Unified Interior Regions

Tennessee

We conduct impartial, multi- and interdisciplinary research and monitoring on a large range of natural-resource issues that impact the quality of life of citizens and landscapes of the Southeastern United States and the Caribbean region.

States L2 Landing Page Tabs

We conduct impartial, multi- and interdisciplinary research and monitoring on a large range of natural-resource issues that impact the quality of life of citizens and landscapes of the Southeastern United States and the Caribbean region.

News

Date published: May 12, 2021

Mapping Challenge Update (05/12/21): Fire Stations in TN

This challenge continues to move closer to the finish line!

Date published: May 6, 2021

Mapping Challenge Update (05/06/21): Fire Stations in TN

With each passing week, the finish line for this challenge gets closer and closer. Back when this challenge was launched, approximately 900 points needed to be edited. Now, just under 300 points remain! Keep up the good work!  

Date published: April 29, 2021

FINISHED!! TNMCorps Mapping Challenge for City / Town Halls in KY & TN

This challenge is now complete! Thank you to everyone who contributed! 

Filter Total Items: 38
Date published: July 31, 2019
Status: Active

Terrestrial Analog Sample Collections

The Astrogeology Terrestrial Analog Sample Collections include three individual sample collections: the Meteor Crater Sample Collection, the Flynn Creek Crater Sample Collection, and the Shoemaker Sample Collection (embed links to individual pages; add buttons to click to go to individual pages). 

 

Click Related Science tab above to navigate to the individual...

Date published: June 4, 2019
Status: Active

Appalachian Basin Geologic Mapping Project

The Appalachian Basin Geologic Mapping Project performs geologic mapping at local and regional scales, and geologic research in The Valley and Ridge and Appalachian Plateaus physiographic provinces. These provinces include parts of 11 states and mainly borders the Blue Ridge / Piedmont and North Interior Lowlands Provinces. Two states have Valley and Ridge geology only (GA, NJ), two have...

Date published: February 25, 2019
Status: Completed

Spring/Summer 2011 Mississippi River Basin Floods

Learn more about USGS flood activities related to the Spring/Summer 2011 floods throughout the Mississippi River Basin.

Date published: February 25, 2019
Status: Completed

May 2011 Memphis, Tennessee Flood

Learn more about USGS flood activities related to the May 2011 flood in Memphis, Tennessee, including deploying emergency real-time surface-water stage gages at critical locations in Shelby County.

Date published: December 7, 2018
Status: Active

Cincinnati Arch Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Cincinnati Arch Province (5066) :

 

Date published: November 30, 2018
Status: Active

Illinois Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered continuous oil and gas resources of the  Illinois Basin Province 5064.

    Date published: October 26, 2018
    Status: Active

    Blue Ridge and Inner Piedmont Geologic Mapping

    The Blue Ridge and Inner Piedmont Geologic Mapping Task (BRIP) is the western focus of geologic mapping and framework studies of the Piedmont and Blue Ridge Project. BRIP will conduct modern geologic mapping and geologic framework studies in the Wytheville, Hickory and Boone 30x60-min. sheets. Collectively, the objectives of BRIP are to (1) characterize the geologic framework of the Blue Ridge...

    Contacts: Arthur Merschat
    Date published: September 27, 2018
    Status: Active

    Piedmont and Blue Ridge Project

    The Piedmont and Blue Ridge Project is a geologic mapping project supported by the USGS National Cooperative Geologic Mapping Program. The Piedmont Blue Ridge Project aims to understand the geologic framework and tectonic evolution of terranes and basins in the Appalachian Piedmont and Blue Ridge, and their significance for water, mineral and energy resources, natural hazards, and engineering/...

    Date published: July 19, 2018
    Status: Active

    Appalachian Basin Oil and Gas Assessments

    The USGS has conducted numerous assessments of undiscovered oil and gas in the Appalachian Basin, including studies of the Marcellus Shale. The region extends from Alabama to Maine. The following is an overview of the assessments.

      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...

      Filter Total Items: 23
      Date published: June 23, 2020

      Global Geochemical Database for Critical Minerals in Archived Mine Samples

      The Critical Minerals in Archived Mine Samples Database (CMDB) contains chemistry and geologic information for historic ore and ore-related rock samples from mineral deposits in the United States. In addition, the database contains samples from archetypal deposits from 27 other countries in North America, South America, Asia, Africa and Europe. Samples were obtained from archived ore

      Date published: April 23, 2020

      Domestic Wells in the United States

      Domestic wells provide drinking water supply for approximately 40 million people in the United States. Knowing the location of these wells, and the populations they serve, is important for identifying heavily used aquifers, locations susceptible to contamination, and populations potentially impacted by poor-quality groundwater. 

