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Page 505, results 12601 - 12625

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California State Waters Map Series — Offshore of Tomales Point, California
Samuel Y. Johnson, Peter Dartnell, Nadine E. Golden, Stephen R. Hartwell, H. Gary Greene, Mercedes D. Erdey, Guy R. Cochrane, Janet Tilden Watt, Rikk G. Kvitek, Michael W. Manson, Charles A. Endris, Bryan E. Dieter, Lisa M. Krigsman, Ray W. Sliter, Erik N. Lowe, John L. Chinn
Samuel Y. Johnson, Susan A. Cochran, editor(s)
2015, Open-File Report 2015-1088
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration,...
Status and threats analysis for the Florida manatee (Trichechus manatus latirostris), 2012
Michael C. Runge, Catherine A. Langtimm, Julien Martin, Christopher J. Fonnesbeck
2015, Open-File Report 2015-1083
The endangered West Indian manatee (Trichechus manatus), especially the Florida subspecies (T. m. latirostris), has been the focus of conservation efforts and extensive research since its listing under the Endangered Species Act. On the basis of the best information available as of December 2012, the threats facing the Florida manatee...
2013 Survey of Iowa groundwater and evaluation of public well vulnerability classifications for contaminants of emerging concern
Claire E. Hruby, Robert D. Libra, Chad L. Fields, Dana W. Kolpin, Laura E. Hubbard, Mark R. Borchardt, Susan K. Spencer, Michael D. Wichman, Nancy Hall, Michael D. Schueller, Edward T. Furlong, Peter J. Weyer
2015, Iowa Geological and Water Survey Technical Information Series 57
Studies in Iowa have long documented the vulnerability of wells with less than 50 feet (15 meters) of confining materials above the source aquifer to contamination from nitrate and various pesticides. Recent studies in Wisconsin have documented the occurrence of viruses in untreated groundwater, even in wells considered to have...
Offshore geology and geomorphology from Point Piedras Blancas to Pismo Beach, San Luis Obispo County, California
Janet Watt, Samuel Y. Johnson, Stephen R. Hartwell, Michelle Roberts
2015, Scientific Investigations Map 3327
Marine geology and geomorphology were mapped along the continental shelf and upper slope between Point Piedras Blancas and Pismo Beach, California. The map area is divided into the following three (smaller) map areas, listed from north to south: San Simeon, Morro Bay, and Point San Luis. Each smaller map area...
California State Waters Map Series — Drakes Bay and vicinity, California
Janet Watt, Peter Dartnell, Nadine E. Golden, H. Gary Greene, Mercedes D. Erdey, Guy R. Cochrane, Samuel Y. Johnson, Stephen R. Hartwell, Rikk G. Kvitek, Michael W. Manson, Charles A. Endris, Bryan E. Dieter, Ray W. Sliter, Lisa M. Krigsman, Erik N. Lowe, John L. Chinn
Janet Watt, Susan A. Cochran, editor(s)
2015, Open-File Report 2015-1041
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration,...
Use of 2H and 18O stable isotopes to investigate water sources for different ages of Populus euphratica along the lower Heihe River
Shubao Liu, Yaning Chen, Yapeng Chen, Jonathan M. Friedman, Gonghuan Fan, Jarre Heng A. Hati
2015, Ecological Research (30) 581-587
Investigation of the water sources used by trees of different ages is essential to formulate a conservation strategy for the riparian tree, P. euphratica. This study addressed the contributions of different potential water sources to P. euphratica based on levels of stable oxygen and hydrogen isotopes (δ18<span...
Water-table and potentiometric-surface altitudes in the Upper Glacial, Magothy, and Lloyd aquifers of Long Island, New York, April-May 2013
Michael D. Como, Michael L. Noll, Jason S. Finkelstein, Jack Monti Jr., Ronald Busciolano
2015, Scientific Investigations Map 3326
The U.S. Geological Survey (USGS), in cooperation with State and local agencies, systematically collects groundwater data at varying measurement frequencies to monitor the hydrologic conditions on Long Island, New York. Each year during April and May, the USGS conducts a synoptic survey of water levels to define the spatial distribution...
In-reservoir behavior, dam passage, and downstream migration of juvenile Chinook salmon and juvenile steelhead from Detroit Reservoir and Dam to Portland, Oregon, February 2013-February 2014
John W. Beeman, Noah S. Adams
2015, Open-File Report 2015-1090
In the second year of 2 years of study, the movements of juvenile spring Chinook salmon (Oncorhynchus tshawytscha) and juvenile summer steelhead (Oncorhynchus mykiss) through Detroit Reservoir, passing Detroit Dam, and migrating downstream to Portland, Oregon, were studied during a 1-year-long period beginning in February 2013. The primary purpose of...
