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The Southwest Region ranges from the Colorado Rockies to the Gulf Coast and the Western Deserts to the Great Plains. The Southwest Region conducts multi- and interdisciplinary research and monitoring in locations across the Region, the United States, around the world, and across our solar system.

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Map of Oklahoma Low-Level Flight Study Area, Approximate
June 1, 2018

Magnetic measurements made during low-altitude airplane flights conducted for the U.S. Geological Survey and the Oklahoma Geological Survey reveal possible deep faults that may contribute to increased seismic activity in response to wastewater injection in certain portions of Oklahoma.

Image shows a detail of a yellow mineral on white rock
November 14, 2017

Estimates of Potential Uranium in the Southern High Plains Could Equal Just Under One Year of U.S. Needs.

Satellite captured image of the rapidly intensifying storm, Harvey
September 6, 2017

USGS Oklahoma Water Science Center staff are assisting the Texas Water Science Center with streamflow measurements and high-water mark determinations in the aftermath of Hurricane Harvey.  This information is vital for future flood warnings issued by the National Weather Service.

Oklahoma Groundwater Effects. Turner Falls, the largest waterfall in Oklahoma, near Davis, Oklahoma. Springs discharging from the Arbuckle-Simpson aquifer into Honey Creek are the source of water to Turner Falls.

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Filter Total Items: 40
Photo of Bird Bands in a Variety of Sizes and Types
Date Published: May 1, 2018
Status: Active

Bird Banding Laboratory

The Bird Banding Laboratory (BBL) is an integrated scientific program established in 1920 supporting the collection, archiving, management and dissemination of information from banded and marked birds in North America.  This information is used to monitor the status and trends of resident and migratory bird populations. Because birds are good indicators of the health of the environment, the...

dbflood-image
Date Published: September 21, 2017
Status: Active

Flood Database for Oklahoma

A web-mapping application for historical flood information organization and access.

Contacts: S. Jerrod Smith
OKC urban runoff site
Date Published: August 2, 2017
Status: Active

Green Infrastructure, CECs, and Geochemistry in Urban Stormwater Runoff used to Recharge Groundwater

This national project is a joint effort between the USGS and EPA looking at contaminants of emerging concern (CECs) in urban stormwater runoff that is infiltrated into the subsurface or likely to be infiltrated in the future.

Phase I of the project aims to provide a broad-scale assessment of contaminants of emerging concern (CECs) and basic composition of water chemistry in urban...

Contacts: Jason Masoner
Groundwater-monitoring well in Osage County, Oklahoma.
Date Published: August 1, 2017
Status: Active

Deep Well Monitoring During Seismic Activity

The USGS Oklahoma Water Science Center is working cooperatively with the USGS Earthquake Science Center (California) to monitor real-time downhole pressures, temperatures, and water levels in an effort to understand changes in pore-fluid pressure in the Arbuckle Group associated with seismic activity.

Contacts: Shana Mashburn
Rush Springs aquifer outcrop near Binger, Oklahoma, 2010. Photograph taken by Shana Mashburn.
Date Published: July 12, 2017
Status: Active

Groundwater Monitoring on Fort Sill Apache Tribal Lands

This USGS investigation will examine the hydraulic properties of the Rush Springs aquifer underlying Fort Sill Apache tribal lands to determine their potential for groundwater development. The information gathered from this investigation will assist the Fort Sill Apache Tribe in identifying well locations with optimal long-term pumping capacity and water quality.

Contacts: Leland Fuhrig
Tri-State Ground-Water Modeling Illustration
Date Published: June 30, 2017

Tri-State Ground-Water Modeling

Short Title: Tri-State Ground-Water Model
Project Chief: Jonathan Gillip
Cooperators: Kansas Water Board
Project Time Frame: 2005 - present

To assess the effect that increased water use is having on the long-term availability of groundwater within the Ozark Plateaus aquifer system, a...

