Reports
Science Quality and Integrity
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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Hurricane Sandy washover deposits on southern Long Beach Island, New Jersey Hurricane Sandy washover deposits on southern Long Beach Island, New Jersey
Sedimentologic and topographic data from Hurricane Sandy washover deposits were collected from southern Long Beach Island, New Jersey, in order to document changes to the barrier-island beaches, dunes, and coastal wetlands caused by Hurricane Sandy and subsequent storm events. These data will provide a baseline dataset for use in future coastal change descriptive and predictive studies...
Authors
James M. Bishop, Bruce M. Richmond, Nicholas J. Zaremba, Brent D. Lunghino, Haunani H. Kane
Near-field receiving water monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in south San Francisco Bay, California; 2015 Near-field receiving water monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in south San Francisco Bay, California; 2015
Trace-metal concentrations in sediment and in the clam Macoma petalum (formerly reported as Macoma balthica), clam reproductive activity, and benthic macroinvertebrate community structure were investigated in a mudflat 1 kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant (PARWQCP) in South San Francisco Bay, California. This report includes data...
Authors
Daniel J. Cain, Janet K. Thompson, Jeffrey Crauder, Francis Parchaso, A. Robin Stewart, Matthew A. Turner, Michelle I. Hornberger, Samuel N. Luoma
The structure and composition of Holocene coral reefs in the Middle Florida Keys The structure and composition of Holocene coral reefs in the Middle Florida Keys
The Florida Keys reef tract (FKRT) is the largest coral-reef ecosystem in the continental United States. The modern FKRT extends for 362 kilometers along the coast of South Florida from Dry Tortugas National Park in the southwest, through the Florida Keys National Marine Sanctuary (FKNMS), to Fowey Rocks reef in Biscayne National Park in the northeast. Most reefs along the FKRT are...
Authors
Lauren T. Toth, Anastasios Stathakopoulos, Ilsa B. Kuffner
An international borderland of concern: Conservation of biodiversity in the Lower Rio Grande Valley An international borderland of concern: Conservation of biodiversity in the Lower Rio Grande Valley
The Lower Rio Grande Valley (LRGV) of southern Texas is located on the United States-Mexico borderland and represents a 240-kilometer (150-mile) linear stretch that ends at the Gulf of Mexico. The LRGV represents a unique transition between temperate and tropical conditions and, as such, sustains an exceptionally high diversity of plants and animals—some of them found in few, or no other...
Authors
David M. Leslie
Water-quality trends and constituent-transport analysis for selected sampling sites in the Milltown Reservoir/Clark Fork River Superfund Site in the upper Clark Fork Basin, Montana, water years 1996–2015 Water-quality trends and constituent-transport analysis for selected sampling sites in the Milltown Reservoir/Clark Fork River Superfund Site in the upper Clark Fork Basin, Montana, water years 1996–2015
During the extended history of mining in the upper Clark Fork Basin in Montana, large amounts of waste materials enriched with metallic contaminants (cadmium, copper, lead, and zinc) and the metalloid trace element arsenic were generated from mining operations near Butte and milling and smelting operations near Anaconda. Extensive deposition of mining wastes in the Silver Bow Creek and...
Authors
Steven K. Sando, Aldo V. Vecchia
Pacific walrus coastal haulout database, 1852-2016— Background report Pacific walrus coastal haulout database, 1852-2016— Background report
Walruses are large benthic predators that rest out of water between foraging bouts. Coastal “haulouts” (places where walruses rest) are formed by adult males in summer and sometimes by females and young when sea ice is absent, and are often used repeatedly across seasons and years. Understanding the geography and historical use of haulouts provides a context for conservation efforts. We...
