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Reports

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: 84803

Report of the River Master of the Delaware River for the period December 1, 2014–November 30, 2015 Report of the River Master of the Delaware River for the period December 1, 2014–November 30, 2015

Executive Summary A Decree of the Supreme Court of the United States, entered June 7, 1954 (New Jersey v. New York, 347 U.S. 995), established the position of Delaware River Master within the U.S. Geological Survey. In addition, the Decree authorizes the diversion of water from the Delaware River Basin and requires compensating releases from specific reservoirs owned by New York City be...
Authors
Kendra L. Russell, William J. Andrews, Vincent J. DiFrenna, J. Michael Norris, Robert R. Mason,

Assessment and characterization of ephemeral stream channel stability and mechanisms affecting erosion in Grand Valley, western Colorado, 2018–21 Assessment and characterization of ephemeral stream channel stability and mechanisms affecting erosion in Grand Valley, western Colorado, 2018–21

The Grand Valley in western Colorado is in the semiarid Southwest United States. The north side of the Grand Valley has many ungaged ephemeral streams, which are of particular interest because (1) the underlying bedrock geology, Late Cretaceous Mancos Shale, is a sedimentary rock deposit identified as a major salinity contributor to the Colorado River and (2) despite infrequent...
Authors
Joel William Homan

Integrated science for the study of microplastics in the environment—A strategic science vision for the U.S. Geological Survey Integrated science for the study of microplastics in the environment—A strategic science vision for the U.S. Geological Survey

Executive Summary Evidence of the widespread occurrence of microplastics throughout our environment and exposure to humans and other organisms over the past decade has led to questions about the possibility of health hazards and mitigation of exposures. This document discusses nanoplastics as well as microplastics (referred to solely as microplastics); the microplastics have a range from...
Authors
Deborah D. Iwanowicz, Austin K. Baldwin, Larry B. Barber, Vicki S. Blazer, Steven R. Corsi, Joseph W. Duris, Shawn C. Fisher, Michael Focazio, Sarah E. Janssen, Jeramy Roland Jasmann, Dana W. Kolpin, Johanna M. Kraus, Rachael F. Lane, Mari E. Lee, Kristen B. McSwain, Timothy D. Oden, Timothy J. Reilly, Andrew R. Spanjer

Living with wildfire in Stemilt Basin, Chelan County, Washington: 2022 Data report Living with wildfire in Stemilt Basin, Chelan County, Washington: 2022 Data report

Homeowner wildfire risk mitigation and preparedness are important components of community wildfire readiness. This report presents data collected via rapid wildfire risk assessments to describe the parcel-level wildfire risk of properties within the Stemilt basin, Chelan County, Washington study area. The report also describes household survey data collected from homeowners in the study...
Authors
Julia Goolsby, Patricia A. Champ, Suzanne Wittenbrink, Colleen Donovan, Hilary Heard, Hannah Brenkert-Smith, James R. Meldrum, Christopher M. Barth, Carolyn Wagner, Chiara Forrester

Assessing bridges, culverts, and tunnels for bat presence and use Assessing bridges, culverts, and tunnels for bat presence and use

No abstract available.
Authors
Andrea Nichole Schuhmann, Bethany R. Straw, Frank Tousley, Haley Price, Katrina M. Morris, Laci Pattavina, Robin McWilliams, Brian E. Reichert

Land use and dog park associations with Escherichia coli in the Chattahoochee River National Recreation Area watershed Land use and dog park associations with Escherichia coli in the Chattahoochee River National Recreation Area watershed

A recent study in the Chattahoochee River National Recreation Area (CHAT) indicated that dogs were a primary source of fecal contamination in the Chattahoochee River and that at least some of the contamination in the river was coming from locations outside of CHAT. The study herein sought to determine if dog parks in the CHAT watershed were sources of dog fecal contamination in streams...
Authors
A.M. McKee, Ann M. Couch
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