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: 84719
Identification of bacteria in groundwater used for domestic supply in the southeast San Joaquin Valley, California, 2014 Identification of bacteria in groundwater used for domestic supply in the southeast San Joaquin Valley, California, 2014
Groundwater is an important source of drinking water in California. Water-borne diseases caused by microbial contamination are a growing concern. The MI test, a membrane filtration method for the chromogenic/fluorogenic detection of total coliforms and Escherichia coli, was used for samples collected January to April 2014 from 42 domestic wells in the southeastern San Joaquin Valley. The...
Authors
Carmen A. Burton, Christine J. Lawrence
Sea-level rise vulnerability of mangrove forests on the Micronesian Island of Pohnpei Sea-level rise vulnerability of mangrove forests on the Micronesian Island of Pohnpei
Introduction The mangrove forests across the Federated States of Micronesia provide critical resources and contribute to climate resilience. Locally, mangrove forests provide habitat for fish and wildlife, timber, and other cultural resources. Mangrove forests also protect Micronesian communities from tropical cyclones and tsunamis, providing a buffer against powerful waves and winds...
Authors
Karen M. Thorne, Kevin Buffington
Survey of fish assemblages in the upper Neversink River and upper Rondout Creek, New York, 2017–19 Survey of fish assemblages in the upper Neversink River and upper Rondout Creek, New York, 2017–19
Streams in the Catskill Mountains region of New York provide many important ecological and economic services, including recreational angling and serving as a drinking water supply to New York City. Many streams in this region were adversely affected by acid deposition during the late 20th century, impairing water quality and aquatic ecosystems. More recently, the level of acid deposition...
Authors
Dylan R. Winterhalter, Scott D. George, Barry P. Baldigo
The North American Breeding Bird Survey in Mexico, 2008 to 2018—A status report The North American Breeding Bird Survey in Mexico, 2008 to 2018—A status report
Collection of avian population data has repeatedly been identified as a high priority for bird conservation in Mexico. To meet this need, in 2008 the North American Breeding Bird Survey (BBS), a volunteer-based survey, was expanded to include northern Mexico. The BBS in Mexico (Mexican BBS) is managed by the North American Bird Conservation Initiative (NABCI), Mexico’s National...
Authors
Water Resources Division U.S. Geological Survey
U.S. Geological Survey landscape science strategy 2020–2030 U.S. Geological Survey landscape science strategy 2020–2030
Across our Nation, multiple Federal, State, Tribal, and local governments are working with stakeholders and landowners to restore, conserve, and manage lands and resources to benefit fish, wildlife, and people. One of the largest Federal efforts is led by the U.S. Department of the Interior (DOI), with multiple DOI agencies working to conserve and manage public lands, resources, and...
Authors
Karen E. Jenni, Sarah K. Carter, Nicholas G. Aumen, Zachary H. Bowen, John B. Bradford, Michael A. Chotkowski, Leslie Hsu, Peter S. Murdoch, Scott W. Phillips, Kevin L. Pope, Rudy Schuster, Melanie J. Steinkamp, Jake Weltzin, George Z. Xian
Bathymetry of New York City’s East of Hudson reservoirs and controlled lakes, 2017 to 2019 Bathymetry of New York City’s East of Hudson reservoirs and controlled lakes, 2017 to 2019
New York City maintains an extensive system of reservoirs and aqueducts to provide drinking water to its residents, including 16 reservoirs and controlled lakes in Westchester and Putnam Counties in southern New York, east of the Hudson River (also called “East of Hudson reservoirs and controlled lakes”). These reservoirs were put into service from 1842 to 1915, and their capacities have...
Authors
Elizabeth A. Nystrom, Courtney J. Huston, Robert J. Welk
Permeable groundwater pathways and tritium migration patterns from the HANDLEY underground nuclear test, Pahute Mesa, Nevada Permeable groundwater pathways and tritium migration patterns from the HANDLEY underground nuclear test, Pahute Mesa, Nevada
The HANDLEY nuclear test was detonated at about 2,700 feet below the water table on March 26, 1970, in Pahute Mesa, south-central Nevada. Measured tritium concentrations in boreholes ER-20-12 and PM-3 indicate that a shallow tritium plume has migrated more than 1 mile (mi) downgradient from the HANDLEY test within a semi-perched aquifer and deeper tritium plumes have migrated 4.5 miles...
Authors
Tracie R. Jackson
South Dakota and Landsat South Dakota and Landsat
Few States derive as much of their social and economic well-being from the land as South Dakota. Agriculture is the State’s primary industry. Hunting, fishing, tourism, mining, and hydroelectric power are also important economic and cultural drivers. Data from the U.S. Geological Survey Landsat program, archived at the U.S. Geological Survey Earth Resources Observation and Science Center...
Authors
California and Landsat California and Landsat
California has remarkable geographic diversity, from 1,100 miles of Pacific shoreline to 33 million acres of trees, including its famous redwood forests along the Pacific Coast Highway, U.S. Route 101. And although California’s nickname is “The Golden State," it may also deserve the title of “The Extreme State.” Mount Whitney, the highest peak in the conterminous United States, stands at...
Authors
Lower Granite Reservoir biological monitoring at 2015 disposal site Lower Granite Reservoir biological monitoring at 2015 disposal site
No abstract available.
Authors
Rulon J Hemingway, Kenneth Tiffan
Surface-mining modeling for USGS coal assessments Surface-mining modeling for USGS coal assessments
The value of national coal deposits is determined for the Solid Fuel Energy Resources Assessment and Research Project through economic evaluations using hypothetical mining models. Deposits near the surface are evaluated with the U.S. Geological Survey (USGS) surface-mining model, which is patterned after the standard mining techniques and infrastructures of commercial mining projects...
Authors
Paul E. Pierce
Decision analysis of barrier placement and targeted removal to control invasive carp in the Tennessee River Basin Decision analysis of barrier placement and targeted removal to control invasive carp in the Tennessee River Basin
Controlling range expansion of invasive carp (specifically Hypophthalmichthys spp.) on the Tennessee River is important to conserve the ecological and economic benefits provided by the river. We collaborated with State and Federal agencies (the stakeholder group) to develop a decision framework and decision support model to evaluate strategies to control carp expansion in the Tennessee...
Authors
Max Post van der Burg, David R. Smith, Aaron R. Cupp, Mark W. Rogers, Duane Chapman