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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 82,000 reports authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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To burn or not to burn Oriental bittersweet: A fire manager's conundrum To burn or not to burn Oriental bittersweet: A fire manager's conundrum
Oriental bittersweet (Celastrus orbiculatus) is an introduced liana (woody vine) that has invaded much of the Eastern United States and is expanding west into the Great Plains. In forests, it can girdle and damage canopy trees. At Indiana Dunes, we have discovered that it is invading non-forested dune habitats as well. Anecdotal evidence suggests that fire might facilitate its spread...
Authors
Stacey A. Leicht-Young, Noel B. Pavlovic, Ralph Grundel, Scott A. Weyenberg, Neal Mulconrey
Description of 2005-10 domestic water use for selected U.S. cities and guidance for estimating domestic water use Description of 2005-10 domestic water use for selected U.S. cities and guidance for estimating domestic water use
Domestic water-use and related socioeconomic and climatic data for 2005-10 were used in an analysis of 21 selected U.S. cities to describe recent domestic per capita water use, investigate variables that potentially affect domestic water use, and provide guidance for estimating domestic water use. Domestic water use may be affected by a combination of several factors. Domestic per capita...
Authors
Joan F. Kenny, Kyle E. Juracek
Estimation of evaporation from open water - A review of selected studies, summary of U.S. Army Corps of Engineers data collection and methods, and evaluation of two methods for estimation of evaporation from five reservoirs in Texas Estimation of evaporation from open water - A review of selected studies, summary of U.S. Army Corps of Engineers data collection and methods, and evaluation of two methods for estimation of evaporation from five reservoirs in Texas
Organizations responsible for the management of water resources, such as the U.S. Army Corps of Engineers (USACE), are tasked with estimation of evaporation for water-budgeting and planning purposes. The USACE has historically used Class A pan evaporation data (pan data) to estimate evaporation from reservoirs but many USACE Districts have been experimenting with other techniques for an
Authors
Glenn R. Harwell
Toxicity, sublethal effects, and potential modes of action of select fungicides on freshwater fish and invertebrates Toxicity, sublethal effects, and potential modes of action of select fungicides on freshwater fish and invertebrates
Despite decades of agricultural and urban use of fungicides and widespread detection of these pesticides in surface waters, relatively few data are available on the effects of fungicides on fish and invertebrates in the aquatic environment. Nine fungicides are reviewed in this report: azoxystrobin, boscalid, chlorothalonil, fludioxonil, myclobutanil, fenarimol, pyraclostrobin...
Authors
Adria A. Elskus
Survey of roadside alien plants in Hawai`i Volcanoes National Park and adjacent residential areas 2001-2005 Survey of roadside alien plants in Hawai`i Volcanoes National Park and adjacent residential areas 2001-2005
The sides of all paved roads of Hawai`i Volcanoes National Park (HAVO) were surveyed on foot in 2001 to 2005, and the roadside presence of 240 target invasive and potentially invasive alien plant species was recorded in mile-long increments. Buffer zones 5–10 miles (8–16 km) long along Highway 11 on either side of the Kīlauea and Kahuku Units of the park, as well as Wright Road that...
Authors
Keali’i F. Bio, Linda W. Pratt, James D. Jacobi
Assessment of undiscovered oil and gas resources of the Ordovician Utica Shale of the Appalachian Basin Province, 2012 Assessment of undiscovered oil and gas resources of the Ordovician Utica Shale of the Appalachian Basin Province, 2012
The U.S. Geological Survey assessed unconventional oil and gas resources of the Upper Ordovician Utica Shale and adjacent units in the Appalachian Basin Province. The assessment covers parts of Maryland, New York, Ohio, Pennsylvania, Virginia, and West Virginia. The geologic concept is that black shale of the Utica Shale and adjacent units generated hydrocarbons from Type II organic...
