Unified Interior Regions

Region 4: Mississippi Basin

Regions L2 Landing Page Tabs

Filter Total Items: 238
Date published: February 26, 2019
Status: Completed

August 2016 Louisiana Floods

Learn more about USGS flood activities related to the August 2016 Louisana Floods.

Date published: February 26, 2019
Status: Completed

2016 Southern Spring Floods

Learn more about USGS flood activities related to the 2016 Southern Spring Floods. These floods were caused by significant amounts of tropical moisture that was funneled through a narrow zone across East Texas, Louisiana, Arkansas, and Mississippi, creating severe flood conditions.

Date published: February 25, 2019
Status: Completed

June 2014 floods in South Dakota, Minnesota, and Iowa

Learn more about USGS flood activities related to the June 2014 Floods in South Dakota, Minnesota, and Iowa.

Date published: February 25, 2019
Status: Completed

May-June 2013 Midwest Floods

Learn more about USGS flood activities related to the May-June 2013 Midwest Floods.

Date published: February 25, 2019
Status: Completed

April-May 2013 Midwest Floods

Learn more about USGS flood activities related to the April-May 2013 Midwest Floods caused by heavy rainfall and late snow-melt in six states.

Date published: February 25, 2019
Status: Completed

Summer 2011 Missouri River Basin flood

Learn more about USGS flood activities related to the 2011 Missouri River Basin Flood resulting from higher-than-average snowmelt runoff combined with heavy spring rains.

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 Louisiana flood

Learn more about USGS flood activities related to the May 2011 flood in Louisiana, including additional real-time monitoring for the Morganza and Bonnet Carre Spillways which were opened to release floodwaters into the Mississippi River.

Date published: February 25, 2019
Status: Completed

April 2011 Arkansas Flood

Learn more about USGS flood activities related to the April 2011 Arkansas Flood.

Date published: February 24, 2019
Status: Active

Urban Waters Federal Partnership—Middle Blue River Basin (Kansas City, Mo.)

Reconnecting people and water is an increasingly important goal in many urban areas. Parks, urban trails, boat ramps, and urban agriculture all are ways that an urban population can interact with nature and improve quality of life.  USGS is participating in gathering the information that will make these projects possible.

Date published: January 29, 2019
Status: Completed

Hurricane Katrina - Documentation of Coastal Change

Aerial video, still photography, and laser altimetry surveys show the nature, magnitude, and spatial variability of coastal changes such as beach erosion, overwash deposition, and island breaching.

Date published: January 28, 2019
Status: Completed

Hurricane Katrina - Before and After Photo Comparisons

Before and after photos from the Chandeleur Islands, Dauphin Island, and Mississippi show coastal change caused by Hurricane Katrina.

Filter Total Items: 70
Date published: June 21, 2018

Louisiana Fact Sheets by Parish

Fact Sheets for Louisiana by Parish.

Date published: January 19, 2018

Oblique Aerial Photography Viewer

Obique photos offer a unique perspective of the coast. Features such as beach erosion or accretion, dune erosion and overwash can all be clearly characterized in this imagery. It also documents coastal infrastructure, as well as the damage that infrastructure may incur as the result of an impacting hurricane. 

Date published: January 1, 2018

Nitrapyrin, 6-CPA, and herbicide concentrations in agricultural soils, subsurface drains, and corresponding streams in the Midwestern US

Nitrapyrin is a nitrification inhibitor that is co-applied with N-fertilizer in agroecosystems. Over the course of one year (March 2016 to June 2017), 192 water samples from seven streams across Iowa and Illinois were analyzed for nitrapyrin, its degradate 6-chloropicolinic acid (6-CPA), and three widely used herbicides acetochlor, atrazine, and metolachlor. Additional environme

Date published: January 1, 2018

Concentrations of Major and Trace Elements in Streambed and Floodplain Sediment along the Middle Big River and Tributaries in the Southeast Missouri Barite District and in Quality-Assurance Samples, 2012-15

This U.S. Geological Survey (USGS) Data Release contains locations and concentrations of metals in various size fractions in floodplain-core, streambed-sediment samples, and sediment deposited on the flood plain from the December 2015 flood and underlying soils collected from along the Middle Big River and tributaries in the Southeast Missouri Barite District from 2012 to 2015. All sample

Date published: December 11, 2017

Gulf of Mexico Dashboard

The USGS Southeast Regional Office has funded a cross-center collaboration between the Wetland and Aquatic Research Center and the Texas Water Science Center for the development of the Gulf of Mexico Water Dashboard. 