      Date published: July 12, 2019

      Crustal Architecture Beneath the Southern Midcontinent (USA) -- Data Grids and 3D Geophysical Models

      Regional grid files and 3D voxel models were used to study crustal architecture beneath the Southern Midcontinent (USA) by McCafferty and others (2019). The study covered a rectangular, multi-state area of 924 by 924 kilometers centered on Missouri, and a corresponding volume extending from the topographic surface to a depth of 50 kilometers below sea level. The grid files consist of

      Date published: July 1, 2019

      Ground-based time-domain electromagnetic data and resistivity models for the Mississippi Alluvial Plain Project

      The Mississippi Alluvial Plain (MAP) Project contains several geologic units which act as important aquifers. We collected several sets of time-domain electromagnetic (TEM) data consisting of two higher-density surveys and six regional-scale transects. The higher density surveys were collected to compare and contrast to other geophysical data not included in this data release, such as a

      Date published: August 28, 2018

      USGS Domestic Continuous (Unconventional) Oil & Gas Assessments, 2000-Present

      Interactively explore assessment summary information for continuous (unconventional) assessments conducted at the USGS from 2000-2018. The assessment results data used to generate this visualization can be downloaded here in Excel Format.  These data represent all assessment results...

      Date published: September 1, 2017

      National Water Information System web interface (NWISweb)

      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.

      Date published: January 1, 2017

      Data used for assessing relationships between fish assemblages and acid-base chemistry in streams of the Great Smoky Mountains National Park, 1993-2014

      Fish community richness, density, and biomass for entire communities, Brook Trout, Rainbow Trout, and minnows, including site characteristics, and water chemistry (acid neutralizing capacity, pH, nitrate, sulfate, ammonia, calcium, and total aluminum) collected at least once and as many as 13 times at each of 52 stream sites during the same years that fish were inve

      Date published: November 29, 2016

      Tennessee Current Water Conditions

      See Current Water Conditions for Tennessee using our new interactive map. Here you can find information on Groundwater, Surface Water and Water Quality.

      Date published: September 26, 2016

      Memphis Area Groundwater-Level Network

      Groundwater Watch is a supplemental tool to NWISWeb and, as such, is able to provide additional benefits to the groundwater community. NWIS is the authoritative database for USGS groundwater data, and NWISWeb is the public interface for these groundwater data. This is information pertaining to the Memphis Area Groundwater-Level Network.

      Filter Total Items: 7
      Black and grey map of the contiguous 48 states shaded by the number of people using domestic wells per square kilometer (2010)
      April 23, 2020

      Domestic wells provide drinking water supply for approximately 40 million people in the United States. Knowing the location of these wells, and the populations they serve, is important for identifying heavily used aquifers, locations susceptible to contamination, and populations potentially impacted by poor-quality groundwater. 

      USGS
      August 22, 2018

      Flynn Creek crater is a 3.8 km diameter, 360-million-year-old impact structure located in north central Tennessee, and is an invaluable terrestrial analog for the study of impact cratering dynamics. The Flynn Creek Crater Sample Collection consists of over two thousand boxes of drill core from 18 drill holes in the crater’s central uplift, floor, and rim. 

      North Platte, Nebraska US Topo quadrangle: 2014
      September 26, 2016

      Network wells depicted on the Climate Response Network location map
      Note: Color shading in the table below indicates multiple wells that plot as a single point on the state location map above.
      Note: BLS = Water Level in Feet Below Land Surface, RVD = Water Level referenced to a vertical datum

      Hurricane Louisiana Coast
      September 14, 2016

      June 1 marks the beginning of hurricane season. Should storms arrive on the Louisiana coast, the people in coastal communities across the State, along with many Federal, State, and local agencies will need to know how the storms are affecting the coastal and low-lying areas.The USGS maintains an extensive network of coastal gages that provides critical time-sensitive water level.

      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.

      Filter Total Items: 35
      Publication Thumbnail
      Year Published: 2020

      The relation of geogenic contaminants to groundwater age, aquifer hydrologic position, water type, and redox conditions in Atlantic and Gulf Coastal Plain aquifers, eastern and south-central USA

      Groundwater age distributions developed from carbon-14 (14C), tritium (3H), and helium-4 (4He) concentrations, along with aquifer hydrologic position, water type, and redox conditions, were compared to geogenic contaminants of concern (GCOC) from 252 public-supply wells in six Atlantic and Gulf Coastal Plain unconsolidated-sediment aquifers....