California State Waters Map Series — Offshore of San Francisco, California
Guy R. Cochrane, Samuel Y. Johnson, Peter Dartnell, H. Gary Greene, Mercedes D. Erdey, Nadine E. Golden, Stephen R. Hartwell, Charles A. Endris, Michael W. Manson, Ray W. Sliter, Rikk G. Kvitek, Janet Tilden Watt, Stephanie L. Ross, Terry R. Bruns
Guy R. Cochrane, Susan A. Cochran, editor(s)
2015, Open-File Report 2015-1068
In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within California’s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and visualization of...
Effects of lake surface elevation on shoreline-spawning Lost River Suckers
Summer M. Burdick, David A. Hewitt, J.E. Rasmussen, Brian Hayes, Eric Janney, Alta C. Harris
2015, North American Journal of Fisheries Management (35) 478-490
We analyzed remote detection data from PIT-tagged Lost River Suckers Deltistes luxatus at four shoreline spawning areas in Upper Klamath Lake, Oregon, to determine whether spawning of this endangered species was affected by low water levels. Our investigation was motivated by the observation that the surface elevation of the lake...
Laboratory evaluation of the pressure water level data logger manufactured by Infinities USA, Inc.: results of pressure and temperature tests
Mark V. Carnley
2015, Open-File Report 2015-1049
The Pressure Water Level Data Logger manufactured by Infinities USA, Inc., was evaluated by the U.S. Geological Survey (USGS) Hydrologic Instrumentation Facility for conformance with the manufacturer’s stated accuracy specifications for measuring pressure throughout the device’s operating temperature range and with the USGS accuracy requirements for water-level measurements. The Pressure...
Groundwater quality in the Cascade Range and Modoc Plateau, California
Miranda S. Fram, Jennifer L. Shelton
2015, Fact Sheet 2014-3123
Groundwater provides more than 40 percent of California’s drinking water. To protect this vital resource, the State of California created the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The Priority Basin Project of the GAMA Program provides a comprehensive assessment of the State’s groundwater quality and increases public access to...
Diel cycling of trace elements in streams draining mineralized areas: a review
Chris Gammons, David A. Nimick, Stephen R. Parker
2015, Applied Geochemistry (57) 35-44
Many trace elements exhibit persistent diel, or 24-h, concentration cycles in streams draining mineralized areas. These cycles can be caused by various physical and biogeochemical mechanisms including streamflow variation, photosynthesis and respiration, as well as reactions involving photochemistry, adsorption and desorption, mineral precipitation and dissolution, and plant assimilation. Iron is...
Status and understanding of groundwater quality in the Cascade Range and Modoc Plateau study unit, 2010: California GAMA Priority Basin Project
Miranda S. Fram, Jennifer L. Shelton
2015, Scientific Investigations Report 2014-5238
Groundwater quality in the Cascade Range and Modoc Plateau study unit was investigated as part of the California State Water Resources Control Board’s Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project. The study was designed to provide a statistically unbiased assessment of untreated groundwater quality in the primary...
Hydrogeologic framework, groundwater movement, and water budget in the Puyallup River Watershed and vicinity, Pierce and King Counties, Washington
Wendy B. Welch, Kenneth H. Johnson, Mark E. Savoca, Ron C. Lane, Elisabeth T. Fasser, Andrew S. Gendaszek, Cameron Marshall, Burt G. Clothier, Eric N. Knoedler
2015, Scientific Investigations Report 2015-5068
This report presents information used to characterize the groundwater-flow system in the Puyallup River Watershed and vicinity, and includes descriptions of the geology and hydrogeologic framework; groundwater recharge and discharge; groundwater levels and flow directions; seasonal groundwater level fluctuations; interactions between aquifers and the surface-water system; and a water budget....
Response of Bighead Carp and Silver Carp to repeated water gun operation in an enclosed shallow pond
Jason G. Romine, Nathan Jensen, Michael J. Parsley, Robert F. Gaugush, Todd J. Severson, Tyson W. Hatton, Ryan F. Adams, Mark P. Gaikowski
2015, North American Journal of Fisheries Management (35) 440-453
The Bighead Carp Hypophthalmichthys nobilis and Silver Carp H. molitrix are nonnative species that pose a threat to Great Lakes ecosystems should they advance into those areas. Thus, technologies to impede Asian carp movement into the Great Lakes are needed; one potential technology is the seismic water gun. We evaluated the efficacy of a...