Date published: October 31, 2017

Guide to the Plants of Louisiana

This guide to the vascular plants of Louisiana includes a database of plant characters, a search engine and plant images. Photographs include images of leaves, fruit, flower, stem, bark and other key identification features. Information about plants can be accessed by searching plant lists either by scientific name or common name.

Date published: October 31, 2017

Current Conditions for Arkansas - Streamflow

To view current streamflow conditions for Arkansas click here

Date published: October 31, 2017

Current Conditions for Arkansas: Water Quality

To view current conditions for Arkansas Water Quality click here.

Date published: October 31, 2017

Arkansas Groundwater-Quality Network

To see information on the Arkansas Groundwater-Quality Network click here.

Date published: October 4, 2017

Operation Basement: Missouri Precambrian Sample Database

In 1968, the Missouri Geological Survey (MGS) established the Operation Basement program to address three objectives: a) to obtain drill hole and underground mining data relative to the structure and composition of the buried Precambrian basement; b) to expand mapping in the Precambrian outcrop area and conduct research related to Precambrian geology and mineral resources; and c%2

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.

Filter Total Items: 4,580
Publication Thumbnail
Year Published: 2021

Decision analysis of barrier placement and targeted removal to control invasive carp in the Tennessee River Basin

Controlling range expansion of invasive carp (specifically Hypophthalmichthys spp.) on the Tennessee River is important to conserve the ecological and economic benefits provided by the river. We collaborated with State and Federal agencies (the stakeholder group) to develop a decision framework and decision support model to evaluate strategies to...

van der Burg, Max Post; Smith, David R.; Cupp, Aaron R.; Rogers, Mark W.; Chapman, Duane C.
Post van der Burg, M., Smith, D.R., Cupp, A.R., Rogers, M.W., and Chapman, D.C., 2021, Decision analysis of barrier placement and targeted removal to control invasive carp in the Tennessee River Basin: U.S. Geological Survey Open-File Report 2021–1068, 18 p., https://doi.org/10.3133/ofr20211068.

Publication Thumbnail
Year Published: 2021

Seasonal controls on sediment delivery and hydrodynamics in a vegetated tidally influenced interdistributary island

River deltas are maintained by a continuous supply of terrestrial sediments that provide critical land building material to help sustain and protect vulnerable ecological communities and serve as natural storm protection barriers. Local hydrodynamics are important in determining the degree to which fluvial sediments are removed from the water...

Styles, Richard; Snedden, Gregg; Smith, S. Jarrell; Bryant, Duncan B.; Boyd, Brandon M.; Gailani, Joseph Z.; Couvillion, Brady; Race, Edward

Publication Thumbnail
Year Published: 2021

Effects of climate and land-use change on thermal springs recharge—A system-based coupled surface-water and groundwater-flow model for Hot Springs National Park, Arkansas

A three-dimensional hydrogeologic framework of the Hot Springs anticlinorium beneath Hot Springs National Park, Arkansas, was constructed to represent the complex hydrogeology of the park and surrounding areas to depths exceeding 9,000 feet below ground surface. The framework, composed of 6 rock formations and 1 vertical fault emplaced beneath the...

Hart, Rheannon M.; Ikard, Scott J.; Hays, Phillip D.; Clark, Brian R.
Hart, R.M., Ikard, S.J., Hays, P.D., and Clark, B.R., 2021, Effects of climate and land-use change on thermal springs recharge—A system-based coupled surface-water and groundwater-flow model for Hot Springs National Park, Arkansas: U.S. Geological Survey Scientific Investigations Report 2021–5045, 38 p., https://doi.org/10.3133/sir20215045.

