Reports
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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.
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Flood-inundation maps and wetland restoration suitability index for the Blue River and selected tributaries, Kansas City, Missouri, and vicinity, 2012 Flood-inundation maps and wetland restoration suitability index for the Blue River and selected tributaries, Kansas City, Missouri, and vicinity, 2012
Digital flood-inundation maps for a 39.7-mile reach of the Blue River and selected tributaries (Brush Creek, Indian Creek, and Dyke Branch) at Kansas City, Missouri, and vicinity, were created by the U.S. Geological Survey (USGS) in cooperation with the City of Kansas City, Missouri. The flood-inundation maps, accessed through the USGS Flood-Inundation Mapping Science Web site at http:/...
Authors
David C. Heimann, Brian P. Kelly, Seth E. Studley
Geological sampling data and benthic biota classification: Buzzards Bay and Vineyard Sound, Massachusetts Geological sampling data and benthic biota classification: Buzzards Bay and Vineyard Sound, Massachusetts
Sea-floor sample collection is an important component of a statewide cooperative mapping effort between the U.S. Geological Survey (USGS) and the Massachusetts Office of Coastal Zone Management (CZM). Sediment grab samples, bottom photographs, and video transects were collected within Vineyard Sound and Buzzards Bay in 2010 aboard the research vesselConnecticut. This report contains...
Authors
Seth D. Ackerman, Adrienne L. Pappal, Emily C. Huntley, Dann S. Blackwood, William C. Schwab
Shallow geology, sea-floor texture, and physiographic zones of Buzzards Bay, Massachusetts Shallow geology, sea-floor texture, and physiographic zones of Buzzards Bay, Massachusetts
Geologic, sediment texture, and physiographic zone maps characterize the sea floor of Buzzards Bay, Massachusetts. These maps were derived from interpretations of seismic-reflection profiles, high-resolution bathymetry, acoustic-backscatter intensity, bottom photographs, and surficial sediment samples. The interpretation of the seismic stratigraphy and mapping of glacial and Holocene...
Authors
David S. Foster, Wayne E. Baldwin, Walter A. Barnhardt, William C. Schwab, Seth D. Ackerman, Brian D. Andrews, Elizabeth A. Pendleton
Wintering movements and habitat use of Surf Scoter (Melanitta perspicillata) in the mid-Atlantic U.S. Wintering movements and habitat use of Surf Scoter (Melanitta perspicillata) in the mid-Atlantic U.S.
Wintering habitat use and migratory pathways are key issues facing sea ducks in the mid-Atlantic U.S. and elsewhere due to the potential for offshore wind energy development. A comprehensive understanding of important winter habitats and environmental characteristics determining sea duck abundance and distribution is paramount in advising marine spatial planning efforts in the region and
Authors
Dustin Meattey, Lucas Savoy, Andrew Gilbert, Jeffrey Tash, Carrie E. Gray, Alicia Berlin, Christine Lepage, Scott Gilliland, Timothy D. Bowman, Jason Osenkowsi, Caleb Spiegel
Yellowstone grizzly bear investigations — Annual report of the Interagency Grizzly Bear Study Team 2014 Yellowstone grizzly bear investigations — Annual report of the Interagency Grizzly Bear Study Team 2014
This Annual Report summarizes results of grizzly bear (Ursus arctos) monitoring and research conducted in the Greater Yellowstone Ecosystem (GYE) by the Interagency Grizzly Bear Study Team (IGBST) during 2014. The report also contains a summary of grizzly bear management actions to address conflict situations.
2013 Monitoring and tracking wet nitrogen deposition at Rocky Mountain National Park 2013 Monitoring and tracking wet nitrogen deposition at Rocky Mountain National Park
In 2004, multiple agencies including the Colorado Department of Public Health and Environment (CDPHE), the National Park Service (NPS), and the U.S. Environmental Protection Agency (U.S. EPA) met to address the effects and trends of nitrogen deposition and related air quality issues at Rocky Mountain National Park (RMNP). These agencies signed a Memorandum of Understanding (MOU) to...
