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Page 1815, results 45351 - 45375

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Numerical simulation of the groundwater-flow system in tributary subbasins and vicinity, lower Skagit River basin, Skagit and Snohomish Counties, Washington
Kenneth H. Johnson, Mark E. Savoca
2010, Scientific Investigations Report 2010-5184
A groundwater-flow model was developed to evaluate the effects of potential groundwater withdrawals and consumptive use on streamflows in tributary subbasins of the lower portion of the Skagit River basin. The study area covers about 155 square miles along the Skagit River and its tributary subbasins (East Fork Nookachamps Creek,...
Approach, passage, and survival of juvenile salmonids at Little Goose Dam, Washington: Post-construction evaluation of a temporary spillway weir, 2009
John W. Beeman, Amy C. Braatz, Hal C. Hansel, Scott D. Fielding, Philip V. Haner, Gabriel S. Hansen, Dana J. Shurtleff, Jamie M. Sprando, Dennis W. Rondorf
2010, Scientific Investigations Report 2010-1224
This report describes a study of dam passage and survival of radio-tagged juvenile salmonids after installation of a temporary spillway weir (TSW) at Little Goose Dam, Washington, in 2009. The purpose of the study was to document fish passage and survival when the dam was operated with the TSW in...
Magmatic sulfide-rich nickel-copper deposits related to picrite and (or) tholeiitic basalt dike-sill complexes: A preliminary deposit model
Klaus J. Schulz, Val W. Chandler, Suzanne W. Nicholson, Nadine M. Piatak, Robert R. Seal II, Laurel G. Woodruff, Michael L. Zientek
2010, Open-File Report 2010-1179
Magmatic sulfide deposits containing nickel (Ni) and copper (Cu), with or without (±) platinum-group elements (PGEs), account for approximately 60 percent of the world’s Ni production and are active exploration targets in the United States and elsewhere. On the basis of their principal metal production, magmatic sulfide deposits in mafic...
User's guide for MAGIC-Meteorologic and hydrologic genscn (generate scenarios) input converter
Terry W. Ortel, Angel Martin Jr.
2010, Open-File Report 2010-1221
Meteorologic and hydrologic data used in watershed modeling studies are collected by various agencies and organizations, and stored in various formats. Data may be in a raw, un-processed format with little or no quality control, or may be checked for validity before being made available. Flood-simulation systems require data in...
Water volume and sediment accumulation in Lake Linganore, Frederick County, Maryland, 2009
Andrew J. Sekellick, S.L. Banks
2010, Scientific Investigations Report 2010-5174
To assist in understanding sediment and phosphorus loadings and the management of water resources, a bathymetric survey was conducted at Lake Linganore in Frederick County, Maryland in June 2009 by the U.S. Geological Survey, in cooperation with the City of Frederick and Frederick County, Maryland. Position data and water-depth data...
Expanded USGS science in the Chesapeake Bay restoration
Scott Phillips
2010, Fact Sheet 2010-3081
In May 2009, the President issued Executive Order (EO) 13508 for Chesapeake Bay Protection and Restoration. For the first time since the creation of the Chesapeake Bay Program (CBP) in 1983, the full weight of the Federal Government will be used to address the challenges facing the Chesapeake Bay. The...
Conifer health classification for Colorado, 2008
Christopher J. Cole, Suzanne M. Noble, Steven L. Blauer, Beverly A. Friesen, Stacy E. Curry, Mark A. Bauer
2010, Scientific Investigations Map 3103
Colorado has undergone substantial changes in forests due to urbanization, wildfires, insect-caused tree mortality, and other human and environmental factors. The U.S. Geological Survey Rocky Mountain Geographic Science Center evaluated and developed a methodology for applying remotely-sensed imagery for assessing conifer health in Colorado. Two classes were identified for the...
Macroinvertebrate and algal community sample collection methods and data collected at selected sites in the Eagle River watershed, Colorado, 2000-07
Robert E. Zuellig, James F. Bruce
2010, Data Series 502
State and local agencies are concerned about the effects of increasing urban development and human population growth on water quality and the biological condition of regional streams in the Eagle River watershed. In response to these needs, the U.S. Geological Survey initiated a study in cooperation with the Colorado River...
