseismic origin. The chapter emphasizes features developed from the process of liquefaction, which is the transformation of a granular material from a solid state into a liquefied state as a consequence of increased pore-water pressure. Geophysical methods including electrical...