Authors
Kristi Morris, M. Alisa Mast, David W. Clow, Gregory A. Wetherbee, Jill Baron, Curt Taipale, Tamara Blett, David A. Gay, Daniel Bowker
2014 National Park visitor spending effects: economic contributions to local communities, states, and the nation 2014 National Park visitor spending effects: economic contributions to local communities, states, and the nation
The National Park System covers more than 84 million acres and is comprised of more than 401 sites across the Nation. These lands managed by the National Park Service (NPS) serve as recreational destinations for visitors from across the Nation and around the world. On vacations or on day trips, NPS visitors spend time and money in the gateway communities surrounding NPS sites. Spending...
Authors
Catherine Cullinane Thomas, Christopher Huber, Lynne Koontz
2014 status of the Lake Ontario lower trophic levels 2014 status of the Lake Ontario lower trophic levels
Soluble reactive phosphorus (SRP) concentrations have been stable in nearshore and offshore habitats since 1998 (0.4 – 3.3 μg/L). SRP concentrations were low in 2014; Apr/May – Oct mean values were
Authors
Kristen T. Holeck, Lars G. Rudstam, Christopher Hotaling, Russ D. McCullough, Dave Lemon, Web Pearsall, Jana Lantry, Michael J. Connerton, Steve LaPan, Zy Biesinger, Brian F. Lantry, Maureen Walsh, Brian Weidel
2014-2015 Partnership accomplishments report on joint activities: National Gap Analysis Program and LANDFIRE 2014-2015 Partnership accomplishments report on joint activities: National Gap Analysis Program and LANDFIRE
The intended target audience for this document initially is management and project technical specialist and scientists involved in the Gap Analysis Program (GAP) and the Landscape Fire and Resource Management Planning Tools - (LANDFIRE) program to help communicate coordination activities to all involved parties. This document is also intended to give background information in other parts...
Authors
Anne Davidson, Alexa McKerrow, Don Long, Todd Earnhardt
A guide to the use of distance sampling to estimate abundance of Karner blue butterflies A guide to the use of distance sampling to estimate abundance of Karner blue butterflies
This guide is intended to describe the use of distance sampling as a method for evaluating the abundance of Karner blue butterflies at a location. Other methods for evaluating abundance exist, including mark-release-recapture and index counts derived from Pollard-Yates surveys, for example. Although this guide is not intended to be a detailed comparison of the pros and cons of each type...
Authors
Ralph Grundel
Accuracy assessment/validation methodology and results of 2010–11 land-cover/land-use data for Pools 13, 26, La Grange, and Open River South, Upper Mississippi River System Accuracy assessment/validation methodology and results of 2010–11 land-cover/land-use data for Pools 13, 26, La Grange, and Open River South, Upper Mississippi River System
Introduction/Background The U.S. Geological Survey (USGS)-Upper Midwest Environmental Sciences Center (UMESC) was responsible for development of several land cover/land use (LCU) systemic datasets of the Upper Mississippi River System (UMRS). These efforts (1989 and 2000) were funded by the U.S. Army Corps of Engineers’ Upper Mississippi River Restoration Program (UMRR) Long Term...
Authors
J.W. Jakusz, J.J. Dieck, H.A. Langrehr, J.J. Ruhser, S.J. Lubinski
Acidic deposition along the Appalachian Trail corridor and its effects on acid-sensitive terrestrial and aquatic resources Acidic deposition along the Appalachian Trail corridor and its effects on acid-sensitive terrestrial and aquatic resources
The Appalachian National Scenic Trail (AT), a unit of the National Park Service (NPS), spans nearly 2,200 miles from Georgia to Maine, encompassing a diverse range of ecosystems. Acidic deposition (acid rain) threatens the AT’s natural resources. Acid rain is a result of sulfur (S) and nitrogen (N) compounds produced from fossil fuel combustion, motor vehicles, and agricultural practices...
Authors
Gregory B. Lawrence, Timothy J. Sullivan, Douglas A. Burns, Scott W. Bailey, Bernard J. Cosby, Martin Dovciak, Holly A. Ewing, Todd C. McDonnell, Rakesh Minocha, Rachel Riemann, Juliana Quant, Karen C. Rice, Jason Siemion, Kathleen C. Weathers