Potentiometric surface, 2012, and water-level differences, 2005-12, of the Sparta Aquifer in north-central Louisiana
Benton D. McGee, Jeffrey A. Brantly
2015, Scientific Investigations Map 3313
The Sparta aquifer is used in 15 parishes in north-central Louisiana, primarily for public supply and industrial purposes. Of those parishes, eight (Bienville, Claiborne, Jackson, Lincoln, Ouachita, Union, Webster, and Winn) rely on the Sparta aquifer as their principal source of groundwater. In 2010, withdrawals from the Sparta aquifer in...
Composition, shell strength, and metabolizable energy of Mulinia lateralis and Ischadium recurvum as food for wintering surf scoters (Melanitta perspicillata)
Alicia Berlin, Matthew C. Perry, R.A. Kohn, K.T. Paynter Jr., Mary Ann Ottinger
2015, PLoS ONE (10) 1-17
Decline in surf scoter (Melanitta perspicillata) waterfowl populations wintering in the Chesapeake Bay has been associated with changes in the availability of benthic bivalves. The Bay has become more eutrophic, causing changes in the benthos available to surf scoters. The subsequent decline in oyster beds (Crassostrea virginica) has reduced the...
Water-quality characteristics of stormwater runoff in Rapid City, South Dakota, 2008-14
Galen K. Hoogestraat
2015, Scientific Investigations Report 2015-5069
The water quality of Rapid Creek is important because the reach that flows through Rapid City, South Dakota, is a valuable spawning area for a self-sustaining trout fishery, actively used for recreation, and a seasonal municipal water supply for the City of Rapid City. This report presents the current (2008–14)...
The effects of geomorphic changes during Hurricane Sandy on water levels in Great South Bay
Maarten van Ormondt, Cheryl Hapke, Dano Roelvink, Timothy R. Nelson
2015, Conference Paper, The proceedings of the coastal sediments 2015
Hurricane Sandy caused record coastal flooding along the south shore of Long Island, NY, and led to significant geomorphic changes. These included severe dune erosion along the length of Fire Island and the formation of the Wilderness Breach. This study attempts to use numerical models to quantify how these changes...
Effects of proposed sediment borrow pits on nearshore wave climate and longshore sediment transport rate along Breton Island, Louisiana
Patricia (Soupy) Dalyander, Rangley C. Mickey, Joseph W. Long, James G. Flocks
2015, Open-File Report 2015-1055
As part of a plan to preserve bird habitat on Breton Island, the southernmost extent of the Chandeleur Islands and part of the Breton National Wildlife Refuge in Louisiana, the U.S. Fish and Wildlife Service plans to increase island elevation with sand supplied from offshore resources. Proposed sand extraction sites include...
Reducing cross-sectional data using a genetic algorithm method and effects on cross-section geometry and steady-flow profiles
Charles E. Berenbrock
2015, Scientific Investigations Report 2015-5034
Reduction of cross-sectional data using a genetic algorithm method, and the effects of data reduction on channel geometry and steady-flow profiles, were analyzed. Two reduction methods─standard and genetic algorithms─were used to reduce cross-sectional data from the Kootenai River in northern Idaho. Cross sections that are representative of meander, straight, braided,...
Evapotranspiration trends over the eastern United States during the 20th century
Ryan J. Kramer, Lahouari Bounoua, Ping Zhang, Robert E. Wolfe, Thomas G. Huntington, Marc L. Imhoff, Kurt Thome, Genevieve L. Noyce
2015, Hydrology and Earth System Sciences (2) 93-111
Most models evaluated by the Intergovernmental Panel for Climate change estimate projected increases in temperature and precipitation with rising atmospheric CO2 levels. Researchers have suggested that increases in CO2 and associated increases in temperature and precipitation may stimulate vegetation growth and increase evapotranspiration (ET), which acts as a cooling mechanism, and on...
Assessing geomorphic change along the Trinity River downstream from Lewiston Dam, California, 1980-2011
Jennifer A. Curtis, Scott Wright, Justin Toby Minear, Lorraine E. Flint
2015, Scientific Investigations Report 2015-5046
The Trinity River Restoration Program, one of the nation’s largest adaptively managed river restoration programs, requires periodic assessment to determine the effectiveness of management actions in restoring channel dynamics and habitat features. This study documents riparian and channel changes along an intensively managed 65-kilometer reach of the Trinity River in...
High-resolution digital elevation model of lower Cowlitz and Toutle Rivers, adjacent to Mount St. Helens, Washington, based on an airborne lidar survey of October 2007
Adam R. Mosbrucker
2015, Data Series 936
The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. Lava domes were extruded during the subsequent eruptive periods of 1980–1986 and 2004–2008. More than three decades after the emplacement of the 1980 debris avalanche, high sediment...