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Page 1696, results 42376 - 42400

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Publication Extents

Not all publications have extents, not all extents are completely accurate
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...
Limnological Conditions and Occurrence of Taste-and-Odor Compounds in Lake William C. Bowen and Municipal Reservoir #1, Spartanburg County, South Carolina, 2006-2009
Celeste A. Journey, Jane M. Arrington, Karen M. Beaulieu, Jennifer L. Graham, Paul M. Bradley
2011, Scientific Investigations Report 2011-5060
Limnological conditions and the occurrence of taste-and-odor compounds were studied in two reservoirs in Spartanburg County, South Carolina, from May 2006 to June 2009. Lake William C. Bowen and Municipal Reservoir #1 are relatively shallow, meso-eutrophic, warm monomictic, cascading impoundments on the South Pacolet River. Overall, water-quality conditions and phytoplankton...
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...
Selected Images of the Effects of the October 15, 2006, Kiholo Bay-Mahukona, Hawai'i, Earthquakes and Recovery Efforts
Taeko Jane Takahashi, Nancy A. Ikeda, Paul G. Okubo, Maurice K. Sako, David C. Dow, Anna M. Priester, Nolan A. Steiner
2011, Data Series 506
Early on the morning of October 15, 2006, two moderate earthquakes—the largest in decades—struck the Island of Hawai‘i. The first of these, which occurred at 7:07 a.m., HST (1707 UTC), was a magnitude (M) 6.7 earthquake, centered beneath Kīholo Bay on the northwestern coast of the island (19.878°N, 155.935°W), at...
The National Map
Larry J. Sugarbaker, William J. Carswell Jr.
2011, Fact Sheet 2011-3042
Inner shelf morphologic controls on the dynamics of the beach and bar system, Fire Island, New York
Cheryl J. Hapke, William C. Schwab, Paul T. Gayes, Clay McCoy, Richard Viso, Erika E. Lentz
Julie D. Rosati, Ping Wang, Tiffany M. Roberts, editor(s)
2011, Conference Paper, The proceedings of the Coastal Sediments 2011
The mechanism of sediment exchange between offshore sand ridges and the beach at Fire Island, New York is largely unknown. However, recent evidence from repeat nearshore bathymetry surveys, coupled with the complex but consistent bar morphology and patterns of shoreline change demonstrate that there is a feedback occurring between the...
Ecoregional-scale monitoring within conservation areas, in a rapidly changing climate
Erik A. Beever, Andrea Woodward
2011, Biological Conservation (144) 1255-1257
Long-term monitoring of ecological systems can prove invaluable for resource management and conservation. Such monitoring can: (1) detect instances of long-term trend (either improvement or deterioration) in monitored resources, thus providing an early-warning indication of system change to resource managers; (2) inform management decisions and help assess the effects of...
Diet of juvenile and adult American Shad in the Columbia River
Sally T. Sauter, Michael J. Parsen, J. Timothy Blubaugh
2011, Report, Impact of American shad in the Columbia River. Final Report Performance Period: May 1, 2007 – January 15, 2011.
The diet of juvenile and adult American shad Alosa sapidissima captured from various locations in the Columbia River was investigated during 2007 and 2008. Collection efforts in 2007 were restricted to fish collected from existing adult and juvenile fish collection facilities located at Bonneville Dam and to adult shad captured...
Acute toxicity of two lampricides, 3-trifluoromethyl-4-nitrophenol (TFM) and a TFM: 1% niclosamide mixture, to sea lamprey, three species of unionids, haliplid water beetles, and American eel
Michael A. Boogaard, Jane E. Rivera
2011, Technical Report 70
We conducted a series of toxicological treatments with 3-trifluoromethyl-4-nitrophenol (TFM) and a TFM:1% 2′,5-dichloro-4′-nitrosalicylanilide (niclosamide) mixture, two compounds used to control larval sea lamprey (Petromyzon marinus) in Great Lakes tributaries, to evaluate the acute toxicity of the lampricides to a number of nontarget species of concern. Treatments were conducted with...
Diet of juvenile and adult American shad in the Columbia River
Sally T. Sauter, J. Timothy Blubaugh, Michael J. Parsley
2011, Book chapter, Impact of American shad in the Columbia River
The diet of juvenile and adult American shad Alosa sapidissima captured from various locations in the Columbia River was investigated during 2007 and 2008. Collection efforts in 2007 were restricted to fish collected from existing adult and juvenile fish collection facilities located at Bonneville Dam and to adult shad captured...
A numerical model investigation of the formation and persistence of an erosion hotspot
Jeff E. Hansen, Edwin Elias, Jeffrey H. List, Patrick L. Barnard
2011, Conference Paper, The proceedings of the Coastal Sediments 2011
A Delft3D-SWAN coupled flow and wave model was constructed for the San Francisco Bight with high-resolution at 7 km-long Ocean Beach, a high-energy beach located immediately south of the Golden Gate, the sole entrance to San Francisco Bay. The model was used to investigate tidal and wave-induced flows, basic forcing...
Climate change links fate of glaciers and an endemic alpine invertebrate
Clint C. Muhlfeld, J. Joseph Giersch, F. Richard Hauer, Gregory T. Pederson, Gordon Luikart, Douglas P. Peterson, Christopher C. Downs, Daniel B. Fagre
2011, Climatic Change (106) 337-345
Climate warming in the mid- to high-latitudes and high-elevation mountainous regions is occurring more rapidly than anywhere else on Earth, causing extensive loss of glaciers and snowpack. However, little is known about the effects of climate change on alpine stream biota, especially invertebrates. Here, we show a strong linkage between...
Development of a bioenergetics model for age-0 American shad
Sally T. Sauter
2011, Book chapter, Impact of American shad in the Columbia River
Bioenergetics modeling can be used as a tool to investigate the impact of non-native age-0 American shad (Alosa sapidissima) on reservoir and estuary food webs. The model can increase our understanding of how these fish influence lower trophic levels as well as predatory fish populations that feed on juvenile salmonids....