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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Water-level and recoverable water in storage changes, High Plains aquifer, predevelopment to 2015 and 2013–15 Water-level and recoverable water in storage changes, High Plains aquifer, predevelopment to 2015 and 2013–15
The High Plains aquifer underlies 111.8 million acres (about 175,000 square miles) in parts of eight States—Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. Water-level declines began in parts of the High Plains aquifer soon after the beginning of substantial irrigation with groundwater in the aquifer area (about 1950). This report presents water-level...
Authors
Virginia L. McGuire
Cyanobacteria of the 2016 Lake Okeechobee and Okeechobee Waterway harmful algal bloom Cyanobacteria of the 2016 Lake Okeechobee and Okeechobee Waterway harmful algal bloom
The Lake Okeechobee and the Okeechobee Waterway (Lake Okeechobee, the St. Lucie Canal and River, and the Caloosahatchee River) experienced an extensive harmful algal bloom within Lake Okeechobee, the St. Lucie Canal and River and the Caloosahatchee River in 2016. In addition to the very visible bloom of the cyanobacterium Microcystis aeruginosa, several other cyanobacteria were present...
Authors
Barry H. Rosen, Timothy W. Davis, Christopher J. Gobler, Benjamin J. Kramer, Keith A. Loftin
Hydrogeologic framework and selected components of the groundwater budget for the upper Umatilla River Basin, Oregon Hydrogeologic framework and selected components of the groundwater budget for the upper Umatilla River Basin, Oregon
Authors
Nora B. Herrera, Kate Ely, Smita Mehta, Adam J. Stonewall, John C. Risley, Stephen R. Hinkle, Terrence D. Conlon
Water temperature effects from simulated changes to dam operations and structures in the Middle and South Santiam Rivers, Oregon Water temperature effects from simulated changes to dam operations and structures in the Middle and South Santiam Rivers, Oregon
Green Peter and Foster Dams on the Middle and South Santiam Rivers, Oregon, have altered the annual downstream water temperature profile (cycle). Operation of the dams has resulted in cooler summer releases and warmer autumn releases relative to pre-dam conditions, and that alteration can hinder recovery of various life stages of threatened spring-run Chinook salmon (Oncorhyncus...
Authors
Norman L. Buccola
Assessment of undiscovered oil and gas resources in the Spraberry Formation of the Midland Basin, Permian Basin Province, Texas, 2017 Assessment of undiscovered oil and gas resources in the Spraberry Formation of the Midland Basin, Permian Basin Province, Texas, 2017
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean resources of 4.2 billion barrels of oil and 3.1 trillion cubic feet of gas in the Spraberry Formation of the Midland Basin, Permian Basin Province, Texas.
Authors
Kristen R. Marra, Stephanie B. Gaswirth, Christopher J. Schenk, Heidi M. Leathers-Miller, Timothy R. Klett, Tracey J. Mercier, Phuong A. Le, Marilyn E. Tennyson, Thomas M. Finn, Sarah J. Hawkins, Michael E. Brownfield
Delineation of marsh types and marsh-type change in coastal Louisiana for 2007 and 2013 Delineation of marsh types and marsh-type change in coastal Louisiana for 2007 and 2013
The Bureau of Ocean Energy Management researchers often require detailed information regarding emergent marsh vegetation types (such as fresh, intermediate, brackish, and saline) for modeling habitat capacities and mitigation. In response, the U.S. Geological Survey in cooperation with the Bureau of Ocean Energy Management produced a detailed change classification of emergent marsh...
Authors
Stephen B. Hartley, Brady R. Couvillion, Nicholas M. Enwright
Measuring surface-water loss in Honouliuli Stream near the ‘Ewa Shaft, O‘ahu, Hawai‘i Measuring surface-water loss in Honouliuli Stream near the ‘Ewa Shaft, O‘ahu, Hawai‘i
The Honolulu Board of Water Supply is currently concerned with the possibility of bacteria in the pumped water of the ‘Ewa Shaft (State well 3-2202-21). Groundwater from the ‘Ewa Shaft could potentially be used to meet future potable water needs in the ‘Ewa area on the island of O‘ahu. The source of the bacteria in the pumped water is unknown, although previous studies indicate that...
Authors
Sarah N. Rosa
Water-quality and lake-stage data for Wisconsin lakes, water year 2014 Water-quality and lake-stage data for Wisconsin lakes, water year 2014
Authors
S. Bridgett Manteufel, Dale M. Robertson
Water-quality and lake-stage data for Wisconsin lakes, water years 2012–2013 Water-quality and lake-stage data for Wisconsin lakes, water years 2012–2013
Authors
S. Bridgett Manteufel, Dale M. Robertson
Summary of oceanographic and water-quality measurements in Chincoteague Bay, Maryland and Virginia, 2014–15 Summary of oceanographic and water-quality measurements in Chincoteague Bay, Maryland and Virginia, 2014–15
U.S. Geological Survey scientists and technical support staff measured oceanographic, waterquality, seabed-elevation-change, and meteorological parameters in Chincoteague Bay, Maryland and Virginia, during the period of August 13, 2014, to July 14, 2015, as part of the Estuarine Physical Response to Storms project (GS2–2D) supported by the Department of the Interior Hurricane Sandy...
Authors
Steven E. Suttles, Neil K. Ganju, Sandra M. Brosnahan, Ellyn T. Montgomery, Patrick J. Dickhudt, Alexis Beudin, Daniel J. Nowacki, Marinna A. Martini
Assessment of continuous gas resources in the Khorat Plateau Province, Thailand and Laos, 2016 Assessment of continuous gas resources in the Khorat Plateau Province, Thailand and Laos, 2016
Using a geology-based assessment methodology, the U.S. Geological Survey assessed mean undiscovered, technically recoverable resources of 2.3 trillion cubic feet of continuous gas in the Khorat Plateau Province of Thailand and Laos.
Authors
Christopher J. Schenk, Timothy R. Klett, Tracey J. Mercier, Thomas M. Finn, Marilyn E. Tennyson, Stephanie B. Gaswirth, Kristen R. Marra, Phuong A. Le, Ronald M. Drake