Publication Thumbnail
Year Published: 2021

Abundance of Gulf Coast Waterdogs (Necturus beyeri) along Bayou Lacombe, Saint Tammany Parish, Louisiana

Few ecological studies have been conducted on Gulf Coast Waterdogs (Necturus beyeri), and published studies have focused on relatively small stream sections of 125 m to 1.75 km. In 2015, we sampled 25 sites along a 13.4-km stretch of Bayou Lacombe (Saint Tammany Parish, Louisiana, USA) to better understand factors that may influence the...

Glorioso, Brad; Waddle, Hardin; Muse, Lindy J.; Godfrey, Sidney T

Publication Thumbnail
Year Published: 2021

Spatial ecology of invasive Burmese pythons in southwestern Florida

Understanding the spatial ecology of an invasive species is critical for designing effective control programs. Determining and quantifying home range estimates and habitat associations can streamline targeted removal efforts for wide-ranging, cryptic animals. The Burmese python (Python bivittatus) is a large-bodied constrictor snake with an...

Bartoszek, Ian A.; Smith, Brian J.; Reed, Robert; Hart, Kristen

Publication Thumbnail
Year Published: 2021

Magnitude and frequency of floods in the alluvial plain of the lower Mississippi River, 2017

Annual exceedance probability flows at gaged locations and regional regression equations used to estimate annual exceedance probability flows at ungaged locations were developed by the U.S. Geological Survey, in cooperation with the Mississippi Department of Transportation, to improve flood-frequency estimates at rural streams in the alluvial...

Anderson, Brandon T.
Anderson, B.T., 2021, Magnitude and frequency of floods in the alluvial plain of the lower Mississippi River, 2017: U.S. Geological Survey Scientific Investigations Report 2021–5046, 15 p., https://doi.org/10.3133/sir20215046.

Publication Thumbnail
Year Published: 2021

Fluvial Egg Drift Simulator (FluEgg) user’s manual

The Fluvial Egg Drift Simulator (FluEgg) was developed to simulate the transport and dispersion of invasive carp eggs and larvae in a river. FluEgg currently (2020) supports modeling of bighead carp (Hypophthalmichthys nobilis), silver carp (H. molitrix), and grass carp (Ctenopharyngodon idella), with the planned addition of black carp (...

Domanski, Marian M.; LeRoy, Jessica Z.; Berutti, Michael; Jackson, P. Ryan
Domanski, M.M., LeRoy, J.Z., Berutti, M., and Jackson, P.R., 2021, Fluvial Egg Drift Simulator (FluEgg) user’s manual: U.S. Geological Survey Open-File Report 2021–1052, 30 p., https://doi.org/10.3133/ofr20211052.

Publication Thumbnail
Year Published: 2021

Using systems thinking to inform management of imperiled species: A case study with sea turtles

Management of imperiled species facing spatiotemporally dynamic threats is difficult. Systems thinking can inform their management by quantifying the impacts that they face. We apply systems thinking to the Northern Gulf of Mexico (NGM) loggerhead (Caretta caretta) Recovery Unit (RU), one of the smallest subpopulations of loggerheads...

Silver-Gorges, Ian; Ceriani, Simona A.; Ware, Matthew; Lamb, Megan; Lamont, Margaret; Becker, Janice; Carthy, Raymond; Matechik, Chris; Mitchell, Joseph C.; Pruner, Raya; Reynolds, Mike; Smith, Bradley; Snyder, Caitlyn; Fuentes, Mariana M. P. B.

Publication Thumbnail
Year Published: 2021

Water resources of St. Landry Parish, Louisiana

Information concerning the availability, use, and quality of water in St. Landry Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. In 2014, about 116.75 million gallons...

Lindaman, Maxwell A.; White, Vincent E.
Lindaman, M.A.., and White, V.E., 2021, Water resources of St. Landry Parish, Louisiana: U.S. Geological Survey Fact Sheet 2021–3026, 6 p., https://doi.org/10.3133/fs20213026.

