Expectations of Maurepas Swamp response to a river reintroduction, Louisiana
Ken W. Krauss, Gary P. Shaffer, Richard F. Keim, Jim L. Chambers, William B. Wood, Stephen B. Hartley
2018, Fact Sheet 2018-3072
Mississippi River reintroductions (freshwater diversions) into wetlands previously disconnected from the river have been implemented in southeastern Louisiana as a means to rehabilitate degraded and submerging wetlands. To date, all active Mississippi River reintroductions have targeted marsh habitat. However, a 57 cubic meter per second (2,000 cubic foot per second)...
Assessment of environmental flows in the middle Verde River watershed, Arizona
Bruce Gungle, Nicholas V. Paretti
2018, Fact Sheet 2018-3062
This report summarizes analyses of middle Verde River watershed environmental flows detailed in U.S. Geological Survey Scientific Investigations Report 2017-5100, “Preliminary synthesis and assessment of environmental flows in the middle Verde River watershed, Arizona," by N.V. Paretti, A.M.D. Brasher, S.L. Pearlstein, D.M. Skow, B. Gungle, and...
2018 hurricane and wildfire supplemental funding: USGS recovery activities
Jo Ellen Hinck, Joseph Stachyra
2018, Fact Sheet 2018-3063
The Additional Supplemental Appropriations for Disaster Relief Requirements Act, 2018 (P.L. 115-123), was signed by the President on February 9, 2018. This funding provided $42.2 million to the U.S. Geological Survey (USGS) for equipment repair and replacement, high-resolution elevation data collection in both hurricane- and wildfire-impacted areas, and scientific studies...
Assessment of continuous oil and gas resources of the Putumayo-Oriente-Marañón Basin Province of Colombia, Ecuador, and Perú, 2018
Christopher J. Schenk, Tracey J. Mercier, Janet K. Pitman, Thomas M. Finn, Phuong A. Le, Stephanie B. Gaswirth, Kristen R. Marra, Heidi M. Leathers-Miller
2018, Fact Sheet 2018-3048
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 1.1 billion barrels of oil and 793 billion cubic feet of gas in the Putumayo-Oriente-Marañón Basin Province of Colombia, Ecuador, and Perú....
Williston Basin groundwater availability, United States and Canada
Joanna N. Thamke, Andrew J. Long, Kyle W. Davis
2018, Fact Sheet 2018-3046
The Williston Basin contains important oil and gas resources for the Nation. Freshwater supplies are limited in this semiarid area, and oil and gas development can require large volumes of freshwater. Groundwater is the primary source of water for many water users in the Williston Basin, so to better understand...
Sediment Source Assessment Using Sediment Fingerprints
Allen C. Gellis, Lillian E. Gorman Sanisaca, Matthew J. Cashman
2018, Fact Sheet 2018-3008
ProblemSediment is one of the most common causes of loss of stream-biologic integrity, whether in suspension in the water column, or as deposition on a stream or lake bottom. Fine-grained silts and clays are of particular concern because they can degrade habitat and often carry phosphorus and (or) other contaminants...
Frequency of volcanic eruptions in the Mammoth Lakes Sierra
Wes Hildreth, Andrew T. Calvert, Judith Fierstein, Mae Marcaida
2018, Fact Sheet 2018-3059
Geologists recognize lavas and ash deposits from about 60 past eruptions in the area around Mammoth Mountain and Devils Postpile, California. This raises the unanswerable question, “When will it erupt again?” An alternative, answerable, and informative question is, “How often has it erupted?”In the Mammoth Lakes Sierra, geologists have mapped...
Comparing public-supply and shallow aquifer groundwater quality in the North San Francisco Bay Aquifers, California
George L. V Bennett V
2018, Fact Sheet 2018-3064
Groundwater quality in the North San Francisco Bay area Public-Supply and Shallow Aquifer Systems was investigated by the GAMA-PBP. The North San Francisco Bay Public-Supply Aquifer System study unit (NSF-PA) was sampled in 2004. The North San Francisco Bay Shallow Aquifer System study unit (NSF-SA) was sampled in 2012. The...
Water use in Washington, 2015
Elisabeth T. Fasser
2018, Fact Sheet 2018-3058
BackgroundWater use in the State of Washington has evolved during the past century from small withdrawals used for domestic and stock needs to the diverse needs of current public supply systems, domestic water users, irrigation projects, industrial plants, and aquaculture industries. Increasing demand for water makes the accountability of water...
