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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Assessment of interim flow water-quality data of the San Joaquin River restoration program and implications for fishes, California, 2009-11 Assessment of interim flow water-quality data of the San Joaquin River restoration program and implications for fishes, California, 2009-11
After more than 50 years of extensive water diversion for urban and agriculture use, a major settlement was reached among the U.S. Departments of the Interior and Commerce, the Natural Resources Defense Council, and the Friant Water Users Authority in an effort to restore the San Joaquin River. The settlement received Federal court approval in October 2006 and established the San Joaquin...
Authors
Marissa L. Wulff, Larry R. Brown
Geochemical reanalysis of historical U.S. Geological Survey sediment samples from the Inmachuk, Kugruk, Kiwalik, and Koyuk River drainages, Granite Mountain, and the northern Darby Mountains, Bendeleben, Candle, Kotzebue, and Solomon quadrangles, Alaska Geochemical reanalysis of historical U.S. Geological Survey sediment samples from the Inmachuk, Kugruk, Kiwalik, and Koyuk River drainages, Granite Mountain, and the northern Darby Mountains, Bendeleben, Candle, Kotzebue, and Solomon quadrangles, Alaska
The State of Alaska’s Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), is designed to evaluate Alaska’s statewide potential for SCM resources. The SCM Assessment is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data...
Authors
Melanie B. Werdon, Matthew Granitto, Jaime S. Azain
Hydrologic influences on water-level changes in the Eastern Snake River Plain aquifer at and near the Idaho National Laboratory, Idaho, 1949-2014 Hydrologic influences on water-level changes in the Eastern Snake River Plain aquifer at and near the Idaho National Laboratory, Idaho, 1949-2014
The U.S. Geological Survey, in cooperation with the U.S. Department of Energy, has maintained a water-level monitoring program at the Idaho National Laboratory (INL) since 1949 to systematically measure water levels to provide long-term information on groundwater recharge, discharge, movement, and storage in the eastern Snake River Plain (ESRP) aquifer. During 2014, water levels in the...
Authors
Roy C. Bartholomay, Brian V. Twining
Marine geophysical data collected in a shallow back-barrier estuary, Barnegat Bay, New Jersey Marine geophysical data collected in a shallow back-barrier estuary, Barnegat Bay, New Jersey
In 2011, the U.S. Geological Survey, in cooperation with the New Jersey Department of Environmental Protection, began a multidisciplinary research project to better understand the water quality in Barnegat Bay, New Jersey. This back-barrier estuary is experiencing degraded water quality, algal blooms, loss of seagrass, and increases in oxygen stress, macroalgae, stinging nettles, and...
Authors
Brian D. Andrews, Jennifer L. Miselis, William W. Danforth, Barry J. Irwin, Charles R. Worley, Emile M. Bergeron, Dann S. Blackwood
Geochemical reanalysis of historical U.S. Geological Survey sediment samples from the Kougarok area, Bendeleben and Teller quadrangles, Seward Peninsula, Alaska Geochemical reanalysis of historical U.S. Geological Survey sediment samples from the Kougarok area, Bendeleben and Teller quadrangles, Seward Peninsula, Alaska
The State of Alaska’s Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), is designed to evaluate Alaska’s statewide potential for SCM resources. The SCM Assessment is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data...
Authors
Melanie B. Werdon, Matthew Granitto, Jaime S. Azain
Geochemical reanalysis of historical U.S. Geological Survey sediment samples from the Haines area, Juneau and Skagway quadrangles, southeast Alaska Geochemical reanalysis of historical U.S. Geological Survey sediment samples from the Haines area, Juneau and Skagway quadrangles, southeast Alaska
The State of Alaska’s Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), is designed to evaluate Alaska’s statewide potential for SCM resources. The SCM Assessment is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data...
Authors
Melanie B. Werdon, Matthew Granitto, Jaime S. Azain
EROS resources for the classroom EROS resources for the classroom
The U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center has several educational resources that demonstrate how satellite imagery is used to understand our changing world.
Authors
Water Resources Division U.S. Geological Survey
Geology and assessment of unconventional oil and gas resources of northeastern Mexico Geology and assessment of unconventional oil and gas resources of northeastern Mexico
The U.S. Geological Survey, in cooperation with the U.S. Department of State, quantitatively assessed the potential for unconventional oil and gas resources within the onshore portions of the Tampico-Misantla Basin, Burgos Basin, and Sabinas Basin provinces of northeastern Mexico. Unconventional resources of the Veracruz Basin were not quantitatively assessed because of a current lack of...
Authors
Oil-particle interactions and submergence from crude oil spills in marine and freshwater environments: review of the science and future research needs Oil-particle interactions and submergence from crude oil spills in marine and freshwater environments: review of the science and future research needs
Oil-particle interactions and oil submergence are of much interest to oil spill responders and scientists, especially as transportation of light and heavy crude oils increases in North America’s coastal marine and freshwater environments. This report contains an up-to-date review of the state of the science for oil-particle aggregates (OPAs), in terms of their formation and stability...
Authors
Faith A. Fitzpatrick, Michael C. Boufadel, Rex Johnson, Kenneth W. Lee, Thomas P. Graan, Adriana C. Bejarano, Zhenduo Zhu, David Waterman, Daniel M. Capone, Earl Hayter, Stephen K. Hamilton, Timothy Dekker, Marcelo H. Garcia, Jacob S. Hassan
Assessment of statewide annual streamflow in New Mexico, 1985-2013 Assessment of statewide annual streamflow in New Mexico, 1985-2013
In 2014, the New Mexico Water Resources Research Institute began a statewide assessment of the water resources of New Mexico. The U.S. Geological Survey, in cooperation with the New Mexico Water Resources Research Institute, addressed the streamflow component of the assessment by examining streamgage data for major river basins and streams in New Mexico for the study period over water...
Authors
Joseph Anthony Affinati, Nathan C. Myers
Hydrogeochemical exploration: a reconnaissance study on northeastern Seward Peninsula, Alaska Hydrogeochemical exploration: a reconnaissance study on northeastern Seward Peninsula, Alaska
A reconnaissance hydrogeochemical study employing high-resolution/high-sensitivity inductively coupled plasma mass spectrometry analysis of stream and seep water samples (n= 171) was conducted in an area of limited bedrock exposure on the northeastern Seward Peninsula, Alaska. Sampling was focused in drainages around four main areas—at the Anugi Pb-Zn-Ag occurrence and in streams...
Authors
Garth E. Graham, Ryan D. Taylor, Steve Buckley
Biological responses to climate impacts with a focus on Regional Species of Greatest Conservation Need (RSGCN) Biological responses to climate impacts with a focus on Regional Species of Greatest Conservation Need (RSGCN)
This chapter reviews the responses to climate change on the 367 Regional Species of Greatest Conservation Need (RSGCN) identified by the Northeast Fish and Wildlife Diversity Technical Committee (NEFWDTC), technical experts from states’ natural resource agencies (Appendix 3.1). These species were chosen based on their conservation status, listing in SWAPs, and the percentage of their...
Authors
Toni L. Morelli, William DeLuca, Colton Ellison, Stephen F. Jane, Stephen Matthews