Characterization of Fish Creek, Teton County, Wyoming, 2004-08
Cheryl A. Eddy-Miller, David A. Peterson, Jerrod D. Wheeler, Daniel J. Leemon
2010, Fact Sheet 2010-3075
Fish Creek, a tributary to the Snake River, is about 15 river miles long and is located in Teton County in western Wyoming near the town of Wilson (fig. 1). Public concern about nuisance growths of aquatic plants in Fish Creek has been increasing since the early 2000s. To address...
2009 weather and aeolian sand-transport data from the Colorado River corridor, Grand Canyon, Arizona
Amy E. Draut, Hoda A. Sondossi, Timothy P. Dealy, Joseph E. Hazel Jr., Helen C. Fairley, Christopher R. Brown
2010, Open-File Report 2010-1166
This report presents measurements of weather parameters and aeolian sand transport made in 2009 near selected archeological sites in the Colorado River corridor through Grand Canyon, Ariz. The quantitative methods and data discussed here form a basis for monitoring ecosystem processes that affect archeological-site stability. Combined with forthcoming work to...
Hydrogeologic and geospatial data for the assessment of focused recharge to the carbonate-rock Aquifer in Genesee County, New York
James E. Reddy, William M. Kappel
2010, Scientific Investigations Map 3132
Existing hydrogeologic and geospatial data useful for the assessment of focused recharge to the carbonate-rock aquifer in the central part of Genesee County, NY, were compiled from numerous local, State, and Federal agency sources. Data sources utilized in this pilot study include available geospatial datasets from Federal and State agencies,...
Social values for ecosystem services (SolVES): A GIS application for assessing, mapping, and quantifying the social values of ecosystem services-Documentation and user manual, version 1.0
Benson C. Sherrouse, Jodi L. Riegle, Darius J. Semmens
2010, Open-File Report 2010-1219
In response to the need for incorporating quantified and spatially explicit measures of social values into ecosystem services assessments, the Rocky Mountain Geographic Science Center, in collaboration with Colorado State University, has developed a geographic information system application, Social Values for Ecosystem Services (SolVES). SolVES can be used to assess,...
Relation of urbanization to stream habitat and geomorphic characteristics in nine metropolitan areas of the United States
Faith A. Fitzpatrick, Marie C. Peppler
2010, Scientific Investigations Report 2010-5056
The relation of urbanization to stream habitat and geomorphic characteristics was examined collectively and individually for nine metropolitan areas of the United States?Portland, Oregon; Salt Lake City, Utah; Denver, Colorado; Dallas?Forth Worth, Texas; Milwaukee?Green Bay, Wisconsin; Birmingham, Alabama; Atlanta, Georgia; Raleigh, North Carolina; and Boston, Massachusetts. The study was part...
Pesticides in groundwater in the Anacostia River and Rock Creek watersheds in Washington, D.C., 2005 and 2008
Michael T. Koterba, Cheryl A. Dieter, Cherie V. Miller
2010, Scientific Investigations Report 2010-5130
The U.S. Geological Survey (USGS), in cooperation with the District Department of the Environment, conducted a groundwater-quality investigation to (a) determine the presence, concentrations, and distribution of selected pesticides in groundwater, and (b) assess the presence of pesticides in groundwater in relation to selected landscape, hydrogeologic, and groundwater-quality characteristics in...
Noninvasive methods for monitoring bear population trends
Katherine Kendall
2010, Fact Sheet 2010-3054
The U.S. Geological Survey began a grizzly bear research project in 2009 in the Northern Continental Divide Ecosystem (NCDE) of northwestern Montana. This work uses hair collection and DNA analysis methods similar to those used in the 2004 Northern Divide Grizzly Bear Project. However, instead of producing a snapshot of...