Assessment of undiscovered oil and gas resources in the Akita Basin Province, Japan, 2018
Christopher J. Schenk, Tracey J. Mercier, Marilyn E. Tennyson, Cheryl A. Woodall, Thomas M. Finn, Phuong A. Le, Kristen R. Marra, Stephanie B. Gaswirth, Heidi M. Leathers-Miller, Ronald M. Drake II
2018, Fact Sheet 2018-3047
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 111 million barrels of oil and 85 billion cubic feet of gas in the Akita Basin Province of Japan....
New insights into surface-water/groundwater exchanges in the Guadalupe River, Texas, from floating geophysical methods
Scott J. Ikard, J. Ryan Banta, Gregory P. Stanton
2018, Fact Sheet 2018-3057
In south-central Texas, the amount of streamflow in the Guadalupe River is a primary concern for local and downstream communities because of municipal, agricultural, wildlife, and recreational uses. Understanding the flow paths and rates of exchange between the surface water in the river and the groundwater in the underlying Carrizo-Wilcox...
Hydrologic conditions in Kansas, water year 2017
Bradley S. Lukasz
2018, Fact Sheet 2018-3060
The U.S. Geological Survey, in cooperation with Federal, State, and local agencies, maintains a long-term network of hydrologic monitoring stations in Kansas. These data and associated analyses provide a unique overview of the hydrologic conditions and help improve the understanding of Kansas’ water resources. Yearly assessments of hydrologic conditions are...
Assessment of continuous gas resources of the North Caspian Basin Province, Kazakhstan and Russia, 2018
Christopher J. Schenk, Tracey J. Mercier, Thomas M. Finn, Marilyn E. Tennyson, Phuong A. Le, Michael E. Brownfield, Kristen R. Marra, Stephanie B. Gaswirth, Heidi M. Leathers-Miller, Ronald M. Drake II
2018, Fact Sheet 2018-3051
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 84.5 trillion cubic feet of continuous gas in the North Caspian Basin Province of Kazakhstan and Russia....
Assessment of continuous oil and gas resources of the Timan-Pechora Basin Province, Russia, 2018
Christopher J. Schenk, Tracey J. Mercier, Janet K. Pitman, Phuong A. Le, Marilyn E. Tennyson, Michael E. Brownfield, Kristen R. Marra, Heidi M. Leathers-Miller, Ronald M. Drake II, Timothy R. Klett
2018, Fact Sheet 2018-3050
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 1.4 billion barrels of oil and 46 trillion cubic feet of gas in the Timan-Pechora Basin Province of Russia....
Changes in Earth’s gravity reveal changes in groundwater storage
Jeffrey R. Kennedy
2018, Fact Sheet 2018-3032
Changes in the amount of water stored in underground aquifers cause small changes in Earth’s gravitational field. The U.S. Geological Survey’s Southwest Gravity Program has developed methods for measuring terrestrial gravity changes with part-per-billion precision. The measurements allow scientists to map changes in groundwater storage and to improve models...
U.S. Landsat Analysis Ready Data
U.S. Geological Survey
2018, Fact Sheet 2018-3053
U.S. Landsat Analysis Ready Data (ARD) are a revolutionary new U.S. Geological Survey science product that allows the Landsat archive to be more accessible and easier to analyze and reduces the amount of time users spend on data processing for monitoring and assessing landscape change. U.S. Landsat ARD are Level-2 products derived...
The Hayward Fault—Is it due for a repeat of the powerful 1868 earthquake?
Thomas M. Brocher, Jack Boatwright, James J. Lienkaemper, Carol S. Prentice, David P. Schwartz, Howard Bundock
2018, Fact Sheet 2018-3052
On October 21, 1868, a magnitude 6.8 earthquake struck the San Francisco Bay area. Although the region was sparsely populated, the quake on the Hayward Fault was one of the most destructive in California’s history. U.S. Geological Survey (USGS) studies show that similar Hayward Fault quakes have repeatedly jolted...
Divisions of geologic time—Major chronostratigraphic and geochronologic units
U.S. Geological Survey Geologic Names Committee
2018, Fact Sheet 2018-3054
IntroductionEffective communication in the geosciences requires a consistent nomenclature for stratigraphic units and, especially, for divisions of geologic time. A geologic time scale is composed of standard stratigraphic divisions based on rock sequences and is calibrated in years.Geologists from the U.S. Geological Survey (USGS), State geological surveys, academia, and other...