Authors
Mark A. Kirschbaum, Christopher J. Schenk, Troy A. Cook, Robert T. Ryder, Ronald R. Charpentier, Timothy R. Klett, Stephanie B. Gaswirth, Marilyn E. Tennyson, Katherine J. Whidden
Bathymetric and velocimetric surveys at highway bridges crossing the Missouri River in and into Missouri during summer flooding, July-August 2011 Bathymetric and velocimetric surveys at highway bridges crossing the Missouri River in and into Missouri during summer flooding, July-August 2011
Bathymetric and velocimetric surveys were conducted by the U.S. Geological Survey, in cooperation with the Kansas and Missouri Departments of Transportation, in the vicinity of 36 bridges at 27 highway crossings of the Missouri River between Brownville, Nebraska and St. Louis, Missouri, from July 13 through August 3, 2011, during a summer flood. A multibeam echo sounder mapping system...
Authors
Richard J. Huizinga
Database of the United States Coal Pellet Collection of the U.S. Geological Survey Organic Petrology Laboratory Database of the United States Coal Pellet Collection of the U.S. Geological Survey Organic Petrology Laboratory
The Organic Petrology Laboratory (OPL) of the U.S. Geological Survey (USGS) Eastern Energy Resources Science Center in Reston, Virginia, contains several thousand processed coal sample materials that were loosely organized in laboratory drawers for the past several decades. The majority of these were prepared as 1-inch-diameter particulate coal pellets (more than 6,000 pellets; one...
Authors
Nikolaus J. Deems, Paul C. Hackley
Geophysical investigation of sentinel lakes in Lake, Seminole, Orange, and Volusia Counties, Florida Geophysical investigation of sentinel lakes in Lake, Seminole, Orange, and Volusia Counties, Florida
This study was initiated in cooperation with the St. Johns River Water Management District (SJRWMD) to investigate groundwater and surface-water interaction in designated sentinel lakes in central Florida. Sentinel lakes are a SJRWMD established set of priority water bodies (lakes) for which minimum flows and levels (MFLs) are determined. Understanding both the structure and lithology...
Authors
Christopher Reich, James Flocks, Jeffrey Davis
Method for estimating potential wetland extent by utilizing streamflow statistics and flood-inundation mapping techniques: Pilot study for land along the Wabash River near Terre Haute, Indiana Method for estimating potential wetland extent by utilizing streamflow statistics and flood-inundation mapping techniques: Pilot study for land along the Wabash River near Terre Haute, Indiana
Potential wetland extents were estimated for a 14-mile reach of the Wabash River near Terre Haute, Indiana. This pilot study was completed by the U.S. Geological Survey in cooperation with the U.S. Department of Agriculture, Natural Resources Conservation Service (NRCS). The study showed that potential wetland extents can be estimated by analyzing streamflow statistics with the available
Authors
Moon H. Kim, Christian T. Ritz, Donald V. Arvin
Summary of oceanographic and water-quality measurements near the Blackwater National Wildlife Refuge, Maryland, 2011 Summary of oceanographic and water-quality measurements near the Blackwater National Wildlife Refuge, Maryland, 2011
Suspended-sediment transport is a critical element governing the geomorphology of tidal marshes. Marshes rely on both organic material and inorganic sediment deposition to maintain their elevation relative to sea level. In wetlands near the Blackwater National Wildlife Refuge, Maryland, portions of the salt marsh have been subsiding relative to sea level since the early 20th century...
Authors
Neil K. Ganju, Patrick J. Dickhudt, Ellyn T. Montgomery, Patrick Brennand, R. Kyle Derby, Thomas W. Brooks, Glenn R. Guntenspergen, Marinna A. Martini, Jonathan Borden, Sandra M. Baldwin
Test drilling and data collection in the Calaveras County portion of the Eastern San Joaquin Groundwater Subbasin, California, December 2009-June 2011 Test drilling and data collection in the Calaveras County portion of the Eastern San Joaquin Groundwater Subbasin, California, December 2009-June 2011
Two multiple-well monitoring sites were drilled in the Calaveras County portion of the Eastern San Joaquin Groundwater Subbasin, about 100 miles east of San Francisco, California, during December 2009 and January 2010. Site 3N/9E-12G1-4 was drilled to a depth of 503 feet below land surface (bls), and four wells were installed. Site 4N/9E-36A1-3 was drilled to a depth of 400 feet bls, and...
Authors
Loren F. Metzger, John A. Izbicki, Joseph M. Nawikas