Authors
Anthony S. Fischbach, Anatoly A. Kochnev, Joel L. Garlich-Miller, Chadwick V. Jay
Effects of aquifer storage and recovery activities on water quality in the Little Arkansas River and Equus Beds Aquifer, south-central Kansas, 2011–14 Effects of aquifer storage and recovery activities on water quality in the Little Arkansas River and Equus Beds Aquifer, south-central Kansas, 2011–14
The Equus Beds aquifer in south-central Kansas is aprimary water source for the city of Wichita. The Equus Beds aquifer storage and recovery (ASR) project was developed to help the city of Wichita meet increasing current (2016) and future water demands. The Equus Beds ASR project pumps water out of the Little Arkansas River during above-base flow conditions, treats it using drinking...
Authors
Mandy L. Stone, Jessica D. Garrett, Barry C. Poulton, Andrew C. Ziegler
Input-form data for the U.S. Geological Survey assessment of the Mississippian Barnett Shale of the Bend Arch-Fort Worth Basin Province, 2015 Input-form data for the U.S. Geological Survey assessment of the Mississippian Barnett Shale of the Bend Arch-Fort Worth Basin Province, 2015
In 2015, the U.S. Geological Survey (USGS) released an updated assessment of undiscovered, technically recoverable shale gas and shale oil resources of the Mississippian Barnett Shale in north-central Texas (Marra and others, 2015). The Barnett Shale was assessed using the standard continuous (unconventional) methodology established by the USGS for two assessment units (AUs): (1) Barnett
Authors
Kristen R. Marra, Ronald R. Charpentier, Christopher J. Schenk, Michael D. Lewan, Heidi M. Leathers-Miller, Timothy R. Klett, Stephanie B. Gaswirth, Phuong A. Le, Tracey J. Mercier, Janet K. Pitman, Marilyn E. Tennyson
Spatial and temporal assessment of back-barrier erosion on Cumberland Island National Seashore, Georgia, 2011–2013 Spatial and temporal assessment of back-barrier erosion on Cumberland Island National Seashore, Georgia, 2011–2013
Much research has been conducted to better understand erosion and accretion processes for the seaward zones of coastal barrier islands; however, at Cumberland Island National Seashore, Georgia, the greater management concern is the effect that erosion is having on the resources of the island’s western shoreline, or the back barrier. Catastrophic slumping and regular rates of erosion...
Authors
Daniel L. Calhoun, Jeffrey W. Riley
Assessment of continuous oil and gas resources of the Cooper Basin, Australia, 2016 Assessment of continuous oil and gas resources of the Cooper Basin, Australia, 2016
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean continuous resources of 482 million barrels of oil and 29.8 trillion cubic feet of gas in the Cooper Basin of Australia.
Authors
Christopher J. Schenk, Marilyn E. Tennyson, Tracey J. Mercier, Timothy R. Klett, Thomas M. Finn, Phuong A. Le, Michael E. Brownfield, Stephanie B. Gaswirth, Kristen R. Marra, Sarah J. Hawkins, Heidi M. Leathers-Miller
Missouri River Scaphirhynchus albus (pallid sturgeon) effects analysis—Integrative report 2016 Missouri River Scaphirhynchus albus (pallid sturgeon) effects analysis—Integrative report 2016
The Missouri River Pallid Sturgeon Effects Analysis was designed to carry out three components of an assessment of how Missouri River management has affected, and will affect, population dynamics of endangered Scaphirhynchus albus (pallid sturgeon): (1) collection of reliable scientific information, (2) critical assessment and synthesis of available data and analyses, and (3) analysis of...
Authors
Robert B. Jacobson, Mandy L. Annis, Michael E. Colvin, Daniel A. James, Timothy L. Welker, Michael J. Parsley
Low-flow frequency and flow duration of selected South Carolina streams in the Savannah and Salkehatchie River Basins through March 2014 Low-flow frequency and flow duration of selected South Carolina streams in the Savannah and Salkehatchie River Basins through March 2014
An ongoing understanding of streamflow characteristics of the rivers and streams in South Carolina is important for the protection and preservation of the State’s water resources. Information concerning the low-flow characteristics of streams is especially important during critical flow periods, such as during the historic droughts that South Carolina has experienced in the past few...
Authors
Toby D. Feaster, Wladmir B. Guimaraes