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: 84719
Citizen science collaboration with the U.S. Geological Survey in Alaska Citizen science collaboration with the U.S. Geological Survey in Alaska
Citizen science is science undertaken by the public, usually in collaboration with professional scientific institutions. It encourages citizens to tackle real-world scientific problems and augments traditional science by expanding the coverage of data collection and by reducing costs of fieldwork in remote locations. Information collected by volunteers enables us all to gain a deeper...
Authors
Elizabeth Powers, Dee Williams
A not so sudden impact—Historical relations between conifers and insects can help predict damage by nonnative insects A not so sudden impact—Historical relations between conifers and insects can help predict damage by nonnative insects
The arrival and establishment of nonnative insects in North America is increasingly problematic. International trade has created opportunities to move wood products and nursery stock worldwide, which has increased the risk of insect introduction to regions or countries where they are not native. One group of researchers, the High-impact Insect Invasions Working Group (HIIWG), has...
Authors
Lekeah A. Durden, Ashley N. Schulz, Angela M. Mech, Kathryn A. Thomas
Chemical constituent concentrations in stream water, streambed sediment, and soils of Fort Belvoir, Virginia—A characterization of ambient conditions in 2019 Chemical constituent concentrations in stream water, streambed sediment, and soils of Fort Belvoir, Virginia—A characterization of ambient conditions in 2019
Introduction The U.S. Army Fort Belvoir (FTBL) installation is on the banks of the Potomac River in Fairfax County, northeastern Virginia. The installation was founded by the U.S. Army during World War I. It has been home to a variety of military organizations over the course of its more than 100-year history and currently houses more than 145 mission partners. The installation consists...
Authors
Karen C. Rice, Douglas B. Chambers
Groundwater quality in relation to drinking water health standards and geochemical characteristics for 54 domestic wells in Clinton County, Pennsylvania, 2017 Groundwater quality in relation to drinking water health standards and geochemical characteristics for 54 domestic wells in Clinton County, Pennsylvania, 2017
Despite the reliance on groundwater by approximately 2.4 million rural Pennsylvania residents, publicly available data to characterize the quality of private well water are limited. As part of a regional effort to characterize groundwater in rural areas of Pennsylvania, samples from 54 domestic wells in Clinton County were collected and analyzed in 2017. The samples were evaluated for a...
Authors
John W. Clune, Charles A. Cravotta
A standard operating procedure for the preparation of purposely killed juvenile salmon used to test survival model assumptions A standard operating procedure for the preparation of purposely killed juvenile salmon used to test survival model assumptions
This document describes a standard operating procedure (SOP) for the preparation of purposely killed juvenile salmon, implanted with telemetry transmitters, to be released into rivers, lakes, or streams to test one of the survival model assumptions. Procedures for releases of purposely killed fish (hereinafter dead fish releases) were developed by staff from the U.S. Geological Survey’s...
Authors
Ryan G. Tomka, Theresa L. Liedtke, Conrad Frost, Collin D. Smith
A guidebook to spatial datasets for conservation planning under climate change in the Pacific Northwest A guidebook to spatial datasets for conservation planning under climate change in the Pacific Northwest
This guidebook provides user-friendly overviews of a variety of spatial datasets relevant to conservation and management of natural resources in the face of climate change in the Pacific Northwest, United States. Each guidebook chapter was created using a standardized template to summarize a spatial dataset or a group of closely related datasets. Datasets were selected according to...
Authors
Jennifer M. Cartwright, Travis Belote, Kyle W. Blasch, Steve Campbell, Jeanne C. Chambers, Raymond J. Davis, Solomon Dobrowski, Jason B. Dunham, Diana Gergel, Daniel Isaak, Kristin Jaeger, Meade Krosby, Jesse Langdon, Joshua J. Lawler, Caitlin E. Littlefield, Charles H. Luce, Jeremy D Maestas, Anthony Martinez, Arjan J.H. Meddens, Julia Michalak, Sean A. Parks, Wendy Peterman, Ken Popper, Chris Ringo, Roy Sando, Michael Schindel, Diana Stralberg, David M. Theobald, Nathan Walker, Chad Wilsey, Zhiqiang Yang, Andrew Yost
Comparison of storm runoff models for a small watershed in an urban metropolitan area, Albuquerque, New Mexico Comparison of storm runoff models for a small watershed in an urban metropolitan area, Albuquerque, New Mexico
In order to comply with a current U.S. Environmental Protection Agency watershed-based National Pollutant Discharge Elimination System permit, the City of Albuquerque required a better understanding of the rainfall-runoff processes in its small urban watersheds. That requirement prompted the initiation of the assessment of three existing watershed models that were developed to simulate...
Authors
Zachary M. Shephard, Kyle R. Douglas-Mankin
Monitoring and real-time modeling of Escherichia coli bacteria for the Chattahoochee River, Chattahoochee River National Recreation Area, Georgia, 2000–2019 Monitoring and real-time modeling of Escherichia coli bacteria for the Chattahoochee River, Chattahoochee River National Recreation Area, Georgia, 2000–2019
The Chattahoochee River National Recreation Area (CRNRA) is a National Park Service unit/park with 48 miles of urban waterway in the Atlanta metropolitan area. The Chattahoochee River within the CRNRA is a popular place for water-based recreation but is known to periodically experience elevated levels of fecal-coliform bacteria associated with warm-blooded animals that can result in a...
Authors
Brent T. Aulenbach, Anna M. McKee
Pesticide concentrations associated with augmented flow pulses in the Yolo Bypass and Cache Slough Complex, California Pesticide concentrations associated with augmented flow pulses in the Yolo Bypass and Cache Slough Complex, California
Surface-water and suspended-sediment samples were collected and analyzed by the U.S. Geological Survey for multiple current-use pesticides and pesticide degradates approximately every 2 weeks at up to five sites in the Yolo Bypass and Cache Slough Complex before, during, and after augmented flow pulses in summer and fall 2016 and 2018 as well as during ambient flow conditions in summer...
Authors
James L. Orlando, Matt De Parsia, Corey J. Sanders, Michelle L. Hladik, Jared Frantzich
Flowering plants preferred by bees of the Prairie Pothole Region Flowering plants preferred by bees of the Prairie Pothole Region
Land managers have stressed the need for improved pollinator habitat on private and public lands of the Prairie Pothole Region. Understanding flowering plant preferences of pollinators will improve the cost-effectiveness of conservation seeding mixes. The purpose of this fact sheet is to assist conservation planners and producers with developing seed mixes by highlighting flowering...
Authors
Stacy C. Simanonok, Clint Otto
Brianna postcard Brianna postcard
Brianna is a hydrologist in the Hydrologic Investigations (Studies) Unit. She received a bachelor of science degree in chemical engineering and a master’s degree in civil engineering from the University of Kansas.
Authors
Brad postcard Brad postcard
Brad is a hydrologist in the Surface Water Investigation Unit. He received his bachelor of science degree in natural sciences from Concordia University in Wisconsin and his master’s degree in freshwater sciences from the University of Wisconsin-Milwaukee.
Authors