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: 84793
Comparison of regression relations of bankfull discharge and channel geometry for the glaciated and nonglaciated settings of Pennsylvania and southern New York Comparison of regression relations of bankfull discharge and channel geometry for the glaciated and nonglaciated settings of Pennsylvania and southern New York
Streambank erosion in areas of past glacial deposition has been shown to be a dominant source of sediment to streams. Water resource managers are faced with the challenge of developing long and short term (emergency) stream restoration efforts that rely on the most suitable channel geometry for project design. A geomorphic dataset of new (2016, n=5) and previous (1999–2006, n=96)...
Authors
John W. Clune, Jeffrey J. Chaplin, Kirk E. White
Comparison of U.S. Geological Survey and Bureau of Reclamation water-use reporting in the Colorado River Basin Comparison of U.S. Geological Survey and Bureau of Reclamation water-use reporting in the Colorado River Basin
The use of water in the United States is arguably one of the most important factors determining water availability at any specific place and time. Numerous local, State, and Federal entities develop, compile, and report water-use data, which can lead to confusing or conflicting information. This report was authored jointly by the U.S. Geological Survey (USGS) and Bureau of Reclamation...
Authors
Breton Bruce, James Prairie, Molly A. Maupin, Jeremy Dodds, David Eckhardt, Tamara I. Ivahnenko, Paul Matuska, Eric Evenson, Alan Harrison
DOI/GTN-P climate and active-layer data acquired in the National Petroleum Reserve-Alaska and the Arctic National Wildlife Refuge, 1998-2019 DOI/GTN-P climate and active-layer data acquired in the National Petroleum Reserve-Alaska and the Arctic National Wildlife Refuge, 1998-2019
This report provides data collected by the climate monitoring array of the U.S. Department of the Interior on Federal lands in Arctic Alaska over the period August 1998 to July 2019; this array is part of the Global Terrestrial Network for Permafrost (DOI/GTN-P). In addition to presenting data, this report also describes monitoring, data collection, and quality-control methods. The array...
Authors
Frank E. Urban, Gary D. Clow
Drain tiles and groundwater resources: Understanding the relations Drain tiles and groundwater resources: Understanding the relations
Executive Summary Drainage for agricultural production over the past 150 years has been an integral component of human-driven change to Minnesota’s rural landscapes. Benefits of drainage Historically, poorly drained soils across much of the State would often remain saturated or flooded after spring snowmelt, preventing timely farm operations such as tilling and planting crops (Arneman...
Authors
Erik A. Smith, Timothy Gillette, Kristen Blann, Mary Coburn, Bryce Hoppie, Suzanne Rhees
Ecosystems, Ecosystem Services, and Biodiversity Ecosystems, Ecosystem Services, and Biodiversity
Biodiversity—the variety of life on Earth—provides vital services that support and improve human health and well-being. Ecosystems, which are composed of living things that interact with the physical environment, provide numerous essential benefits to people. These benefits, termed ecosystem services, encompass four primary functions: provisioning materials, such as food and fiber...
Authors
Douglas Lipton, Madeleine A. Rubenstein, Sarah R. Weiskopf, Shawn L. Carter, Jay Peterson, Lisa Crozier, Michael Fogarty, Sarah Gaichas, Kimberly J. W. Hyde, Toni Lyn Morelli, Jeffrey Morisette, Hassan Moustahfid, Roldan Munoz, Rajendra Poudel, Michelle D. Staudinger, Charles Stock, Laura Thompson, Robin S. Waples, Jake Weltzin
Elk research efforts Elk research efforts
Presented the history of the NC elk herd and summarized early research to determine the population dispersal and mortality rates, assess habitat use, and evaluate elk’s impact on the national park to estimate the probability of success in establishing a permanent elk population in the Great Smoky Mountains National Park (GSMNP). Gave an overview of a fiveyear elk population study...
Authors
Joseph D. Clark
Evaluation of the Source and Transport of High Nitrate Concentrations in Ground Water, Warren Subbasin, California Evaluation of the Source and Transport of High Nitrate Concentrations in Ground Water, Warren Subbasin, California
Ground water historically has been the sole source of water supply for the Town of Yucca Valley in the Warren subbasin of the Morongo ground-water basin, California. An imbalance between ground-water recharge and pumpage caused ground-water levels in the subbasin to decline by as much as 300 feet from the late 1940s through 1994. In response, the local water district, Hi-Desert Water...
Authors
Tracy Nishikawa, Jill N. Densmore, Peter Martin, Jonathan C. Matti
Fatality estimator user’s guide Fatality estimator user’s guide
This publication is the User's Guide for software developed to estimate wildlife fatalities at wind-power facilities, although the software is applicable to a variety of circumstances in which the objective is to estimate the size of a superpopulation and the probability of detection of the individuals is less than one. Simple counts of carcasses do not accurately reflect fatality and do...
Authors
Manuela M. Huso, Nicholas Som, Lew Ladd
Geospatial data for developing nutrient SPARROW models for the Midcontinental region of Canada and the United States Geospatial data for developing nutrient SPARROW models for the Midcontinental region of Canada and the United States
Through the International Watersheds Initiative of the International Joint Commission (IJC), the SpatiallyReferenced Regressions on Watershed attributes (SPARROW) model developed by the U.S. Geological Survey (USGS) is being applied to the Great Lakes, Rainy River – Lake of the Woods and Red-Assiniboine basins. The objective of this binational application of the SPARROW model is to...
Authors
Ivana Vouk, Richard S. Burcher, Craig M. Johnston, R. Wayne Jenkinson, David A. Saad, John S. Gaiot, Glenn A. Benoy, Dale M. Robertson, Michael Laitta
Grasslands Grasslands
Key findings:Total grassland carbon stocks in the conterminous United States, estimated to be about 7.4 petagrams of carbon (Pg C) in 2005, are projected to increase to about 8.2 Pg C by 2050. Although U.S. grasslands are expected to remain carbon sinks over this period, the uptake rate is projected to decline by about half. In the U.S. Great Plains, land-use and land-cover changes are...
Authors
Elise Pendall, Dominique Bachelet, Richard T. Conant, Bassil El Masri, Lawrence B. Flanagan, Alan K. Knapp, Jinxun Liu, Shuguang Liu, Sean M. Schaeffer
Guidelines for determining flood flow frequency — Bulletin 17C Guidelines for determining flood flow frequency — Bulletin 17C
Accurate estimates of flood frequency and magnitude are a key component of any effective nationwide flood risk management and flood damage abatement program. In addition to accuracy, methods for estimating flood risk must be uniformly and consistently applied because management of the Nation’s water and related land resources is a collaborative effort involving multiple actors including...
Authors
John F. England, Timothy A. Cohn, Beth A. Faber, Jery R. Stedinger, Wilbert O. Thomas, Andrea G. Veilleux, Julie E. Kiang, Robert R. Mason,
Habitat Needs Assessment‐II for the Upper Mississippi River Restoration Program: Linking science to management perspectives Habitat Needs Assessment‐II for the Upper Mississippi River Restoration Program: Linking science to management perspectives
The Upper Mississippi River Restoration (UMRR) Program vision statement is for a healthier and more resilient Upper Mississippi River ecosystem that sustains the river’s multiple uses. To address this vision, the UMRR Program recently developed a suite of 12 indicators that quantify aspects of ecosystem health and resilience (i.e., connectivity, redundancy and diversity, and controlling...
Authors
Kat McCain, Sara Schmuecker, Nathan R. De Jager