Streamflow - Water Year 2017
Xiaodong Jian, David M. Wolock, Steven J. Brady, Harry F. Lins
2018, Fact Sheet 2018-3056
The maps and graphs in this summary describe national streamflow conditions for water year 2017 (October 1, 2016, to September 30, 2017) in the context of streamflow ranks relative to the 88-year period of 1930–2017, unless otherwise noted. The illustrations are based on observed data from the U.S. Geological Survey (USGS)...
Assessment of undiscovered oil and gas resources in the Midlands area, England, 2018
Christopher J. Schenk, Marilyn E. Tennyson, Tracey J. Mercier, Cheryl A. Woodall, Thomas M. Finn, Stephanie B. Gaswirth, Phuong A. Le, Michael E. Brownfield, Kristen R. Marra, Heidi M. Leathers-Miller
2018, Fact Sheet 2018-3028
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean undiscovered, technically recoverable resources of 319 million barrels of oil and 8.3 trillion cubic feet of gas in the Midlands area of England....
Assessment of undiscovered conventional oil resources of the East Gobi, Nyalga, Tamtsag-Hailar, Erlian, and Yingen basins of Mongolia and China, 2018
Christopher J. Schenk, Tracey J. Mercier, Janet K. Pitman, Thomas M. Finn, Cheryl A. Woodall, Kristen R. Marra, Phuong A. Le, Heidi M. Leathers-Miller
2018, Fact Sheet 2018-3041
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean conventional resources of 187 million barrels of oil and 85 billion cubic feet of gas in the East Gobi, Nyalga, Tamtsag-Hailar, Erlian, and Yingen basins of Mongolia and China....
Assessment of undiscovered continuous oil resources of the East Gobi, Nyalga, Tamtsag-Hailar, Erlian, and Yingen basins of Mongolia and China, 2018
Christopher J. Schenk, Tracey J. Mercier, Janet K. Pitman, Thomas M. Finn, Cheryl A. Woodall, Kristen R. Marra, Phuong A. Le, Heidi M. Leathers-Miller
2018, Fact Sheet 2018-3040
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean continuous resources of 1.1 billion barrels of oil and 674 billion cubic feet of associated gas in the East Gobi, Nyalga, Tamtsag-Hailar, Erlian, and Yingen basins of Mongolia and China....
Landsat Collections
U.S. Geological Survey
2018, Fact Sheet 2018-3049
In 2016, the U.S. Geological Survey reorganized the Landsat archive into a tiered collection structure, which ensures that Landsat Level-1 products provide a consistent archive of known data quality to support time-series analyses and data “stacking” while controlling continuous improvement of the archive and access to all data as they are...
Biological and ecological science for Ohio—The Buckeye State
U.S. Geological Survey
2018, Fact Sheet 2018-3034
Ohio is home to lakes, rivers, streams, wetlands, forests, prairies, and 312 miles of Lake Erie shoreline. These resources sustain Ohio’s communities by supporting vital sectors of the economy and cultural heritage such as fishing, hunting, and other outdoor recreation. Lake Erie provides drinking water for 3 million Ohioans,...
Assessment of undiscovered continuous oil and gas resources in the Upper Cretaceous Tuscaloosa marine shale of the U.S. Gulf Coast, 2018
Paul C. Hackley, Catherine B. Enomoto, Brett J. Valentine, William A. Rouse, Celeste D. Lohr, Frank T. Dulong, Javin J. Hatcherian, Sean T. Brennan, William H. Craddock, Thomas M. Finn, Stephanie B. Gaswirth, Phuong A. Le, Heidi M. Leathers-Miller, Kristen R. Marra, Tracey J. Mercier, Stanley T. Paxton, Katherine J. Whidden, Cheryl A. Woodall, Christopher J. Schenk
2018, Fact Sheet 2018-3043
Using a geology-based assessment methodology, the U.S. Geological Survey assessed mean undiscovered, technically recoverable continuousresources of 1.5 billion barrels of oil and 4.6 trillion cubic feet of gas in the Upper Cretaceous Tuscaloosa marine shale in onshore and State waters ofLouisiana, Mississippi, Alabama, and Florida in the U.S. Gulf Coast...
