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.
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Hydraulic, water-quality, and temperature performance of three types of permeable pavement under high sediment loading conditions Hydraulic, water-quality, and temperature performance of three types of permeable pavement under high sediment loading conditions
Three permeable pavement surfaces - asphalt (PA), concrete (PC), and interlocking pavers (PIP) - were evaluated side-by-side to measure changes to the infiltrative capacity and water quality of stormwater runoff originating from a conventional asphalt parking lot in Madison, Wisconsin. During the 24-month monitoring period (2014-16), all three permeable pavements resulted in...
Authors
William R. Selbig, Nicolas Buer
A comparison of photograph-interpreted and IfSAR-derived maps of polar bear denning habitat for the 1002 Area of the Arctic National Wildlife Refuge, Alaska A comparison of photograph-interpreted and IfSAR-derived maps of polar bear denning habitat for the 1002 Area of the Arctic National Wildlife Refuge, Alaska
Polar bears (Ursus maritimus) in Alaska use the Arctic National Wildlife Refuge (ANWR) for maternal denning. Pregnant bears den in snow banks for more than 3 months in winter during which they give birth to and nurture young. Denning is one of the most vulnerable times in polar bear life history as the family group cannot simply walk away from a disturbance without jeopardizing survival...
Authors
George M. Durner, Todd C. Atwood
Effects of the proposed California WaterFix North Delta Diversion on survival of juvenile Chinook salmon (Oncorhynchus tshawytscha) in the Sacramento-San Joaquin River Delta, northern California Effects of the proposed California WaterFix North Delta Diversion on survival of juvenile Chinook salmon (Oncorhynchus tshawytscha) in the Sacramento-San Joaquin River Delta, northern California
The California Department of Water Resources and Bureau of Reclamation propose new water intake facilities on the Sacramento River in northern California that would convey some of the water for export to areas south of the Sacramento-San Joaquin River Delta (hereinafter referred to as the Delta) through tunnels rather than through the Delta. The collection of water intakes, tunnels...
Authors
Russell W. Perry, Adam C. Pope
Groundwater-quality data from the eastern Snake River Plain Aquifer, Jerome and Gooding Counties, south-central Idaho, 2017 Groundwater-quality data from the eastern Snake River Plain Aquifer, Jerome and Gooding Counties, south-central Idaho, 2017
Groundwater-quality samples and water-level data were collected from 36 wells in the Jerome/Gooding County area of the eastern Snake River Plain aquifer during June 2017. The wells included 30 wells sampled for the U.S. Geological Survey’s National Water-Quality Assessment project, plus an additional 6 wells were selected to increase spatial distribution. The data provide water managers...
Authors
Kenneth D. Skinner
U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2016 annual report U.S. Geological Survey science for the Wyoming Landscape Conservation Initiative—2016 annual report
This is the ninth annual report highlighting U.S. Geological Survey (USGS) science and decision-support activities conducted for the Wyoming Landscape Conservation Initiative (WLCI). The activities address specific management needs identified by WLCI partner agencies. In fiscal year (FY) 2016, there were 26 active USGS WLCI science-based projects. Of these 26 projects, one project was...
Authors
Zachary H. Bowen, Ellen Aikens, Cameron L. Aldridge, Patrick J. Anderson, Timothy J. Assal, Anna D. Chalfoun, Geneva W. Chong, Cheryl A. Eddy-Miller, Steven L. Garman, Steve Germaine, Collin G. Homer, Aaron N. Johnston, Matthew J. Kauffman, Daniel J. Manier, Cynthia P. Melcher, Kirk A. Miller, Annika W. Walters, Jerrod D. Wheeler, Daniel J. Wieferich, Anna B. Wilson, Teal B. Wyckoff, Linda Zeigenfuss
By
Ecosystems Mission Area, Water Resources Mission Area, Science Synthesis, Analysis, and Research Program, Land Management Research Program, Science Analytics and Synthesis (SAS), Species Management Research Program, Earth Resources Observation and Science (EROS) Center, Fort Collins Science Center, Geology, Geophysics, and Geochemistry Science Center, Northern Rocky Mountain Science Center, Wyoming-Montana Water Science Center
Flood-inundation maps for the Wabash River at Lafayette, Indiana Flood-inundation maps for the Wabash River at Lafayette, Indiana
Digital flood-inundation maps for an approximately 4.8-mile reach of the Wabash River at Lafayette, Indiana (Ind.) were created by the U.S. Geological Survey (USGS) in cooperation with the Indiana Office of Community and Rural Affairs. The inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science web site at https://water.usgs.gov/osw/flood_inundation/...
