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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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Strategic conservation planning for the Eastern North Carolina/Southeastern Virginia Strategic Habitat Conservation Team Strategic conservation planning for the Eastern North Carolina/Southeastern Virginia Strategic Habitat Conservation Team
The Eastern North Carolina/Southeastern Virginia Strategic Habitat Conservation Team (ENCSEVA) is a partnership among local federal agencies and programs with a mission to apply Strategic Habitat Conservation to accomplish priority landscape-level conservation within its geographic region. ENCSEVA seeks to further landscape-scale conservation through collaboration with local partners. To
Authors
Louise B. Alexander-Vaughn, Jaime A. Collazo, C. Ashton Drew
Strategic needs of water on the Yukon: An interdisciplinary approach to studying hydrology and climate change in the Lower Yukon River Basin Strategic needs of water on the Yukon: An interdisciplinary approach to studying hydrology and climate change in the Lower Yukon River Basin
Strategic Needs of Water on the Yukon (SNOWY) is an interdisciplinary research project funded by the National Science Foundation (NSF; http://www.nsf.gov/). The SNOWY team is made up of a diverse group of researchers from different backgrounds and organizations. This partnership between scientists from different disciplines (hydrology, geography, and social science), government agencies...
Authors
Nicole M. Herman-Mercer, Paul F. Schuster
Stratigraphic framework and depositional sequences in the Lower Silurian regional oil and gas accumulation, Appalachian basin from Jackson County, Ohio, through northwestern Pennsylvania, to Orleans County, New York Stratigraphic framework and depositional sequences in the Lower Silurian regional oil and gas accumulation, Appalachian basin from Jackson County, Ohio, through northwestern Pennsylvania, to Orleans County, New York
This chapter is a re-release of U.S. Geological Survey Scientific Investigations Map 2916, of the same title, by Ryder (2006).
Authors
Robert T. Ryder
Stratigraphic framework and depositional sequences in the Lower Silurian regional oil and gas accumulation, Appalachian basin: from Ashland County, Ohio, through southwestern Pennsylvania, to Preston County, West Virginia Stratigraphic framework and depositional sequences in the Lower Silurian regional oil and gas accumulation, Appalachian basin: from Ashland County, Ohio, through southwestern Pennsylvania, to Preston County, West Virginia
This chapter is a re-release of U.S. Geological Survey Geologic Investigations Series Map I–2810, of the same title, by Ryder (2004).
Authors
Robert T. Ryder
Stratigraphic framework and depositional sequences in the Lower Silurian regional oil and gas accumulation, Appalachian basin: from Licking County, Ohio, to Fayette County, West Virginia Stratigraphic framework and depositional sequences in the Lower Silurian regional oil and gas accumulation, Appalachian basin: from Licking County, Ohio, to Fayette County, West Virginia
This chapter is a re-release of U.S. Geological Survey Scientific Investigations Map 2916, of the same title, by Ryder (2006).
Authors
Robert T. Ryder
Stratigraphic framework of Cambrian and Ordovician rocks in the Appalachian basin from Sequatchie County, Tennessee, through eastern Kentucky, to Mingo County, West Virginia Stratigraphic framework of Cambrian and Ordovician rocks in the Appalachian basin from Sequatchie County, Tennessee, through eastern Kentucky, to Mingo County, West Virginia
This chapter is a re-release of U.S. Geological Survey Scientific Investigations Map 2994, of the same title, by Ryder and others (2008).
Authors
Robert T. Ryder, Robert D. Crangle, John E. Repetski, Anita G. Harris
Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian basin from Campbell County, Kentucky, to Tazewell County, Virginia Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian basin from Campbell County, Kentucky, to Tazewell County, Virginia
This chapter is a re-release of U.S. Geological Survey Miscellaneous Investigations Series Map I-2530, of the same title, by Ryder and others (1997; online version 2.0 revised and digitized by Erika E. Lentz, 2004). Version 2.0 is a digital version of the original and also includes the gamma-ray well log traces.
Authors
Robert T. Ryder, John E. Repetski, Anita G. Harris, Erika E. Lentz
Stratigraphic framework of cambrian and ordovician rocks in the central Appalachian basin from Lake County, Ohio, to Juniata County, Pennsylvania Stratigraphic framework of cambrian and ordovician rocks in the central Appalachian basin from Lake County, Ohio, to Juniata County, Pennsylvania
This chapter is a re-release of U.S. Geological Survey Miscellaneous Investigations Series Map I-2200, of the same title, by Ryder (1992; online version 1.0 revised and digitized by Robert D. Crangle, Jr., 2002). Version 1.0 is a digital verson of the original and also includes the gamma-ray well log traces.
Authors
Robert T. Ryder, Robert D. Crangle
Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian basin from Medina County, Ohio, through southwestern and south-central Pennsylvania to Hampshire County, West Virginia Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian basin from Medina County, Ohio, through southwestern and south-central Pennsylvania to Hampshire County, West Virginia
This chapter is a re-release of U.S. Geological Survey Bulletin 1839-K, of the same title, by Ryder and others (1992; online version 2.0 revised and digitized by Robert D. Crangle, Jr., 2003). It consists of one file of the report text as it appeared in USGS Bulletin 1839-K and a second file containing the cross section, figures 1 and 2, and tables 1 and 2 on one oversized sheet; the...
Authors
Robert T. Ryder, Anita G. Harris, John E. Repetski, Robert D. Crangle
Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian basin from Richland County, Ohio, to Rockingham County, Virginia Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian basin from Richland County, Ohio, to Rockingham County, Virginia
This chapter is a re-release of U.S. Geological Survey Miscellaneous Investigations Series Map I-2264, of the same title, by Ryder (1991; online version 1.0 revised and digitized by Robert D. Crangle, Jr., 2003). Version 1.0 is a digital version of the original and also includes the gamma-ray well log traces.
Authors
Robert T. Ryder, Robert D. Crangle
Stream classification of the Apalachicola-Chattahoochee-Flint River System to support modeling of aquatic habitat response to climate change Stream classification of the Apalachicola-Chattahoochee-Flint River System to support modeling of aquatic habitat response to climate change
A stream classification and associated datasets were developed for the Apalachicola-Chattahoochee-Flint River Basin to support biological modeling of species response to climate change in the southeastern United States. The U.S. Geological Survey and the Department of the Interior’s National Climate Change and Wildlife Science Center established the Southeast Regional Assessment Project...
Authors
Caroline M. Elliott, Robert B. Jacobson, Mary Freeman
Stream seepage and groundwater levels, Wood River Valley, south-central Idaho, 2012-13 Stream seepage and groundwater levels, Wood River Valley, south-central Idaho, 2012-13
Stream discharge and water levels in wells were measured at multiple sites in the Wood River Valley, south-central Idaho, in August 2012, October 2012, and March 2013, as a component of data collection for a groundwater-flow model of the Wood River Valley aquifer system. This model is a cooperative and collaborative effort between the U.S. Geological Survey and the Idaho Department of...
Authors
James R. Bartolino