Norfolk Road Bridge over Cimarron River, Payne County, OK
Date Published: June 9, 2017
Status: Active

Water Budget Analysis of the Pawnee Tribe Jurisdictional Area in Payne County, OK

The objective of this proposed project is to construct an annual water budget for the Cimarron River alluvial aquifer between USGS streamgages Cimarron River near Ripley, OK and a proposed new USGS streamgage. Components of the water budget (precipitation, [runoff], evapotranspiration, stream base flow, bedrock lateral flow, and groundwater pumping) will be calculated for the 2017 water year (...

Contacts: Shana Mashburn
Black Bear Creek at Pawnee, OK
Date Published: June 9, 2017
Status: Active

Black Bear Creek Watershed Hydrologic Summary for the Pawnee Nation of Oklahoma

The objectives of this project are to compile, summarize, and analyze available data and reports from the Pawnee Nation, the USGS, and other government agencies. The final report of the analysis will provide a comprehensive background document for geographic, hydrologic, and environmental features of the area and will identify gaps in available data that need to be filled for the Pawnee Nation...

Chikaskia River at Tonkawa, OK
Date Published: June 9, 2017
Status: Active

Tonkawa Tribe Groundwater Survey

The objective of this study is to analyze the alluvial aquifer of the Chikaskia River to determine the potential for additional groundwater resources for the Tonkawa Tribe’s water supply. This investigation will examine the depth, lithology, hydraulic properties, and general water quality of the Chikaskia River alluvial aquifer.

Contacts: Nicole Paizis
River Bathymetry
Date Published: June 9, 2017
Status: Completed

Neosho, Spring, and Elk Rivers Bathymetry

In support of the Federal Energy Regulatory Commission relicensing process, the U.S. Geological Survey, in cooperation with the Grand River Dam Authority, performed bathymetric surveys of (1) the Neosho River from the Oklahoma border to the U.S. Highway 60 bridge at Twin Bridges State Park, (2) the Spring River from the Oklahoma border to the U.S. Highway 60 bridge at Twin Bridges State Park,...

Contacts: Shelby Hunter
Aerial photograph of Shawnee Reservoir looking southwest
Date Published: June 9, 2017
Status: Completed

Shawnee Twin Lakes Bathymetry

Shawnee Reservoir (locally known as Shawnee Twin Lakes) is a man-made reservoir on South Deer Creek with a drainage area of 32.7 square miles in Pottawatomie County, Oklahoma. The U.S. Geological Survey (USGS), in cooperation with the City of Shawnee, has operated a real-time stage (water-surface elevation) gage (USGS station 07241600) at Shawnee Reservoir since 2006. The purposes of the...

Contacts: S. Jerrod Smith
Washita River
Date Published: May 12, 2017
Status: Active

Washita River Reach 3 and 4 Alluvial Aquifer Study

The objectives of this investigation are to describe the hydrogeology, and construct, calibrate, and use a numerical groundwater-flow model to simulate the effects of transient stresses and various pumping and climate scenarios for Reaches 3 and 4 of the Washita River alluvial aquifer.

Oklahoma Groundwater Effects. Turner Falls, the largest waterfall in Oklahoma, near Davis, Oklahoma. Springs discharging from the Arbuckle-Simpson aquifer into Honey Creek are the source of water to Turner Falls.

Filter Total Items: 18
Water
/data-tools/national-water-information-system-web-interface-nwisweb-0

National Water Information System web interface (NWISweb)

Application screenshot thumbnail
September 1, 2017

The National Water Information System (NWIS) web application provides access to real-time and historical surface-water, groundwater, water-quality, and water-use data collected at approximately 1.5 million sites across all 50 states.

Web Application
/data-tools/national-water-information-system-nwis-mapper

National Water Information System (NWIS) Mapper

NWIS Mapper screenshot
August 30, 2017

The NWIS mapper provides access to over 1.5 million sites contained in the USGS National Water Information System (NWIS), including sites where current and historical surface-water, groundwater, springs, and atmospheric data has been collected. Users can search by site type, data type, site number, or place.

