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: 84799
Determining low-flow conditions at select streams to Barnegat Bay-Little Egg Harbor as the first step towards the development of ecological-flow targets Determining low-flow conditions at select streams to Barnegat Bay-Little Egg Harbor as the first step towards the development of ecological-flow targets
Maintaining streamflow to support human water needs and ecosystem services requires a fundamental understanding of the relations between changes in streamflow processes and ecosystem responses. Changes in the natural patterns in flow, geology, and topography alter the habitats that aquatic organisms rely on for food, shelter, and reproduction. The U.S. Geological Survey (USGS)...
Authors
Christine M. Wieben, Jonathan G. Kennen, Thomas P. Suro
Foundational science in flight—USGS bird programs support conservation, culture, and a thriving U.S. economy Foundational science in flight—USGS bird programs support conservation, culture, and a thriving U.S. economy
Birds are vital to our economy, ecosystems, and cultural heritage. Investing in bird conservation benefits communities, businesses, and working lands while reinforcing our nation’s legacy of stewardship and biodiversity. By valuing birds, we ensure a richer, healthier, and more vibrant future for all Americans. The USGS leads two national bird monitoring programs Thriving bird...
Authors
David Ziolkowski, Antonio Celis-Murillo, Jenn Malpass, Keith L. Pardieck, Julien Martin, Lauren Emily Walker
Updating and recalibrating the integrated Santa Rosa Plain Hydrologic Model to assess stream depletion and to simulate future climate and management scenarios in Santa Rosa, Sonoma County, California Updating and recalibrating the integrated Santa Rosa Plain Hydrologic Model to assess stream depletion and to simulate future climate and management scenarios in Santa Rosa, Sonoma County, California
The Santa Rosa Plain Hydrologic Model (SRPHM) was developed and published in 2014 through a collaboration between the U.S. Geological Survey (USGS) and Sonoma Water to analyze the hydrologic system in the Santa Rosa Plain watershed, help meet the increasing demand for fresh water, and prepare for future uncertainties in water resources. The original model simulated hydrological...
Authors
Ayman H. Alzraiee, Andrew Rich, Linda R. Woolfenden, Derek W. Ryter, Enrique Triana, Richard G. Niswonger
Assessment of effects of channelization mitigation alternatives of Stoney Brook, Carlton and St. Louis Counties, Minnesota Assessment of effects of channelization mitigation alternatives of Stoney Brook, Carlton and St. Louis Counties, Minnesota
The U.S. Geological Survey, in cooperation with the Fond du Lac Band of Lake Superior Chippewa (FDLB), studied the effects of channel modification alternatives on lake levels and floodplain inundation in the Stoney Brook watershed in northeast Minnesota. Northern wild rice (Zizania palustris), also referred to as manoomin by the Ojibwe/Chippewa people, is a natural and cultural resource...
Authors
Charles V. Cigrand
U.S. Geological Survey Cooperative Research Units program U.S. Geological Survey Cooperative Research Units program
This fact sheet provides a 10-year overview of the U.S. Geological Survey Cooperative Research Units program. It highlights long term accomplishments for the program's mission of applied research, graduate education and technical assistance to the partners.
Authors
Elise R. Irwin, Tess M. McConnell, Donald E. Dennerline, Kevin L. Pope, Jonathan R. Mawdsley
Lunar grid systems, coordinate systems, and map projections for the Artemis missions and lunar surface navigation Lunar grid systems, coordinate systems, and map projections for the Artemis missions and lunar surface navigation
Foreward This document contains design specifications of a navigational standard for the Moon, including a Lunar Transverse Mercator system, a Lunar Polar Stereographic system, a Lunar Grid Reference System, and a unique coordinate structure, Artemis Condensed Coordinates, for Artemis mission navigation and lunar surface science. The National Aeronautics and Space Administration (NASA)...
Authors
Mark T McClernan, Michael L. Dennis, Ike H. Theriot, Trent M. Hare, Brent A. Archinal, Lillian R. Ostrach, Marc A. Hunter, Matthew J. Miller, Ross A. Beyer, Andrew M. Annex, Samuel J. Lawrence
U.S. Geological Survey Cooperative Research Units Program—A hawk’s view of 2024 U.S. Geological Survey Cooperative Research Units Program—A hawk’s view of 2024
Introduction The U.S. Geological Survey Cooperative Fish and Wildlife Research Units (USGS CRU) program was established in 1935 and codified by Congress in 1960 to enhance graduate education in wildlife and fisheries sciences and to facilitate research and technical assistance among natural resource agencies and universities on fisheries and wildlife management topics of mutual concern...
Authors
Elise R. Irwin, Tess M. McConnell, Donald E. Dennerline, Kevin L. Pope, Jonathan R. Mawdsley
Peak streamflow trends in Minnesota and their relation to changes in climate, water years 1921–2020 Peak streamflow trends in Minnesota and their relation to changes in climate, water years 1921–2020
This report chapter summarizes the effect of hydroclimatic variability of annual peak streamflow in Minnesota and is part of a larger U.S. Geological Survey multistate study to assess potential nonstationarity in annual peak streamflows across the Midwest. Spatial and temporal patterns were examined for nonstationarity in annual peak streamflow, daily mean streamflow, and modeled...
Authors
Tara Williams-Sether, Chris Sanocki
Peak streamflow trends in North Dakota and their relation to changes in climate, water years 1921–2020 Peak streamflow trends in North Dakota and their relation to changes in climate, water years 1921–2020
Standardized guidelines for completing flood-flow frequency analyses are presented in a U.S. Geological Survey Techniques and Methods report known as Bulletin 17C, https://doi.org/10.3133/tm4B5. In recent decades (since about 2000), a better understanding of long-term climatic persistence (periods of clustered floods or droughts, or wet or dry periods) and concerns about potential...
Authors
Karen R. Ryberg, Tara Williams-Sether
North American Waterfowl Management Plan survey regional profile—Southeast region North American Waterfowl Management Plan survey regional profile—Southeast region
Executive Summary Gaining a better understanding of the human dimensions of waterfowl management to inform the North American Waterfowl Management Plan is a valuable but challenging goal for the future success of waterfowl management. Increasing engagement with key stakeholder groups will lead to more support and effective waterfowl management. Social systems are complex because...
Authors
Nicholas W. Cole, David C. Fulton
Bedrock fracture characterization of the New Hampshire State Route 111 bypass, Windham, New Hampshire Bedrock fracture characterization of the New Hampshire State Route 111 bypass, Windham, New Hampshire
Bedrock roadcuts developed with blasting along the New Hampshire State Route 111 bypass in Windham expose the metasedimentary Silurian Berwick Formation and intrusions of multiple phases of foliated to nonfoliated granite to granitic pegmatite of the Devonian New Hampshire Plutonic Suite. Fracture characterization at two roadway rock cuts (roadcuts) included measurement of fractures over...
Authors
Gregory J. Walsh, Nicholas Edwin Powell