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
Contaminant baselines and sediment provenance along the Puget Sound Energy Transport Corridor, 2015 Contaminant baselines and sediment provenance along the Puget Sound Energy Transport Corridor, 2015
The transport of coal and oil can result in contaminated soil, water, and organisms from unintended releases. Trains carrying coal and crude oil regularly pass through Puget Sound, Washington, and an increase in the number of coal and oil trains is expected in the future. This study characterized levels of potentially toxic contaminants in sediment in September 2015: arsenic, metals, and
Authors
Renee K. Takesue, Pamela L. Campbell
Assessment of continuous gas resources in the Montney and Doig Formations, Alberta Basin Province, Canada, 2018 Assessment of continuous gas resources in the Montney and Doig Formations, Alberta Basin Province, Canada, 2018
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 47.6 trillion cubic feet of gas and 2.2 billion barrels of natural gas liquids in the Montney and Doig Formations of the Alberta Basin Province in Canada.
Authors
Christopher J. Schenk, Tracey J. Mercier, Marilyn E. Tennyson, Thomas M. Finn, Cheryl A. Woodall, Phuong A. Le, Michael E. Brownfield, Kristen R. Marra, Heidi M. Leathers-Miller
A preliminary report of ongoing research of the ecology of Black-capped Petrel (Pterodroma hasitata) in Sierra de Bahoruco, Dominican Republic – I: GPS tracking of breeding adults A preliminary report of ongoing research of the ecology of Black-capped Petrel (Pterodroma hasitata) in Sierra de Bahoruco, Dominican Republic – I: GPS tracking of breeding adults
The Black-capped Petrel (also known regionally as Diablotin) is a gadfly petrel endemic to the Caribbean. Population estimates based on at-sea observations range from 2,000 to 4,000 individuals, with a fragmented breeding population estimated at 500 to 1,000 pairs. At sea, the expansive marine range of the species exposes it to many conservation threats including fisheries activity...
Authors
Yvan G. Satge, Ernst Rupp, Patrick G.R. Jodice
Natural resource management decision-making under climate uncertainty: Building social-ecological resilience in southwestern Colorado Natural resource management decision-making under climate uncertainty: Building social-ecological resilience in southwestern Colorado
The goal of this project was to facilitate climate change adaptation that contributes to social-ecological resilience, ecosystem and species conservation, and sustainable human communities in southwestern Colorado. The team developed and piloted integrated adaptation planning tools and principles that merge the strengths of the iterative scenario process, the Adaptation for Conservation...
Authors
Nina Burkardt, Marcie Bidwell, Katherine Clifford, Betsy Neely, Patricia Orth, Imtiaz Rangwala, Renee Rondeau, Carina Wyborn, Laurie Yung
Economic Impacts of Restoration in National Parks Economic Impacts of Restoration in National Parks
The National Park Service’s (NPS) Resource Protection Branch (RPB) works with parks under the authority of the System Unit Resource Protection Act (SURPA) and the Oil Pollution Act, among others, to conduct damage assessment and restoration activities for NPS resources that have been injured. Funds used for restoration support jobs in local economies across the Nation. This report...
Authors
Catherine Cullinane Thomas, Noah Van Gilder, Mark VanMouwerik
Guadalupe Bass flow-ecology relationships; with emphasis on the impact of flow on recruitment Guadalupe Bass flow-ecology relationships; with emphasis on the impact of flow on recruitment
Guadalupe Bass Micropterus treculii is an economically and ecologically important black bass species endemic to the Edwards Plateau ecoregion and the lower portions of the Colorado River in central Texas. It is considered a fluvial specialist and as such, there are concerns that the increasing demands being placed upon the water resources of central Texas by growing human populations...
Authors
Timothy B. Grabowski, Heather M. Williams, Robin Verble, Allison Pease, Jessica Pease
USGS geospatial support for unified fishing method USGS geospatial support for unified fishing method
No abstract available.
Authors
Kevin D. Hop, Andrew C. Strassman, Jonathan M. Vallazza, Brent C. Knights
Living with wildfire in Archeluta County, Colorado: 2015 data report Living with wildfire in Archeluta County, Colorado: 2015 data report
Residents in the wildland-urban interface (WUI) can play an important role in reducing wildfire’s negative effects by performing wildfire risk mitigation on their property. This report offers insight into the wildfire risk mitigation activities and related considerations, such as attitudes, experiences, and concern about wildfire, for people with homes in the Pagosa Fire Protection...
Authors
James R. Meldrum, Hannah Brenkert-Smith, Pamela Wilson, Patricia A. Champ, Christopher M. Barth, Angela Boag
Living with wildfire in La Plata County, Colorado: 2015 data report Living with wildfire in La Plata County, Colorado: 2015 data report
Residents in the wildland-urban interface (WUI) can play an important role in reducing wildfire’s negative effects by performing wildfire risk mitigation on their property. This report offers insight into the wildfire risk mitigation activities and related considerations, such as attitudes, experiences, and concern about wildfire, for people with homes in select communities in La Plata...
Authors
Hannah Brenkert-Smith, James R. Meldrum, Pamela Wilson, Patricia A. Champ, Christopher M. Barth, Angela Boag
Why strategic bird monitoring plan for the Gulf of Mexico? Why strategic bird monitoring plan for the Gulf of Mexico?
No abstract available.
Authors
R. Randy Wilson, Mark S. Woodrey, Auriel M. V. Fournier, Jeff Gleason, James E. Lyons
Population and habitat analyses for greater sage-grouse (Centrocercus urophasianus) in the bi-state distinct population segment—2018 update Population and habitat analyses for greater sage-grouse (Centrocercus urophasianus) in the bi-state distinct population segment—2018 update
Executive Summary The Bi-State Distinct Population Segment (Bi-State DPS) of greater sage-grouse (Centrocercus urophasianus, hereinafter “sage-grouse”) represents a genetically distinct and geographically isolated population that straddles the border between Nevada and California. The primary threat to these sage-grouse populations is the expansion of single-leaf pinyon (Pinus monophylla...
Authors
Peter S. Coates, Mark A. Ricca, Brian G. Prochazka, Shawn T. O’Neil, John P. Severson, Steven R. Mathews, Shawn Espinosa, Scott Gardner, Sherri Lisius, David J. Delehanty
2017 Status of the Lake Ontario Lower Trophic Levels 2017 Status of the Lake Ontario Lower Trophic Levels
Significant Findings for Year 2017: 1) Offshore spring total phosphorus (TP) in 2017 was 4.4 µg/L; values remained stable since 2001. Offshore soluble reactive phosphorus (SRP) remained low (1.1 µg/L) in 2017; Apr/May – Oct mean values have been stable in nearshore and offshore habitats since 1998 (range, 0.4 – 3.3 µg/L). Apr/May – Oct mean TP concentrations were low at both nearshore...
Authors
Kristen T. Holeck, Lars G. Rudstam, Christopher Hotaling, Russ D. McCullough, Dave Lemon, Web Pearsall, Jana Lantry, Mike Connerton, Chris Legard, Steve LaPan, Zy Biesinger, Brian F. Lantry, Brian Weidel