Droughts
/data-tools/us-drought-portal

U.S. Drought Portal

National Integrated Drought Information System logo
April 27, 2017

National Integrated Drought Information System's U.S. Drought Portal.

Water
/data-tools/surface-water-data-oklahoma

Surface-water data for Oklahoma

OK surface-water example
April 13, 2017

Real-time and historical streamflow data collected throughout Oklahoma.

Water
/data-tools/groundwater-data-oklahoma

Groundwater data for Oklahoma

OK groundwater example
April 13, 2017

Current and historical groundwater data for Oklahoma.

Water
/data-tools/water-quality-data-oklahoma

Water-quality data for Oklahoma

OK qw example
April 13, 2017

Current and historical water-quality data for Oklahoma.

Water
/data-tools/water-use-data-oklahoma

Water-use data for Oklahoma

OK water-use example
April 13, 2017

Historical water-use data for Oklahoma.

Water
/data-tools/lake-level-data-oklahoma

Lake-level data for Oklahoma

OK lake example
April 13, 2017

Real-time and historical lake-level data for Oklahoma.

Water
/data-tools/recent-flow-and-stage-oklahoma

Recent flow and stage for Oklahoma

OK flood table example
January 1, 2017

Access recent flood and stage data for streams and rivers throughout Oklahoma.

GIS Data
/data-tools/structures-data

Structures Data

Structure datasets for the nation from The National Map
April 20, 2016

USGS data portray selected structures data, including the location and characteristics of manmade facilities. Characteristics consist of a structure's physical form (footprint), function, name, location, and detailed information about the structure. The types of structures collected are largely determined by the needs of the disaster planning and response and homeland security organizations.

GIS Data
/data-tools/boundaries

Boundaries Data

Boundaries datasets for the nation from The National Map.
April 19, 2016

Boundaries data or governmental units represent major civil areas including states, counties, Federal, and Native American lands, and incorporated places such as cities and towns.

GIS Data
/data-tools/hydrography-data

Hydrography Data

Illustration related to the the river corridor
April 19, 2016

The National Hydrography Dataset (NHD) and Watershed Boundary Dataset (WBD) are used to portray surface water on The National Map.

Oklahoma Groundwater Effects. Turner Falls, the largest waterfall in Oklahoma, near Davis, Oklahoma. Springs discharging from the Arbuckle-Simpson aquifer into Honey Creek are the source of water to Turner Falls.

Filter Total Items: 11
GRDA bathymetry
September 22, 2017

View topographic and bathymetric contour data and query water depths for the Neosho River, Spring River and Elk River, in northeastern Oklahoma.

Funding partners: Grand River Dam Authority

OK earthquake map
August 2, 2017

Information on the latest earthquakes in Oklahoma.

Miami Inundation Pilot Viewer
January 1, 2017

View topographic and bathymetric contour data and simulate Neosho River inundation areas for selected (and real-time) water-surface elevations at Grand Lake and the Neosho River streamgage near Commerce

Funding partners: U.S. Army Corps of Engineers, Grand River Dam Authority, and Oklahoma Department of Wildlife 

Shawnee Reservoir Data Viewer
January 1, 2017

View topographic and bathymetric contour data and simulate Shawnee (Twin Lakes) Reservoir inundation areas for selected (and real-time) water-surface elevations.

Funding partners: City of Shawnee

Digital Elevation Model in the Atchafalaya Basin, LA
April 19, 2016

The 3DEP products and services available through The National Map consist of standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.

Grand Lake Image
March 3, 2016

Grand Lake Data Viewer - View topographic and bathymetric contour data and simulate Grand Lake inundation areas for selected water-surface elevations.

Funding partners: U.S. Army Corps of Engineers, Grand River Dam Authority, and Oklahoma Department of Wildlife Conservation

 

OK drought watch example
January 1, 2016

Drought monitoring for Oklahoma.

dbflood-image
September 1, 2015

Flood Database for Oklahoma - Obtain records of historical flood depth and discharge measurements as well as flood-related news clippings.