      Degnan, James R.; Lindsey, Bruce D.; Levitt, Joseph Patrick; Szabo, Zoltan

      Publication Thumbnail
      Year Published: 2019

      Four major Holocene earthquakes on the Reelfoot fault recorded by sackungen in the New Madrid seismic zone, USA

      Three sequences of well-documented, major ~M7+ earthquakes (1811-1812 CE, ~1450 CE, and ~900 CE) in the New Madrid seismic zone, USA, contribute significantly to seismic hazard in the region. However, it is unknown whether this <550 yr recurrence interval has been constant throughout the Holocene given limited geomorphic evidence of prior...

      Gold, Ryan D.; Duross, Christopher; Delano, Jaime E.; Jibson, Randall W.; Briggs, Richard W.; Mahan, Shannon A.; Williams, Robert; Corbett, D. Reide

      Publication Thumbnail
      Year Published: 2018

      Coseismic sackungen in the New Madrid seismic zone, USA

      High‐resolution lidar reveals newly recognized evidence of strong shaking in the New Madrid seismic zone in the central United States. We mapped concentrations of sackungen (ridgetop spreading features) on bluffs along the eastern Mississippi River valley in northwestern Tennessee that likely form or are reactivated during large earthquakes. These...

      Delano, Jaime E.; Gold, Ryan D.; Briggs, Richard W.; Jibson, Randall W.

      Publication Thumbnail
      Year Published: 2017

      Continuity of the Reelfoot fault across the Cottonwood Grove and Ridgely faults of the New Madrid Seismic Zone

      Previous investigators have argued that the northwest-striking Reelfoot fault of northwest Tennessee and southeastern Missouri is segmented. One segment boundary is at the intersection of the northeast-striking Cottonwood Grove and Ridgely strike-slip faults with the Reelfoot fault. We use seismic reflection and geologic mapping to locate and...

      Greenwood, M.L.; Woolery, Edward W; Van Arsdale, R. B.; Stephenson, William J.; Patterson, Gary L.
      Greenwood, M.L., Woolery, E.W., Van Arsdale, R.B., Stephenson, W.J., and Patterson, G.L., 2016, Continuity of the Reelfoot Fault Across the Cottonwood Grove and Ridgely Faults of the New Madrid Seismic Zone, Bulletin Seismological Society of America, v. 106, n. 6, p. 2674–2685, doi: 10.1785/0120150290.

      Publication Thumbnail
      Year Published: 2016

      St. Louis area earthquake hazards mapping project; seismic and liquefaction hazard maps

      We present probabilistic and deterministic seismic and liquefaction hazard maps for the densely populated St. Louis metropolitan area that account for the expected effects of surficial geology on earthquake ground shaking. Hazard calculations were based on a map grid of 0.005°, or about every 500 m, and are thus higher in resolution than any...

      Cramer, Chris H.; Bauer, Robert A.; Chung, Jae-won; Rogers, David; Pierce, Larry; Voigt, Vicki; Mitchell, Brad; Gaunt, David; Williams, Robert; Hoffman, David; Hempen, Gregory L.; Steckel, Phyllis; Boyd, Oliver S.; Watkins, Connor M.; Tucker, Kathleen; McCallister, Natasha
      Cramer C.H., Bauer R.A., Chung J.-W., Rogers J.D., Pierce L., Voigt V., Mitchell B., Gaunt D., Williams R.A., Hoffman D., Hempen G.L., Steckel P.J., Boyd O.S., Watkins C.M., Tucker K., McCallister N.S. St. Louis area earthquake hazards mapping project; seismic and liquefaction hazard maps Seismological Research Letters, January, 2017, Vol. 88, Issue 1, pp. 206-223

      Publication Thumbnail
      Year Published: 2016

      Dense lower crust elevates long-term earthquake rates in the New Madrid seismic zone

      Knowledge of the local state of stress is critical in appraising intraplate seismic hazard. Inverting earthquake moment tensors, we demonstrate that principal stress directions in the New Madrid seismic zone (NMSZ) differ significantly from those in the surrounding region. Faults in the NMSZ that are incompatible with slip in the regional stress...

      Levandowski, William Brower; Boyd, Oliver S.; Ramirez-Guzman, Leonardo
      Levandowski, W., O. S. Boyd, and L. Ramirez-Guzmán (2016), Dense lower crust elevates long-term earthquake rates in the New Madrid seismic zone, Geophys. Res. Lett., 43, doi:10.1002/2016GL070175.

      Publication Thumbnail
      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.

