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.
Filter Total Items: 85087
Report of the River Master of the Delaware River for the period December 1, 2016–November 30, 2017 Report of the River Master of the Delaware River for the period December 1, 2016–November 30, 2017
Authors
Kendra L. Russell, William J. Andrews, Vincent J. DiFrenna, J. Michael Norris, Robert R. Mason,
Least Bell's Vireos and Southwestern Willow Flycatchers—Breeding activities and habitat use—2023 annual report Least Bell's Vireos and Southwestern Willow Flycatchers—Breeding activities and habitat use—2023 annual report
Authors
Alexandra Houston, Lisa D. Allen, Shannon M. Mendia, Barbara E. Kus
Water-quality constituent concentrations and loads computed using real-time water-quality data for the Republican River, Clay Center, Kansas, August 2018 through July 2023 Water-quality constituent concentrations and loads computed using real-time water-quality data for the Republican River, Clay Center, Kansas, August 2018 through July 2023
Milford Lake, the largest reservoir by surface area in Kansas, has had confirmed harmful algal blooms every summer since reporting began in 2011, except 2018–19. Milford Lake has been listed as impaired and designated hypereutrophic under section 303(d) of the 1972 Clean Water Act. In 2014, the Kansas Department of Health and Environment established a total maximum daily load for...
Authors
Ariele R. Kramer, Justin R. Abel
Wildland fire effects on sediment, salinity, and selenium yields in a basin underlain by Cretaceous marine shales near Rangely, Colorado Wildland fire effects on sediment, salinity, and selenium yields in a basin underlain by Cretaceous marine shales near Rangely, Colorado
Understanding and quantifying soil erosion from rangelands is a high priority for land managers, especially in areas underlain by Cretaceous Mancos Shale, which is a natural source of sediment, salinity, and selenium to surface waters in many areas of western Colorado and eastern Utah. The purpose of this report is to present the results of a U.S. Geological Survey study that assessed...
Authors
Natalie K. Day, Todd M. Preston, Patrick C. Longley
Monitoring and simulation of hydrology, suspended sediment, and nutrients in selected tributary watersheds of Lake Erie, New York Monitoring and simulation of hydrology, suspended sediment, and nutrients in selected tributary watersheds of Lake Erie, New York
The U.S. Geological Survey, in cooperation with Erie County, New York, the New York State Department of Environmental Conservation, and the Great Lakes Restoration Initiative, collected water-quality samples in nine selected New York tributaries to Lake Erie, computed estimates of suspended sediment and nutrient loads using the R scripting package rloadest and used the Soil and Water...
Authors
Katherine R. Merriman, Benjamin N. Fisher, Elizabeth A. Nystrom, Aubrey R. Bunch, Robert J. Welk, William M. Kappel
Developing version 2 of satellite-estimated precipitation monthly reports for selected locations in the Republic of the Marshall Islands Developing version 2 of satellite-estimated precipitation monthly reports for selected locations in the Republic of the Marshall Islands
The Republic of the Marshall Islands (RMI; also known as the Marshall Islands) is a nation of more than 30 low-lying atolls and islands, most of which are inhabited, dispersed across an Exclusive Economic Zone over 770,000 square miles in the tropical central north Pacific Ocean. The study objectives and methods were originally presented in U.S. Geological Survey Data Report 1181 and are
Authors
Gabriel B. Senay, David A. Helweg, Stefanie Kagone, Thomas Cecere, Tiare Eastmond, Amy Koch, Kurtis Nelson, Jack Randon
Volcanoes of American Samoa Volcanoes of American Samoa
Authors
Natalia I. Deligne, Drew T. Downs, Elinor Lutu-McMoore, Steven Sobieszczyk, Wendy K. Stovall
A literature review and hypsometric analysis to support decisions on trout management flows on the Colorado River downstream from Glen Canyon Dam A literature review and hypsometric analysis to support decisions on trout management flows on the Colorado River downstream from Glen Canyon Dam
Authors
Mariah Giardina, Josh Korman, Michael D. Yard, Scott Wright, Matthew A. Kaplinski, Glenn Bennett
Projected sea-level rise and high tide flooding at Big Cypress National Preserve, Florida Projected sea-level rise and high tide flooding at Big Cypress National Preserve, Florida
Authors
Hana R. Thurman, Nicholas M. Enwright, Michael J. Osland, Davina L. Passeri, Richard H. Day, Bethanie M. Simons, Jeffrey J. Danielson, William M. Cushing
Triangle Area Water Supply Monitoring Project, North Carolina Triangle Area Water Supply Monitoring Project, North Carolina
Authors
Rosemary M. Fanelli, Deanna Hardesty, J. Diaz
Quantifying the coastal hazard risk reduction benefits of coral reef restoration in the U.S. Virgin Islands Quantifying the coastal hazard risk reduction benefits of coral reef restoration in the U.S. Virgin Islands
Coastal habitat restoration, especially of coral reef ecosystems, can significantly reduce the exposure of coastal communities to natural hazards and, consequently, the risk of wave-driven flooding. Likewise, reef degradation can increase coastal flood risks to people and property. In this study, the valuation of coral reefs in the United States Virgin Islands (USVI), along the coasts of...
Authors
Camila Gaido-Lasserre, Valerie Pietsch McNulty, Curt D. Storlazzi, Borja Reguero, Denise Perez, Sandra Fogg, Kristen A. Cumming, Jessica Ward, Steve Schill, Celeste Jarvis, Michael W. Beck