Funding partners: Oklahoma Department of Transportation

StreamStats in Oklahoma
January 1, 2015

Delineate custom drainage basins, compute basin characteristics, and estimate streamflow statistics.

Funding partners: Oklahoma Department of Transportation and Oklahoma Water Resources Board

OK flood map example
January 1, 2010

View flooding high and low flows for streams and rivers throughout Oklahoma on the USGS WaterWatch website.

Filter Total Items: 20
Year Published: 2018

A flatfile of ground motion intensity measurements from induced earthquakes in Oklahoma and Kansas

We have produced a uniformly processed database of orientation-independent (RotD50, RotD100) ground motion intensity measurements containing peak horizontal ground motions (accelerations and velocities) and 5-percent-damped pseudospectral accelerations (0.1–10 s) from more than 3,800 M ≥ 3 earthquakes in Oklahoma and Kansas that occurred...

Rennolet, Steven B.; Moschetti, Morgan P.; Thompson, Eric M.; Yeck, William L.

Year Published: 2017

Considerations in comparing the U.S. Geological Survey one‐year induced‐seismicity hazard models with “Did You Feel It?” and instrumental data

The recent steep increase in seismicity rates in Oklahoma, southern Kansas, and other parts of the central United States led the U.S. Geological Survey (USGS) to develop, for the first time, a probabilistic seismic hazard forecast for one year (2016) that incorporates induced seismicity. In this study, we explore a process to ground‐truth the...

White, Isabel; Liu, Taojun; Luco, Nicolas; Liel, Abbie
White IJO, Liu T, Luco N, & Liel AB (2017), "Considerations in Comparing the U.S. Geological Survey One-Year Induced-Seismicity Hazard Models with "Did You Feel It?" and Instrumental Data," Seismological Research Letters, Vol. 89(1), pp. 127-137.

Year Published: 2017

Spatio-temporal evolution of the 2011 Prague, Oklahoma aftershock sequence revealed using subspace detection and relocation

The 6 November 2011 Mw 5.7 earthquake near Prague, Oklahoma is the second largest earthquake ever recorded in the state. A Mw 4.8 foreshock and the Mw 5.7 mainshock triggered a prolific aftershock sequence. Utilizing a subspace detection method, we increase by fivefold the number of precisely located events between 4...

McMahon, Nicole D; Aster, Richard C.; Yeck, William L.; McNamara, Daniel E.; Benz, Harley M.
McMahon, N. D., R. C. Aster, W. L. Yeck, D. E. McNamara, and H. M. Benz (2017), Spatiotemporal evolution of the 2011 Prague, Oklahoma, aftershock sequence revealed using subspace detection and relocation, Geophys. Res. Lett., 44, doi:10.1002/2017GL072944.

Year Published: 2017

Oklahoma experiences largest earthquake during ongoing regional wastewater injection hazard mitigation efforts

The 3 September 2016, Mw 5.8 Pawnee earthquake was the largest recorded earthquake in the state of Oklahoma. Seismic and geodetic observations of the Pawnee sequence, including precise hypocenter locations and moment tensor modeling, shows that the Pawnee earthquake occurred on a previously unknown left-lateral strike-slip basement fault that...

Yeck, William L.; Hayes, Gavin; McNamara, Daniel E.; Rubinstein, Justin L.; Barnhart, William D.; Earle, Paul; Benz, Harley M.
Yeck, W. L., G. P. Hayes, D. E. McNamara, J. L. Rubinstein, W. D. Barnhart, P. S. Earle, and H. M. Benz (2017), Oklahoma experiences largest earthquake during ongoing regional wastewater injection hazard mitigation efforts, Geophys. Res. Lett., 44, 711–717,

Year Published: 2016

Far-field pressurization likely caused one of the largest injection induced earthquakes by reactivating a large pre-existing basement fault structure

The Mw 5.1 Fairview, Oklahoma, earthquake on 13 February 2016 and its associated seismicity produced the largest moment release in the central and eastern United States since the 2011 Mw 5.7 Prague, Oklahoma, earthquake sequence and is one of the largest earthquakes potentially linked to wastewater injection. This energetic sequence has produced...

