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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Simulation of regional groundwater flow and advective transport of per- and polyfluoroalkyl substances, Joint Base McGuire-Dix-Lakehurst and vicinity, New Jersey, 2018 Simulation of regional groundwater flow and advective transport of per- and polyfluoroalkyl substances, Joint Base McGuire-Dix-Lakehurst and vicinity, New Jersey, 2018
A three-dimensional numerical model of groundwater flow was developed and calibrated for the unconsolidated New Jersey Coastal Plain aquifers underlying Joint Base McGuire-Dix-Lakehurst (JBMDL) and vicinity, New Jersey, to evaluate groundwater flow pathways of per- and polyfluoroalkyl substances (PFAS) contamination associated with use of aqueous film forming foam (AFFF) at the base. The...
Authors
Alex R. Fiore, Susan J. Colarullo
Rangeland Condition Monitoring Assessment and Projection, 1985–2021 Rangeland Condition Monitoring Assessment and Projection, 1985–2021
The Rangeland Condition Monitoring Assessment and Projection (RCMAP) project quantifies the percentage cover of rangeland components across the western United States using Landsat imagery from 1985 to 2021. The RCMAP product suite consists of nine fractional components: annual herbaceous, bare ground, herbaceous, litter, nonsagebrush shrub, perennial herbaceous, sagebrush, shrub, and...
Authors
Matthew B. Rigge
National Civil Applications Center National Civil Applications Center
Authors
Paul M. Young
Sampling and analysis plan for the Koocanusa Reservoir and upper Kootenai River, Montana, water-quality monitoring program, 2021 Sampling and analysis plan for the Koocanusa Reservoir and upper Kootenai River, Montana, water-quality monitoring program, 2021
In 2021, the U.S. Geological Survey will collect water-quality samples and environmental data from 3 sites in Koocanusa Reservoir and from 1 site in the Kootenai River. The transboundary Koocanusa Reservoir is in southeastern British Columbia, Canada, and northwestern Montana, United States, and was formed with the construction of Libby Dam on the Kootenai River 26 kilometers upstream...
Authors
Sara L. Caldwell Eldridge, Melissa A. Schaar, Chad B. Reese, Ashley M. Bussell, Thomas Chapin
The effects of management practices on grassland birds—Clay-colored Sparrow (Spizella pallida) The effects of management practices on grassland birds—Clay-colored Sparrow (Spizella pallida)
Keys to Clay-colored Sparrow (Spizella pallida) management include providing grasslands with a shrub or forb component or shrub-dominated edge habitat, which includes dense grass and moderately high litter cover, and avoiding disturbances that completely eliminate woody vegetation. Clay-colored Sparrows have been reported to use habitats with 20–186 centimeters (cm) average vegetation...
Authors
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Melvin P. Nenneman, Betty R. Euliss
Advancing best practices for the analysis of the vulnerability of military installations in the Pacific Basin to coastal flooding under a changing climate – RC-2644 Advancing best practices for the analysis of the vulnerability of military installations in the Pacific Basin to coastal flooding under a changing climate – RC-2644
Coastal flooding takes many forms, ranging from major flooding associated with storms to minor flooding associated with exceptionally high tides and other oceanic and atmospheric phenomena on storm-free days. A major societal challenge is to understand and predict how flood magnitude and frequency will manifest at particular places and times, now and in the future. Of particular interest...
Authors
John Marra, William Sweet, Eric Leuliette, Michael Kruk, Ayesha Genz, Curt D. Storlazzi, Peter Ruggiero, Meredith Leung, Dylan L. Anderson, Mark Merrifield, Janet Becker, Ian Robertson, Matthew J. Widlansky, Philip R. Thompson, Fernando Mendez, Ana Rueda, Jose A.A. Antolinez, Laura Cagigal, Melissa Menendez, Hector Lobeto, Jayantha Obeysekera, Chris Chiesa
Survey of fish communities in tributaries to the Mohawk River, New York, 2019 Survey of fish communities in tributaries to the Mohawk River, New York, 2019
Fish communities of the Mohawk River and associated sections of the New York State Canal System have been well documented but little information is available regarding the status of fish communities in the extensive network of tributaries that feed the Mohawk River. This lack of information is problematic because changes in species distributions or general ecosystem health may go...
Authors
Scott D. George, Dylan R. Winterhalter, Barry P. Baldigo
Estimating flood magnitude and frequency for unregulated streams in Wisconsin Estimating flood magnitude and frequency for unregulated streams in Wisconsin
Flood frequency characteristics and estimated flood discharges for the 50-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities were computed at 299 streamgaged locations in Wisconsin. The State was divided into four flood frequency regions using a cluster analysis to produce regions which are homogeneous with respect to physical basin characteristics. Regression...
Authors
Sara B. Levin, Christopher A. Sanocki
The EDMAP Program: Training the next generation of geologic mappers The EDMAP Program: Training the next generation of geologic mappers
Authors
Jenna L. Shelton, Christopher S. Swezey, Michael Marketti
Appendix D: Synthesis element 1 (revised): Water temperature effects on fisheries and stream health in nontidal waters Appendix D: Synthesis element 1 (revised): Water temperature effects on fisheries and stream health in nontidal waters
A limited review of relevant scientific literature related to temperature sensitivities of fish species, stream health indicators, and any related geospatial information was conducted. Based on this review, we provide a syntheses of information related to nontidal waters in the Chesapeake Bay Rising stream temperatures will have a range of impacts on nontidal aquatic ecosystems. Cold...
Authors
Stephen Faulkner, Frank Borsuk, Greg Pond, Kevin Krause, Rosemary M. Fanelli, Matthew J. Cashman, Nathaniel P. Hitt, Benjamin Letcher
Product specification document for dynamic surface water extent from Harmonized Landsat and Sentinel-2 Product specification document for dynamic surface water extent from Harmonized Landsat and Sentinel-2
The primary purpose of this document is to convey product specifications of the OPERA (Observational Products for End-users from Remote-sensing Analysis) Level-3 Dynamic Surface Water Extent (DSWx) product that uses Harmonized Landsat-8 and Sentinel-2A/B (HLS) as the primary image-based inputs. This product, referred to by the short name DSWx-HLS, will be generated by the OPERA Data...
Authors
John W. Jones, G. Shiroma