Authors
Moon H. Kim
Methods for peak-flow frequency analysis and reporting for streamgages in or near Montana based on data through water year 2015 Methods for peak-flow frequency analysis and reporting for streamgages in or near Montana based on data through water year 2015
This report documents the methods for peak-flow frequency (hereinafter “frequency”) analysis and reporting for streamgages in and near Montana following implementation of the Bulletin 17C guidelines. The methods are used to provide estimates of peak-flow quantiles for 50-, 42.9-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance probabilities for selected streamgages operated...
Authors
Steven K. Sando, Peter M. McCarthy
Compilation and analysis of multiple groundwater-quality datasets for Idaho Compilation and analysis of multiple groundwater-quality datasets for Idaho
Groundwater is an important source of drinking and irrigation water throughout Idaho, and groundwater quality is monitored by various Federal, State, and local agencies. The historical, multi-agency records of groundwater quality include a valuable dataset that has yet to be compiled or analyzed on a statewide level. The purpose of this study is to combine groundwater-quality data from...
Authors
Stephen A. Hundt, Candice B. Hopkins
Ecosystems science: Genes to landscapes Ecosystems science: Genes to landscapes
Bountiful fisheries, healthy and resilient wildlife, flourishing forests and vibrant grasslands are coveted resources that benefit all Americans. U.S. Geological Survey (USGS) science supports the conservation and management of the Nation’s fish and wildlife, and the landscapes they inhabit. Our biological resources—ecosystems and the wild things that live in them—are the foundation of...
Authors
Lahar—River of volcanic mud and debris Lahar—River of volcanic mud and debris
Lahar, an Indonesian word for volcanic mudflow, is a mixture of water, mud, and volcanic rock flowing swiftly along a channel draining a volcano. Lahars can form during or after eruptions, or even during periods of inactivity. They are among the greatest threats volcanoes pose to people and property. Lahars can occur with little to no warning, and may travel great distances at high...
Authors
Jon J. Major, Thomas C. Pierson, James W. Vallance
Modeled inundation limits of potential lahars from Mount Adams in the White Salmon River Valley, Washington Modeled inundation limits of potential lahars from Mount Adams in the White Salmon River Valley, Washington
Lahars large enough to reach populated areas are a hazard at Mount Adams, a massive volcano in the southern Cascade Range of Washington State (fig. 1). It is considered to be still active and has the potential to erupt again. By definition, lahars are gravity-driven flows of water-saturated mixtures of mud and rock (plus or minus ice, wood, and other debris), which originate from...
Authors
Julia P. Griswold, Thomas C. Pierson, Joseph A. Bard
Integrating adaptive management and ecosystem services concepts to improve natural resource management: Challenges and opportunities Integrating adaptive management and ecosystem services concepts to improve natural resource management: Challenges and opportunities
Executive Summary—Overview Natural resource managers must make decisions that affect broad-scale ecosystem processes involving large spatial areas, complex biophysical interactions, numerous competing stakeholder interests, and highly uncertain outcomes. Natural and social science information and analyses are widely recognized as important for informing effective management. Chief among...
Authors
Rebecca S. Epanchin-Niell, James W. Boyd, Molly K. Macauley, Lynn Scarlett, Carl D. Shapiro, Byron K. Williams