Yeck, William L.; Weingarten, Matthew; Benz, Harley M.; McNamara, Daniel E.; Bergman, E.; Herrmann, R.B; Rubinstein, Justin L.; Earle, Paul

Year Published: 2016

Historical files from Federal Government mineral exploration-assistance programs, 1950 to 1974

The Defense Minerals Administration (DMA), Defense Minerals Exploration Administration (DMEA), and Office of Minerals Exploration (OME) mineral exploration programs were active over the period 1950–1974. Under these programs, the Federal Government contributed financial assistance in the exploration for certain strategic and critical minerals. The...

Frank, David G.
Frank, D.G., 2016, Historical files from Federal Government mineral exploration-assistance programs, 1950 to 1974: U.S. Geological Survey Data Series 1004, http://dx.doi.org/10.3133/ds1004.

Year Published: 2016

Likelihood testing of seismicity-based rate forecasts of induced earthquakes in Oklahoma and Kansas

Likelihood testing of induced earthquakes in Oklahoma and Kansas has identified the parameters that optimize the forecasting ability of smoothed seismicity models and quantified the recent temporal stability of the spatial seismicity patterns. Use of the most recent 1-year period of earthquake data and use of 10–20-km smoothing distances...

Moschetti, Morgan P.; Hoover, Susan M.; Mueller, Charles

Year Published: 2015

Reactivated faulting near Cushing, Oklahoma: Increased potential for a triggered earthquake in an area of United States strategic infrastructure

In October 2014 two moderate-sized earthquakes (Mw 4.0 and 4.3) struck south of Cushing, Oklahoma, below the largest crude oil storage facility in the world. Combined analysis of the spatial distribution of earthquakes and regional moment tensor focal mechanisms indicate reactivation of a subsurface unnamed and unmapped left-lateral strike-slip...

McNamara, Daniel E.; Hayes, Gavin; Benz, Harley M.; Williams, Robert; McMahon, Nicole D; Aster, R.C.; Holland, Austin F.; Sickbert, T; Herrmann, Robert B.; Briggs, Richard; Smoczyk, Gregory M.; Bergman, Eric; Earle, Paul S.

Year Published: 2015

Hundreds of earthquakes per day: The 2014 Guthrie, Oklahoma, Earthquake Sequence

A remarkable increase in seismic activity in Oklahoma since 2009 has been shown to correlate closely with enhanced hydrocarbon extraction and associated wastewater disposal; 99% of this recent Oklahoma earthquake activity has occurred within 15 km of a call II injection well (Ellsworth, 2013). In response to this increase in seismic activity,...

Benz, Harley M.; McMahon, Nicole D; Aster, R; McNamara, Daniel E.; Harris, David J.
Benz, H.M., McMahon, N.D., Aster, R.C., McNamara, D.E. and Harris, D.B. (2015). Hundreds of Earthquakes per Day: The 2014 Guthrie, Oklahoma, Earthquake Sequence, Seismological Research Letters 86(5), 1318-1325. DOI: 10.1785/0220150019

Year Published: 2015

Efforts to monitor and characterize the recent increasing seismicity in central Oklahoma

The sharp increase in seismicity over a broad region of central Oklahoma has raised concerns regarding the source of the activity and its potential hazard to local communities and energy-industry infrastructure. Efforts to monitor and characterize the earthquake sequences in central Oklahoma are reviewed. Since early 2010, numerous organizations...

McNamara, Daniel E.; Rubinstein, Justin L.; Myers, Emma; Smoczyk, Gregory M.; Benz, Harley M.; Williams, Robert; Hayes, Gavin; Wilson, David C.; Herrmann, Robert B.; McMahon, Nicole D; Aster, R.C.; Bergman, E.; Holland, Austin; Earle, Paul
McNamara, D.E., J. L. Rubinstein, E. Myers, G. Smoczyk, H.M. Benz, R.A. Williams, G. Hayes, D. Wilson, R. Herrmann, N.D. McMahon, R.C. Aster, E. Bergman, A. Holland, P. Earle, (2015), Efforts to monitor and characterize the recent increasing seismicity in central Oklahoma, The Leading Edge, Special Section: Injection-induced seismicity, June 2015, 936-943.

