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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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Occurrence and transport of selected constituents in streams near the Stibnite mining area, Central Idaho, 2012–14 Occurrence and transport of selected constituents in streams near the Stibnite mining area, Central Idaho, 2012–14
Mining of stibnite (antimony sulfide), tungsten, gold, silver, and mercury near the town of Stibnite in central Idaho has left a legacy of trace element contamination in local streams. Water-quality and streamflow monitoring data from a network of five streamflow-gaging stations were used to estimate trace-element and suspended-sediment loads and flow-weighted concentrations in the...
Authors
Alexandra B. Etheridge
Stream geomorphic and habitat data from a baseline study of Underwood Creek, Wisconsin, 2012 Stream geomorphic and habitat data from a baseline study of Underwood Creek, Wisconsin, 2012
Geomorphic and habitat data were collected along Underwood Creek as part of a larger study of stream water quality conditions in the greater Milwaukee, Wisconsin, area. The data were collected to characterize baseline physical conditions in Underwood Creek prior to a potential discharge of wastewater return flow to the stream from the city of Waukesha, Wis. Geomorphic and habitat...
Authors
Benjamin M. Young, Faith A. Fitzpatrick, James D. Blount
Characterization of hydrology and water quality of Piceance Creek in the Alkali Flat area, Rio Blanco County, Colorado, March 2012 Characterization of hydrology and water quality of Piceance Creek in the Alkali Flat area, Rio Blanco County, Colorado, March 2012
Previous studies by the U.S. Geological Survey identified Alkali Flat as an area of groundwater upwelling, with increases in concentrations of total dissolved solids, and streamflow loss, but additional study was needed to better characterize these observations. The U.S. Geological Survey, in cooperation with the Bureau of Land Management, White River Field Office, conducted a study to
Authors
Judith C. Thomas
Hydrodynamic assessment data associated with the July 2010 line 6B spill into the Kalamazoo River, Michigan, 2012–14 Hydrodynamic assessment data associated with the July 2010 line 6B spill into the Kalamazoo River, Michigan, 2012–14
Hydrodynamic-assessment data for the Kalamazoo River were collected by the U.S. Geological Survey (USGS) during 2012–14 to augment other hydrodynamic data-collection efforts by Enbridge Energy L.P. and the U.S. Environmental Protection Agency associated with the 2010 Enbridge Line 6B oil spill. Specifically, the USGS data-collection efforts were focused on additional background data...
Authors
Paul C. Reneau, David T. Soong, Christopher J. Hoard, Faith A. Fitzpatrick
Restoration handbook for sagebrush steppe ecosystems with emphasis on greater sage-grouse habitat—Part 2. Landscape level restoration decisions Restoration handbook for sagebrush steppe ecosystems with emphasis on greater sage-grouse habitat—Part 2. Landscape level restoration decisions
Sagebrush steppe ecosystems in the United States currently (2015) occur on only about one-half of their historical land area because of changes in land use, urban growth, and degradation of land, including invasions of non-native plants. The existence of many animal species depends on the existence of sagebrush steppe habitat. The greater sage-grouse (Centrocercus urophasianus) is a...
Authors
David A. Pyke, Steven T. Knick, Jeanne C. Chambers, Mike Pellant, Richard F. Miller, Jeffrey L. Beck, Paul S. Doescher, Eugene W. Schupp, Bruce A. Roundy, Mark Brunson, James D. McIver
Coastwide Reference Monitoring System (CRMS) Vegetation Volume Index: An assessment tool for marsh habitat focused on the three-dimensional structure at CRMS vegetation monitoring stations Coastwide Reference Monitoring System (CRMS) Vegetation Volume Index: An assessment tool for marsh habitat focused on the three-dimensional structure at CRMS vegetation monitoring stations
A Vegetation Volume (VV) variable and Vegetation Volume Index (VVI) have been developed for the Coastwide Reference Monitoring System (CRMS). The VV is a measure of the amount of three-dimensional vegetative structure present at each CRMS site and is based on vegetation data collected annually. The VV uses 10 stations per CRMS site to quantify four vegetation layers: carpet, herbaceous...