Publication Thumbnail
Year Published: 2021

Use of dissolved oxygen monitoring to evaluate phosphorus loading in Connecticut streams, 2015–18

The Connecticut Department of Energy and Environmental Protection (CT DEEP) has developed an interim phosphorus reduction strategy to establish water-quality-based phosphorus limits in nontidal freshwaters for industrial and municipal water pollution control facilities. A recommendation in the strategy included the addition of diurnal dissolved...

Izbicki, Brittney; Morrison, Jonathan
Izbicki, B., and Morrison, J., 2021, Use of dissolved oxygen monitoring to evaluate phosphorus loading in Connecticut streams, 2015–18: U.S. Geological Survey Scientific Investigations Report 2021–5024, 25 p., https://doi.org/10.3133/sir20215024.

Publication Thumbnail
Year Published: 2021

Synthetic aperture radar and optical mapping used to monitor change and replacement of Phragmites australis marsh in the Lower Mississippi River Delta, Louisiana

Synthetic aperture radar (SAR) mapping of density as an enhancement of Phragmites australis optical live fractional cover (LFC) mapping was carried out in the lower Mississippi Delta during 2016 to 2019. Also, as part of the study, the replacement of P. australis with elephant-ear was analyzed. To that end, yearly maps from 2016 to 2019 of L-band...

Ramsey III, Elijah W.; Rangoonwala, Amina
Ramsey, E.W., III, and Rangoonwala, A., 2021, Synthetic aperture radar and optical mapping used to monitor change and replacement of Phragmites australis marsh in the lower Mississippi River Delta, Louisiana: U.S. Geological Survey Open-File Report 2021–1046, 19 p., https://doi.org/10.3133/ofr20211046.

Publication Thumbnail
Year Published: 2021

Improving species status assessments under the U.S. Endangered Species Act and implications for multispecies conservation challenges worldwide

Despite its successes, the U.S. Endangered Species Act (ESA) has proven challenging to implement due to funding limitations, workload backlog, and other problems. As threats to species survival intensify and as more species come under threat, the need for the ESA and similar conservation laws and policies in other countries to function efficiently...

Noss, Reed; Cartwright, Jennifer M.; Estes, Dwayne; Witsell, Theo; Elliott, Gregg; Adams, Daniel S.; Albrecht, Matthew A.; Boyles, Ryan; Comer, Patrick; Doffitt, Chris; Hill, JoVonn G.; Hunter, William C.; Knapp, Wesley M.; Marshall, Mike; Singhurst, Jason R.; Tracey, Christopher; Walck, Jeffrey L.; Weakley, Alan

Filter Total Items: 216
Behavioral Toxicology Laboratory -- Columbia, Missouri
April 16, 2018

Behavioral Toxicology Laboratory -- Columbia, Missouri

Behavioral Toxicology Laboratory -- Columbia, Missouri. Swimming paths of control (left) and copper (right) exposed fish

Swimming paths of control (left) and copper (right) exposed fish demonstrate changes in swimming behavior
April 16, 2018

Swimming paths of control (left) and copper (right) exposed fish

Behavioral Toxicology Laboratory — Columbia, Missouri. Swimming paths of control (left) and copper (right) exposed fish demonstrate changes in swimming behavior detected following exposure to metals. Such changes can impact ability of fish to survive.

Molecular Devices ImageXpress† High-Content Imaging System
April 13, 2018

Molecular Devices ImageXpress† High-Content Imaging System

High-Content Screening Laboratory — Columbia, Missouri. Molecular Devices ImageXpress High-Content Imaging System

The zebrafish developmental cardiovascular toxicity high-content screening assay uses a 384-well plate format
April 13, 2018

TZebrafish developmental cardiovascular toxicity high-content screen

The zebrafish developmental cardiovascular toxicity high-content screening assay uses a 384-well plate format to maximize number of treatments and replicates possible on each plate.

Ozark Spring - a perennial spring in Phelps County, MO
February 25, 2018

Ozark Spring - a perennial spring in Phelps County, Missouri

Ozark Spring is a perennial spring in northern Phelps County, Missouri. It generates a rill that flows into Spring Creek which flows into the Gasconade River. It provides year-round water to livestock in the area.