Year Published: 2015

Earthquake hypocenters and focal mechanisms in central Oklahoma reveal a complex system of reactivated subsurface strike-slip faulting

The sharp increase in seismicity over a broad region of central Oklahoma has raised concern regarding the source of the activity and its potential hazard to local communities and energy industry infrastructure. Since early 2010, numerous organizations have deployed temporary portable seismic stations in central Oklahoma in order to record the...

McNamara, Daniel E.; Benz, Harley M.; Herrmann, Robert B.; Bergman, Eric A.; Earle, Paul S.; Holland, Austin F.; Baldwin, Randy W.; Gassner, A.

Year Published: 2014

Finite-fault slip model of the 2011 Mw 5.6 Prague, Oklahoma earthquake from regional waveforms

The slip model for the 2011 Mw 5.6 Prague, Oklahoma, earthquake is inferred using a linear least squares methodology. Waveforms of six aftershocks recorded at 21 regional stations are used as empirical Green's functions (EGFs). The solution indicates two large slip patches: one located around the hypocenter with a depth range of 3–5.5 km; the...

Sun, Xiaodan; Hartzell, Stephen
Finite-fault slip model of the 2011 Mw 5.6 Prague, Oklahoma earthquake from regional waveforms; 2014; Article; Journal; Geophysical Research Letters; Xiaodan, Sun; Hartzell, Stephen

Oklahoma Groundwater Effects. Turner Falls, the largest waterfall in Oklahoma, near Davis, Oklahoma. Springs discharging from the Arbuckle-Simpson aquifer into Honey Creek are the source of water to Turner Falls.

Filter Total Items: 44
Image from an application that navigates users through USGS National Oil and Gas Assessment Provinces
November 14, 2018

National Oil and Gas Assessment Provinces

This is a graphic from the USGS National Oil and Gas Assessment Explorer application, which allows user to drill into 70 oil and gas assessment provinces throughout the United States.

Rafters on the Illinois River
May 7, 2018

Illinois River Floatcam

Rafters enjoy the floating down the Illinois River in northeast Okalahoma.

December 31, 2017

Groundwater use from the Ozark Plateaus aquifer system, 1900 to 2010

Groundwater use from the Ozark Plateaus aquifer system, 1900 to 2010” is a short video showing modeled groundwater withdrawal rates from the Ozark Plateaus aquifer system (Ozark system) in the central United States. The Ozark Plateaus Groundwater Availability Study aims to quantify current groundwater resources in the Ozark system, evaluate how these resources have changed

...
August 7, 2017

Developing Effective Drought Monitoring Tools for Farmers and Ranchers

This webinar was conducted on August 7, 2017 as part of the USGS National Climate Change and Wildlife Science Center’s Climate Change Science and Management Webinar Series, held in partnership with the USFWS National Conservation Training Center. 

Webinar Summary: The South Central U.S. is one of the main agricultural regions in North America: annual agricultural

...
Tonkawa Geoprobing 052517
May 25, 2017

Tonkawa Geoprobing 052517

Tonkawa Geoprobing 052517

Chikaskia River at Tonkawa, OK
May 9, 2017

Chikaskia River at Tonkawa, OK

Chikaskia River at Tonkawa, OK

Geoprobe fieldwork at Tonkawa, OK
May 9, 2017

Geoprobe fieldwork at Tonkawa, OK

Geoprobe fieldwork at Tonkawa, OK

Groundwater-monitoring well in Osage County, Oklahoma.
April 5, 2017

Groundwater-monitoring well in Osage County, Oklahoma.