      Publication Thumbnail
      Year Published: 2016

      Growth, survival, longevity, and population size of the Big Mouth Cave salamander (Gyrinophilus palleucus necturoides) from the type locality in Grundy County, Tennessee, USA

      Salamander species that live entirely in subterranean habitats have evolved adaptations that allow them to cope with perpetual darkness and limited energy resources. We conducted a 26-month mark–recapture study to better understand the individual growth and demography of a population of the Big Mouth Cave Salamander (Gyrinophilus palleucus...

      Niemiller, Matthew L.; Glorioso, Brad M.; Fenolio, Dante B.; Reynolds, R. Graham; Taylor, Steven J.; Miller, Brian T.
      Niemiller, M.L., Glorioso, B.M., Fenolio, D.B., Reynolds, R.G., Taylor, S.J., and Miller, B.T., 2016, Growth, survival, longevity, and population size of the Big Mouth Cave salamander (Gyrinophilus palleucus necturoides) from the type locality in Grundy County, Tennessee, USA: Copeia, v. 104, no. 1, p. 35-41, http://www.bioone.org/doi/full/10.1643/OT-14-197.

      Publication Thumbnail
      Year Published: 2015

      Ground motion-simulations of 1811-1812 New Madrid earthquakes, central United States

      We performed a suite of numerical simulations based on the 1811–1812 New Madrid seismic zone (NMSZ) earthquakes, which demonstrate the importance of 3D geologic structure and rupture directivity on the ground‐motion response throughout a broad region of the central United States (CUS) for these events. Our simulation set consists of 20...

      Ramirez-Guzman, L.; Graves, Robert; Olsen, Kim B.; Boyd, Oliver S.; Cramer, Chris H.; Hartzell, Stephen H.; Ni, Sidao; Somerville, Paul G.; Williams, Robert; Zhong, Jinquan

      Publication Thumbnail
      Year Published: 2015

      Crustal deformation in the New Madrid seismic zone and the role of postseismic processes

      Global Navigation Satellite System data across the New Madrid seismic zone (NMSZ) in the central United States over the period from 2000 through 2014 are analyzed and modeled with several deformation mechanisms including the following: (1) creep on subsurface dislocations, (2) postseismic frictional afterslip and viscoelastic relaxation from the...

      Boyd, Oliver S.; Robert Smalley, Jr; Zeng, Yuehua
      Boyd, O. S., R. Smalley Jr., and Y. Zeng (2015), Crustal deformation in the New Madrid seismic zone and the role of postseismic processes, J. Geophys. Res. Solid Earth, 120, doi:10.1002/2015JB012049.

      Publication Thumbnail
      Year Published: 2014

      Why the New Madrid earthquakes are M 7–8 and the Charleston earthquake is ∼M 7

      Estimates of magnitudes of large historical earthquakes are an essential input to and can seriously affect seismic‐hazard estimates. The earthquake‐intensity observations, modified Mercalli intensities (MMI), and assigned magnitudes Mof the 1811–1812 New Madrid events have been reinterpreted several times in the last decade and have...

      Cramer, Chris H.; Boyd, Oliver S.
      Cramer, C. H., and O. S. Boyd (2014), Why the New Madrid Earthquakes are M7–8 and the Charleston Earthquake is ~M7, Bull. Seis. Soc. Am., 104, 2884–2903, doi:10.1785/0120120257.

      Publication Thumbnail
      Year Published: 2013

      Workshop on New Madrid geodesy and the challenges of understanding intraplate earthquakes

      On March 4, 2011, 26 researchers gathered in Norwood, Massachusetts, for a workshop sponsored by the U.S. Geological Survey and FM Global to discuss geodesy in and around the New Madrid seismic zone (NMSZ) and its relation to earthquake hazard. The group addressed the challenge of reconciling current geodetic measurements, which show low present-...

      Boyd, Oliver; Calais, Eric; Langbein, John; Magistrale, Harold; Stein, Seth; Zoback, Mark
      Workshop on New Madrid geodesy and the challenges of understanding intraplate earthquakes; 2013; OFR; 2013-1004; Boyd, Oliver ; Calais, Eric ; Langbein, John ; Magistrale, Harold ; Stein, Seth ; Zoback, Mark

      Filter Total Items: 28
      July 9, 2020

      Image of the Week - Virtual Road Trip with Landsat

      Summer vacation plans changed for many in 2020. Whatever your plans, Landsat can take you on a virtual road trip. Landsat 8, in its sun-synchronous polar orbit, views every national park in the U.S. every 16 days and gathers more photographic data than the most ambitious of tourists.
       