Authors
William B. Wood, Jenneke M. Visser, Sarai C. Piazza, Leigh A. Sharp, Laura C. Hundy, Tommy E. McGinnis
Regression Equations for Monthly and Annual Mean and Selected Percentile Streamflows for Ungaged Rivers in Maine Regression Equations for Monthly and Annual Mean and Selected Percentile Streamflows for Ungaged Rivers in Maine
In an effort to delineate hydrologic conditions in Maine, the U.S. Geological Survey, in cooperation with the Maine Department of Transportation, used streamflow data to develop dependent variables for 130 regression equations for estimating monthly and annual mean and 1, 5, 10, 25, 50, 75, 90, 95, and 99 percentile streamflows for ungaged, unregulated rivers in Maine. Daily streamflow...
Authors
Robert W. Dudley
California State Waters Map Series — Offshore of Fort Ross, California California State Waters Map Series — Offshore of Fort Ross, California
Introduction 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...
Authors
Samuel Y. Johnson, Peter Dartnell, Nadine E. Golden, Stephen R. Hartwell, Mercedes D. Erdey, H. Gary Greene, Guy R. Cochrane, Rikk G. Kvitek, Michael W. Manson, Charles A. Endris, Bryan E. Dieter, Janet Watt, Lisa M. Krigsman, Ray W. Sliter, Erik N. Lowe, John L. Chin
Variability within nearshore ecosystems of the Gulf of Alaska Variability within nearshore ecosystems of the Gulf of Alaska
Nearshore marine habitats, which represent the interface among air, land and sea, form a critical component of the Gulf of Alaska (GOA) ecosystem. As an interface, the nearshore facilitates transfer of water, nutrients and biota between terrestrial and oceanic systems, creating zones of high productivity. The nearshore provides a variety of ecosystem services, including (1) nursery...
Authors
Brenda E. Ballachey, James L. Bodkin, Heather A. Coletti, Thomas A Dean, Daniel Esler, George G. Esslinger, Katrin Iken, Kimberly A. Kloecker, Brenda Konar, Mandy Lindeberg, Daniel Monson, Marnie Shepherd, Ben P. Weitzman
A framework for decision points to trigger adaptive management actions in long-term incidental take permits A framework for decision points to trigger adaptive management actions in long-term incidental take permits
Introduction The U.S. Fish and Wildlife Service (USFWS) has begun to issue incidental take permits (ITPs) to wind power companies to allow limited take of bird and bat species that are protected under the Endangered Species Act, the Bald and Golden Eagle Protection Act, or the Migratory Bird Treaty Act (Huso and others, 2015). Expected take rates are determined using scientifically based...
Authors
Daniel Dalthorp, Manuela M. Huso
Assessment of undiscovered sandstone-hosted uranium resources in the Texas Coastal Plain, 2015 Assessment of undiscovered sandstone-hosted uranium resources in the Texas Coastal Plain, 2015
The U.S. Geological Survey estimated a mean of 220 million pounds of recoverable uranium oxide (U3O8 ) remaining as potential undiscovered resources in southern Texas. This estimate used a geology-based assessment method for Tertiary sandstone-hosted uranium deposits in the Texas Coastal Plain sedimentary strata (fig.1).
Authors
Mark J. Mihalasky, Susan M. Hall, Jane M. Hammarstrom, Kathleen R. Tureck, Mark T. Hannon, George N. Breit, Robert A. Zielinski, Brent Elliott
Petrology and reservoir quality of the Gaikema Sandstone: Initial impressions Petrology and reservoir quality of the Gaikema Sandstone: Initial impressions
The Division of Geological & Geophysical Surveys (DGGS) and Division of Oil & Gas (DOG) are currently conducting a study of the hydrocarbon potential of Cook Inlet basin (LePain and others, 2011). The Tertiary stratigraphic section of the basin includes coal-bearing units that are prolific gas reservoirs, particularly the Neogene sandstones. The Paleogene sandstones are locally prolific...
Authors
Kenneth P. Helmold, Richard G. Stanley