Groundwater-monitoring well and telemetry equipment in Osage County, Oklahoma

Kansas Wildfires, March 2017, Landsat 8
March 31, 2017

March Wildfires Scorch Kansas, Oklahoma Farm and Ranch Land

This March 2017 Landsat 8 image shows massive burned scars in Kansas and Oklahoma. More than 730,000 acres of farm and ranchland were scorched by wind-driven wildfires that began March 6 and were finally extinguished on March 22.

Pine Creek near Moyer, OK
March 30, 2017

Pine Creek near Moyer, OK

Pine Creek near Moyer, OK

Satellite image showing burn damage caused by fires.
March 17, 2017

Fires Burn Farms and Ranches in Oklahoma and Kansas

Landsat's shortwave infrared (SWIR) band measures reduced moisture content in soil and vegetation. When combined with its near-infrared (NIR) band, which helps reveal actively growing vegetation, Landsat produces highly accurate images and maps of burned areas.

Tuner Falls, OK
February 14, 2017

Tuner Falls, OK

Tuner Falls, OK

Oklahoma Groundwater Effects. Turner Falls, the largest waterfall in Oklahoma, near Davis, Oklahoma. Springs discharging from the Arbuckle-Simpson aquifer into Honey Creek are the source of water to Turner Falls.

Filter Total Items: 54
Map of Oklahoma Low-Level Flight Study Area, Approximate
June 1, 2018

Magnetic measurements made during low-altitude airplane flights conducted for the U.S. Geological Survey and the Oklahoma Geological Survey reveal possible deep faults that may contribute to increased seismic activity in response to wastewater injection in certain portions of Oklahoma.

Satellite captured image of the rapidly intensifying storm, Harvey
September 6, 2017

USGS Oklahoma Water Science Center staff are assisting the Texas Water Science Center with streamflow measurements and high-water mark determinations in the aftermath of Hurricane Harvey.  This information is vital for future flood warnings issued by the National Weather Service.

Image shows a geologic map of the Lower 48
August 21, 2017

A carbonatite here, a glacial moraine there, a zig-zagging fault or two, even a behemoth of a batholith. The geology of the 50 States is an enormous patchwork of varied forms, beautiful in their variance but challenging to present as a single map.

House damage in central Oklahoma from a magnitude 5.6 earthquake in 2011
August 11, 2017

Editor:  In the public interest and in accordance with Federal Aviation Administration regulations, the USGS is announcing this low-level airborne project.  Your assistance in informing the local communities is appreciated.

High Plains aquifer water-level changes, predevelopment to 2015
June 16, 2017

The U.S. Geological Survey has released a new report detailing changes of groundwater levels in the High Plains aquifer. The report presents water-level change data in the aquifer for two separate periods: from 1950 – the time prior to significant groundwater irrigation development – to 2015, and from 2013 to 2015.

USGS
February 17, 2017

Small variations in the density of the earth’s crust—undetectable to humans without sensitive instruments—influence where earthquakes may occur in the central United States. These new findings from the U.S. Geological Survey, published today in Nature Communications, may allow scientists to map where future seismicity in the center of the country is most likely.

Oklahoma
October 24, 2016

Distant wastewater disposal wells likely induced the third largest earthquake in recent Oklahoma record, the Feb. 13, 2016, magnitude 5.1 event roughly 32 kilometers northwest of Fairview, Oklahoma. These findings from the U.S. Geological Survey are available in the online edition of Geophysical Research Letters.

Crop of OK earthquake
September 3, 2016

A magnitude 5.8 earthquake struck in Oklahoma on September 3, 2016 at 12:02:44 UTC (7:02 am local time). 

Map of the 48 contiguous states showing Microcystin concentrations
May 31, 2016

First-of-its-kind survey shows that algal toxins are found nationwide

Oklahoma Groundwater Effects. Turner Falls, the largest waterfall in Oklahoma, near Davis, Oklahoma. Springs discharging from the Arbuckle-Simpson aquifer into Honey Creek are the source of water to Turner Falls.

@usgsminerals
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