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: 85088
Identify potential lock treatment options to prevent movement of aquatic invasive species through the Chicago Area Waterways System (CAWS) Identify potential lock treatment options to prevent movement of aquatic invasive species through the Chicago Area Waterways System (CAWS)
Authors
Terrance D. Hubert, Michael A. Boogaard, Kim T. Fredricks
Application of a Weighted Regression Model for Reporting Nutrient and Sediment Concentrations, Fluxes, and Trends in Concentration and Flux for the Chesapeake Bay Nontidal Water-Quality Monitoring Network, Results Through Water Year 2012 Application of a Weighted Regression Model for Reporting Nutrient and Sediment Concentrations, Fluxes, and Trends in Concentration and Flux for the Chesapeake Bay Nontidal Water-Quality Monitoring Network, Results Through Water Year 2012
In the Chesapeake Bay watershed, estimated fluxes of nutrients and sediment from the bay’s nontidal tributaries into the estuary are the foundation of decision making to meet reductions prescribed by the Chesapeake Bay Total Maximum Daily Load (TMDL) and are often the basis for refining scientific understanding of the watershed-scale processes that influence the delivery of these...
Authors
Jeffrey G. Chanat, Douglas L. Moyer, Joel D. Blomquist, Kenneth E. Hyer, Michael J. Langland
Reconnaissance sediment budget for selected watersheds of West Maui, Hawai‘i Reconnaissance sediment budget for selected watersheds of West Maui, Hawai‘i
Episodic runoff brings suspended sediment to the nearshore waters of West Maui, Hawaiʻi. Even small rainfalls create visible plumes over a few hours. We used mapping, field experiments, and analysis of recent (July 19–20, 2014) and historic rainfall to estimate sources of land-based pollution for two watersheds in West Maui: Honolua, and Honokōwai. Former agricultural fields and some...
Authors
Jonathan D. Stock, Kim A. Falinski, Tova Callender
Evaluation of the hydraulic and biological performance of the portable floating fish collector at Cougar Reservoir and Dam, Oregon, 2014 Evaluation of the hydraulic and biological performance of the portable floating fish collector at Cougar Reservoir and Dam, Oregon, 2014
The biological and hydraulic performance of a new portable floating fish collector (PFFC) located in a cul-de-sac within the forebay of Cougar Dam, Oregon, was evaluated during 2014. The purpose of the PFFC was to explore surface collection as a means to capture juvenile salmonids at one or more sites using a small, cost-effective, pilot-scale device. The PFFC used internal pumps to draw
Authors
John W. Beeman, Scott D. Evans, Philip V. Haner, Hal C. Hansel, Amy C. Hansen, Gabriel S. Hansen, Tyson W. Hatton, Jamie M. Sprando, Collin D. Smith, Noah S. Adams
USGS lidar science strategy—Mapping the technology to the science USGS lidar science strategy—Mapping the technology to the science
Authors
Jason M. Stoker, John Brock, Christopher E. Soulard, Kernell G. Ries, Larry J. Sugarbaker, Wesley E. Newton, Patricia K. Haggerty, Kathy Lee, John A. Young
Determination of pesticides and pesticide degradates in filtered water by direct aqueous-injection liquid chromatography-tandem mass spectrometry Determination of pesticides and pesticide degradates in filtered water by direct aqueous-injection liquid chromatography-tandem mass spectrometry
A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed for determination of 229 pesticides compounds (113 pesticides and 116 pesticide degradates) in filtered water samples from stream and groundwater sites. The pesticides represent a broad range of chemical classes and were selected based on criteria such as current-use intensity, probability of occurrence in...
Authors
Mark W. Sandstrom, Leslie K. Kanagy, Cyrissa A. Anderson, Christopher J. Kanagy
Assessment of undiscovered continuous gas resources of the Ordos Basin Province, China, 2015 Assessment of undiscovered continuous gas resources of the Ordos Basin Province, China, 2015
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean resources of 28 trillion cubic feet of tight gas and 5.6 trillion cubic feet of coalbed gas in upper Paleozoic rocks in the Ordos Basin Province, China.
Authors
Ronald R. Charpentier, Timothy R. Klett, Christopher J. Schenk, Michael E. Brownfield, Stephanie B. Gaswirth, Phuong A. Le, Heidi M. Leathers-Miller, Kristen R. Marra, Tracey J. Mercier
Response of periphyton fatty acid composition to supplemental flows in the upper Esopus Creek, Catskill Mountains, New York Response of periphyton fatty acid composition to supplemental flows in the upper Esopus Creek, Catskill Mountains, New York
Fatty acid analysis of periphyton is an emerging tool for assessing the condition of a stream ecosystem on the basis of its water quality. The study presented in this report was designed to test the hypothesis that periphyton communities have a fatty acid profile that can detect excessive turbidity and suspended sediment. The fatty acid composition of periphyton was assessed during two...
Authors
Scott D. George, Anne G. Ernst, Barry P. Baldigo, Dale C. Honeyfield
Evaluation of the 8310-N-S manufactured by Sutron–Results of bench, temperature, and field deployment testing Evaluation of the 8310-N-S manufactured by Sutron–Results of bench, temperature, and field deployment testing
The Sutron 8310-N-S (8310) data collection platform (DCP) manufactured by Sutron Corporation was evaluated by the U.S. Geological Survey (USGS) Hydrologic Instrumentation Facility (HIF) for conformance to the manufacturer’s specifications for recording and transmitting data. The 8310-N-S is a National Electrical Manufacturers Association (NEMA)-enclosed DCP with a built-in Geostationary
Authors
Gerald A. Kunkle
The Aleutian-Bering Climate Vulnerability Assessment The Aleutian-Bering Climate Vulnerability Assessment
Recent efforts to develop downscaled climate projections for the Bering Sea and Aleutians created an opportunity to better assess regional vulnerability to climate change. The Aleutian Bering Climate Vulnerability Assessment (ABCVA) was launched in 2014 to bring together regional science expertise and stakeholder interests in a rapid evaluation of the implications of future climate...
Management-driven science synthesis: An evaluation of Everglades restoration trajectories Management-driven science synthesis: An evaluation of Everglades restoration trajectories
The Synthesis of Everglades Restoration andEcosystem Services (SERES) Project was funded in 2010 by the U.S. Department of Interior (DOI) through the Critical Ecosystem Studies Initiative (CESI) and established to synthesize the ever-growing body of Everglades scientific information with the goal of addressing topics that have hampered restoration since the Comprehensive Everglades...
Authors
Stephen E Davis, James M. Beerens, Rena R. Borkhataria, Daniel L. Childers, Jay Choi, Steven M Davis, Carl Fitz, Evelyn Gaiser, Hiram Henriquez, Thomas E. Lodge, Judson Harvey, Frank Marshall, Bobby McCormick, Melodie Naja, Todd Osborne, Michael S. Ross, Jay Sah, Joel C. Trexler, Thomas Van Lent, Paul R. Wetzel
Streamflow Streamflow
This indicator describes trends in the amount of water carried by streams across the United States, as well as the timing of runoff associated with snowmelt.
Authors
Michael McHale, Robert W. Dudley, Glenn A. Hodgkins