      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.

      September 20, 2018

      Habitat Connectivity: Assessing Threats and IDing Conservation Actions

      An important conservation strategy for climate change is to enhance and maintain regional habitat connectivity for the long-term viability of wildlife populations. Modeling habitat connectivity for wildlife species often results in a mapped network of linkages between habitat patches. A critical next step is to determine which of those linkages are priorities for

      Conglomerates within the Sycamore Sand at Hammetts Crossing
      February 27, 2018

      Conglomerates, Sycamore Sand at Hammetts Crossing, Travis Cty, Texas

      Conglomerates within the Sycamore Sand at Hammetts Crossing, Travis County, Texas (photograph by Allan K. Clark, U.S. Geological Survey, February 27, 2018).
      U.S. Geological Survey Scientific Investigations Map 3418, https://doi.org/10.3133/sim3418

      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

      Panoramic view of the Blue Ridge (Virginia, North Carolina and Tennessee)
      October 3, 2012

      Blue Ridge of Virginia, North Carolina and Tennessee

      Panoramic view (~270 degrees) looking across the Blue Ridge of Virginia, North Carolina and Tennessee (from left to right).  The Valley and Ridge is in the distance (gap between mountains). 

      The Piedmont and Blue Ridge provinces extend from southeastern New York to Alabama and include parts of eleven states in the Eastern U.S. and part of Washington, D.C. Blue Ridge

      ...
      USGS boat crew prepares for a discharge measurement during May 2011 Memphis, Tennessee flooding
      May 4, 2011

      USGS boat crew prepares for a discharge measurement

      USGS boat crew prepares for a discharge measurement during May 2011 Memphis, Tennessee flooding

      video thumbnail: Tennessee National Wildlife Refuge Visitor's Center Site Dedication
      November 8, 2009

      Tennessee National Wildlife Refuge Visitor's Center Site Dedication

      Dedication ceremony for the construction of the new Tennessee National Wildlife Refuge Visitor's Center by U.S. Fish and Wildife Director Same Hamilton, and refuge manage John Taylor.

      Filter Total Items: 76
      TNMCorps Mapping Challenge: FireStations in TN
      May 12, 2021

      This challenge continues to move closer to the finish line!

      TNMCorps Mapping Challenge: FireStations in TN
      May 6, 2021

      With each passing week, the finish line for this challenge gets closer and closer. Back when this challenge was launched, approximately 900 points needed to be edited. Now, just under 300 points remain! Keep up the good work!  

      TNMCorps Mapping Challenge: City/Town Halls in KY & TN FINISHED
      April 29, 2021

      This challenge is now complete! Thank you to everyone who contributed! 

      TNMCorps Mapping Challenge: FireStations in TN
      April 29, 2021

      Another 100 edits came in for this challenge since last week - GREAT JOB!  

      TNMCorps Mapping Challenge: City/Town Halls in KY & TN
      April 22, 2021

      This challenge is SO CLOSE to being finished! See our spatial analyses for tips on remaining communities. 

      TNMCorps Mapping Challenge: FireStations in TN
      April 22, 2021

      Volunteers contributed over 200 edits towards this challenge since last week - EXCELLENT!  

      TNMCorps Mapping Challenge: City/Town Halls in KY & TN
      April 15, 2021

      This challenge is nearing completion with approximately 120 edits since last week - NICE WORK!  See our spatial overlay for tips on which communities may still remain. 

      TNMCorps Mapping Challenge: FireStations in TN
      April 15, 2021

      Volunteers made significant progress on this challenge with close to 170 edits since last week. This includes the removal of points representing entities that no longer exist. Thank you for helping to update The National Map!

      TNMCorps Mapping Challenge: City/Town Halls in KY & TN
      April 8, 2021

      This challenge saw some heavy lifting with over 130 edits since it was launched - NICE WORK!!  

      TNMCorps Mapping Challenge: FireStations in TN
      April 8, 2021

      This challenge is starting to pick up momentum! Volunteers have contributed over 40 edits since this challenge was lanuched - keep up the good work!  

      TNMCorps Mapping Challenge: City/Town Halls in KY & TN NEW
      April 1, 2021

      Here’s a new challenge for City / Town Halls in Kentucky and Tennessee!  

      TNMCorps Mapping Challenge: FireStations in TN NEW
      April 1, 2021

      TNMCorps mapping challenges continue in the east with another challenge for fire stations in Tennessee! This is an excellent challenge for Standard Editors with many unedited (i.e., red) points that need to be confirmed.

      Filter Total Items: 17