Asian carp removal in Missouri
February 23, 2018

Asian Carp Removal in Missouri

In 2018, USGS and partners completed an incredible feat against a harmful aquatic invasive species when over 240,000 pounds of invasive Silver Carp and Bighead Carp were removed from Creve Coeur Lake in Maryland Heights, Missouri.

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

A perspective model of the morphology and geologic framework near Petit Bois Island showing the relationships between seafloor f
December 31, 2017

Petis Bois model

A perspective model of the morphology and geologic framework near Petit Bois Island showing the relationships between seafloor features and the subsurface. The barrier islands rest on the island plaftorm. Petis Bois Pass and offshore shoals are clearly visible from the acoustic surveys. The bathymetry, sidescan sonar, and sediment cores provide information about the extent

...
Cedar Rapids
December 31, 2017

Greg Delzer Talking with the Local Press Regarding the AEM Flight Plan

USGS Scientist, Greg Delzer, talking with the local press regarding the AEM flight plan and details on what USGS and others will be collecting and analyzing.

Cedar Rapids
December 31, 2017

RESOLVE bird used to collect airborne electromagnetic data

USGS team of scientists were on site before the survey to help answer questions and go over last minute flight and data collection details. (Photo includes individuals from USGS: Iowa/Illinois Water Science Center, Dakota Water Science Center, Denver Crustal Geophysics Group, Office of Communication, and Branch of Geophysics)

Cedar Rapids
December 31, 2017

Pilot and Crew Discussing Flight Plan for collecting AEM Data

Helicopter pilot and crew discussing flight plan and data collection before lifting off.

Cedar Rapids
December 31, 2017

Helicopter Lifting Off to Start a Data Collection Run for EM Data

Helicopter lifting off to start a data collection run.

Filter Total Items: 255
Hurricane Harvey flood-inundation map of the West Fork San Jacinto River
July 9, 2018

Nineteen inundation maps and detailed flood information from Hurricane Harvey are now available from the U.S. Geological Survey, in cooperation with the Federal Emergency Management Agency. Hurricane Harvey was the most significant rainfall event in U.S. history, both in scope and peak rainfall amounts, since records began in the 1880s.

Image shows a drill rig and vehicles near a road at dawn
June 22, 2018

The Eagle Ford Group of Texas contains estimated means of 8.5 billion barrels of oil, 66 trillion cubic feet of natural gas, and 1.9 billion barrels of natural gas liquids, according to a new assessment by the U.S. Geological Survey. This estimate consists of undiscovered, technically recoverable resources in continuous accumulations.

Image shows a screenshot of the Mid-Continent Rift Story Map
January 25, 2018

The first great geologic expeditions of the United States set off in the mid-1800s, equipped with mules, rifles, and early scientific instruments. Their goal: to uncover the great mineral wealth of the United States and learn about its earliest geologic history.

Photo of a young girl drinking water, which likely originated from groundwater sources. 
December 7, 2017

A regional assessment of untreated groundwater in the Cambrian-Ordovician aquifer system, which includes parts of Minnesota, Wisconsin, Michigan, Iowa, Illinois, Missouri and Indiana, is now available from the U.S. Geological Survey.

Exterior of a municipal water pumping station
December 6, 2017

Oxygen levels, dissolved minerals among factors responsible for high concentrations of radium in untreated water from aquifer that underlies six states

Stan Musial bridge in St. Louis, Missouri
October 5, 2017

A new assessment of channel bed erosion near 13 highway bridges in the greater St. Louis, Missouri, area is now available in an online report from the U.S. Geological Survey, produced in cooperation with the Missouri Department of Transportation.

USGS: Science for a changing world
August 23, 2017

A non-native insect infestation may not be the only factor involved in the ongoing die-back of a marsh grass in the Mississippi River’s “bird foot delta,” the ecologically and economically important part of coastal Louisiana where the river meets the Gulf of Mexico.

Filter Total Items: 50