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: 85088
Simulation of groundwater storage changes in the eastern Pasco Basin, Washington Simulation of groundwater storage changes in the eastern Pasco Basin, Washington
The Miocene Columbia River Basalt Group and younger sedimentary deposits of lacustrine, fluvial, eolian, and cataclysmic-flood origins compose the aquifer system of the Pasco Basin in eastern Washington. Irrigation return flow and canal leakage from the Columbia Basin Project have caused groundwater levels to rise substantially in some areas, contributing to landslides along the Columbia...
Authors
Charles E. Heywood, Sue C. Kahle, Theresa D. Olsen, James D. Patterson, Erick Burns
Design and testing of a process-based groundwater vulnerability assessment (P-GWAVA) system for predicting concentrations of agrichemicals in groundwater across the United States Design and testing of a process-based groundwater vulnerability assessment (P-GWAVA) system for predicting concentrations of agrichemicals in groundwater across the United States
Efforts to assess the likelihood of groundwater contamination from surface-derived compounds have spanned more than three decades. Relatively few of these assessments, however, have involved the use of process-based simulations of contaminant transport and fate in the subsurface, or compared the predictions from such models with measured data—especially over regional to national scales...
Authors
Jack E Barbash, Frank D. Voss
Archive of Digital Chirp Subbottom Profile Data Collected During USGS Cruise 14BIM05 Offshore of Breton Island, Louisiana, August 2014 Archive of Digital Chirp Subbottom Profile Data Collected During USGS Cruise 14BIM05 Offshore of Breton Island, Louisiana, August 2014
From August 11 to 31, 2014, the U.S. Geological Survey (USGS), in cooperation with the U.S. Fish and Wildlife Service (USFWS), conducted a geophysical survey to investigate the geologic controls on barrier island framework and long-term sediment transport offshore of Breton Island, Louisiana as part of a broader USGS study on Barrier Island Mapping (BIM). Additional details related to...
Authors
Arnell S. Forde, James G. Flocks, Dana S. Wiese, Jake J. Fredericks
Nitrogen loads from selected rivers in the Long Island Sound Basin, 2005–13, Connecticut and Massachusetts Nitrogen loads from selected rivers in the Long Island Sound Basin, 2005–13, Connecticut and Massachusetts
Total nitrogen loads at 14 water-quality monitoring stations were calculated by using discrete measurements of total nitrogen and continuous streamflow data for the period 2005–13 (water years 2006–13). Total nitrogen loads were calculated by using the LOADEST computer program. Overall, for water years 2006–13, streamflow in Connecticut was generally above normal. Total nitrogen yields...
Authors
John R. Mullaney
Earth as art 4 Earth as art 4
Landsat 8 is the latest addition to the long-running series of Earth-observing satellites in the Landsat program that began in 1972. The images featured in this fourth installment of the Earth As Art collection were all acquired by Landsat 8. They show our planet’s diverse landscapes with remarkable clarity. Landsat satellites see the Earth as no human can. Not only do they acquire...
Authors
Earth as art 4 bookmark Earth as art 4 bookmark
Images from Landsat 8, launched in 2013, already stand out as stellar additions to our popular Earth As Art series. We are proud to present the fourth collection—Earth As Art 4!
Authors
2016 one-year seismic hazard forecast for the Central and Eastern United States from induced and natural earthquakes 2016 one-year seismic hazard forecast for the Central and Eastern United States from induced and natural earthquakes
The U.S. Geological Survey (USGS) has produced a 1-year seismic hazard forecast for 2016 for the Central and Eastern United States (CEUS) that includes contributions from both induced and natural earthquakes. The model assumes that earthquake rates calculated from several different time windows will remain relatively stationary and can be used to forecast earthquake hazard and damage...
Authors
Mark D. Petersen, Charles S. Mueller, Morgan P. Moschetti, Susan M. Hoover, Andrea L. Llenos, William L. Ellsworth, Andrew J. Michael, Justin L. Rubinstein, Arthur F. McGarr, Kenneth S. Rukstales
Social-value maps for Arapaho, Roosevelt, Medicine Bow, Routt, and White River National Forests, Colorado and Wyoming Social-value maps for Arapaho, Roosevelt, Medicine Bow, Routt, and White River National Forests, Colorado and Wyoming
Authors
Zachary H. Ancona, Darius J. Semmens, Benson C. Sherrouse
Evaluation of Caspian tern (Hydroprogne caspia) and snowy plover (Charadrius alexandrinus nivosus) nesting on modified islands at the Don Edwards San Francisco Bay National Wildlife Refuge, California—2015 Annual Report Evaluation of Caspian tern (Hydroprogne caspia) and snowy plover (Charadrius alexandrinus nivosus) nesting on modified islands at the Don Edwards San Francisco Bay National Wildlife Refuge, California—2015 Annual Report
Authors
C. Alex Hartman, Joshua T. Ackerman, Mark P. Herzog, Cheryl Strong, David Trachtenbarg, Kimberley A. Sawyer, Crystal A. Shore
California State Waters Map Series — Offshore of Santa Cruz, California California State Waters Map Series — Offshore of Santa Cruz, California
Authors
Guy R. Cochrane, Peter Dartnell, Samuel Y. Johnson, Mercedes D. Erdey, Nadine E. Golden, H. Gary Greene, Bryan E. Dieter, Stephen R. Hartwell, Andrew C. Ritchie, David P. Finlayson, Charles A. Endris, Janet Watt, Clifton W. Davenport, Ray W. Sliter, Katherine L. Maier, Lisa M. Krigsman
California State Waters map series — Offshore of Aptos, California California State Waters map series — Offshore of Aptos, California
Authors
Guy R. Cochrane, Samuel Y. Johnson, Peter Dartnell, H. Gary Greene, Mercedes D. Erdey, Bryan E. Dieter, Nadine E. Golden, Stephen R. Hartwell, Andrew C. Ritchie, Rikk G. Kvitek, Katherine L. Maier, Charles A. Endris, Clifton W. Davenport, Janet Watt, Ray W. Sliter, David P. Finlayson, Lisa M. Krigsman
Climate Change Science Activities of the U.S. Geological Survey in New England Climate Change Science Activities of the U.S. Geological Survey in New England
The U.S. Geological Survey (USGS) has actively pursued research in the effects of climate change on the hydrology of New England. Ongoing focus areas of climate change science activities of the USGS in New England include the following: • Hydrologic climate-response data (initiating or expanding long-term hydrologic climate-response data collection networks to detect and monitor climate...
Authors
Robert M. Lent