Decadal-scale changes in dissolved-solids concentrations in groundwater used for public supply, Salt Lake Valley, Utah
Susan A. Thiros, Larry Spangler
2010, Fact Sheet 2010-3073
Basin-fill aquifers are a major source of good-quality water for public supply in many areas of the southwestern United States and have undergone increasing development as populations have grown over time. During 2005, the basin-fill aquifer in Salt Lake Valley, Utah, provided approximately 75,000 acre-feet, or about 29 percent of...
Estimated water withdrawals and return flows in Vermont in 2005 and 2020
Laura Medalie, Marilee A. Horn
2010, Scientific Investigations Report 2010-5053
In 2005, about 12 percent of total water withdrawals (440 million gallons per day (Mgal/d)) in Vermont were from groundwater sources (51 Mgal/d), and about 88 percent were from surface-water sources (389 Mgal/d). Of total water withdrawals, about 78 percent were used for cooling at a power plant, 9 percent...
An occurrence model for the national assessment of volcanogenic beryllium deposits
Nora K. Foley, Robert R. Seal II, Nadine M. Piatak, Brianna Hetland
2010, Open-File Report 2010-1195
The general occurrence model summarized here is intended to provide a descriptive basis for the identification and assessment of undiscovered beryllium deposits of a type and style similar to those found at Spor Mountain, Juab County, Utah. The assessment model is restricted in its application in order to provide a...
Use of portable antennas to estimate abundance of PIT-tagged fish in small streams: Factors affecting detection probability
Matthew J. O’Donnell, Gregg E. Horton, Benjamin H. Letcher
2010, North American Journal of Fisheries Management (30) 323-336
Portable passive integrated transponder (PIT) tag antenna systems can be valuable in providing reliable estimates of the abundance of tagged Atlantic salmon Salmo salar in small streams under a wide range of conditions. We developed and employed PIT tag antenna wand techniques in two controlled experiments and an additional case study to...
Analytical results for municipal biosolids samples from a monitoring program near Deer Trail, Colorado (U.S.A.), 2009
J.G. Crock, D. B. Smith, T. J. B. Yager, C. J. Berry, M. G. Adams
2010, Open-File Report 2010-1162
Since late 1993, Metro Wastewater Reclamation District of Denver, a large wastewater treatment plant in Denver, Colo., has applied Grade I, Class B biosolids to about 52,000 acres of nonirrigated farmland and rangeland near Deer Trail, Colo., U.S.A. In cooperation with the Metro District in 1993, the U.S. Geological Survey...
Streamflow characteristics at streamgages in northern Afghanistan and selected locations
Scott A. Olson, Tara Williams-Sether
2010, Data Series 529
Statistical summaries of streamflow data for 79 historical streamgages in Northern Afghanistan and other selected historical streamgages are presented in this report. The summaries for each streamgage include (1) station description, (2) graph of the annual mean discharge for the period of record, (3) statistics of monthly and annual mean...
Streamflow and water-quality properties in the West Fork San Jacinto River Basin and regression models to estimate real-time suspended-sediment and total suspended-solids concentrations and loads in the West Fork San Jacinto River in the vicinity of Conroe, Texas, July 2008-August 2009
Lee J. Bodkin, Jeannette H. Oden
2010, Scientific Investigations Report 2010-5171
To better understand the hydrology (streamflow and water quality) of the West Fork San Jacinto River Basin downstream from Lake Conroe near Conroe, Texas, including spatial and temporal variation in suspended-sediment (SS) and total suspended-solids (TSS) concentrations and loads, the U.S. Geological Survey, in cooperation with the Houston-Galveston Area Council...
Continuous resistivity profiling and seismic-reflection data collected in 2006 from the Potomac River Estuary, Virginia and Maryland
V.A. Cross, D.S. Foster, J.F. Bratton
2010, Open-File Report 2009-1151
In 2006 the U.S. Geological Survey conducted a geophysical survey on the Chesapeake Bay and the Potomac River Estuary in order to test hypotheses about groundwater flow under and into Chesapeake Bay. Resource managers are concerned about nutrients that are entering the estuary via submarine groundwater discharge and are contributing...