Unified Interior Regions


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

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Date published: January 1, 2009

Lower Mississippi River National Rivers and Streams Assessment

Short Title: Mississippi River NRSA

Project Chief: Billy Justus

Cooperator: U.S. Environmental Protection Agency

Project Time Frame: 2008 - 2009

The USGS Arkansas and Missouri Water Science Centers (WSC) are conducting a study for the U.S. Environmental...

Contacts: Billy G Justus
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TNMCorps Mapping Challenge: Cemeteries in Western TN as of 10/14/21

A before-and-after image showing the change in edits between 10/07/21 and 10/14/21. Volunteers edited over 200 points during this timeframe (public domain).

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Graph: Peak ground-motion variability for a magnitude 7.7 earthquake
July 30, 2015

Computer simulations of earthquake shaking, replicating the quakes that occurred in 1811-1812 in the New Madrid seismic zone (NMSZ), indicate that future large earthquakes there would produce major, prolonged ground shaking.

December 18, 2014

Secretary of the Interior Sally Jewell announced today that Interior’s Southeast Climate Science Center is awarding nearly $150,000 to its host university and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

June 25, 2014

On the one-year anniversary of President Obama’s Climate Action Plan, Secretary of the Interior Sally Jewell today released a new report showing that forests, wetlands and farms in the eastern United States naturally store 300 million tons of carbon a year (1,100 million tons of CO2 equivalent).

Lidar image showing the upper parts of the landslide that occurred in northwest Washington on March 22, 2014.
May 14, 2014

Want to know how elevation will benefit your state? The USGS National Geospatial Program is advancing the 3D Elevation Program, known as 3DEP, in response to the growing need for high-quality three-dimensional representations of the Nation’s natural and constructed features.

Map showing recent earthquakes in the New Madrid Seismic Zone
January 23, 2014

Earthquake activity in the New Madrid Seismic Zone in the central United States does not seem to be slowing down.  In a new study published in the journal "Science," seismologists Morgan Page and Susan Hough of the U.S. Geological Survey investigate whether current quakes in the region could be aftershocks of large earthquakes that occurred 200 years earlier.

July 15, 2013

Journalists are invited to view the airplane being used by the U.S. Geological Survey to study the magnetic field of the earth, which may help map locate shallow concealed faults associated with the New Madrid Seismic Zone.

July 9, 2013

Starting around July 10, and continuing for approximately one month, an airplane operating under contract to the U.S. Geological Survey will be making low-level flights over a 1400-square-mile area including Blytheville, Ark., Kennett, Mo., Piggott, Ark., and Qulin, Mo., along with other parts of southeastern Missouri, northeastern Arkansas, and western Tennessee. 

June 13, 2012

NASHVILLE, Tenn. — Spring streamflows throughout the state of Tennessee are some of the lowest on record, according to U.S. Geological Survey streamgages, which measure water levels, streamflow and rainfall throughout the state