Unified Interior Regions

Region 4: Mississippi Basin

Regions L2 Landing Page Tabs

Filter Total Items: 237
Date published: February 9, 2009

Preliminary Characterization of Thermal Waters East of Hot Springs National Park - Arkansas

Short Title: Hot Springs Thermal Study

Project Chief: Tim Kresse

Cooperators: Arkansas State Highway and Transportation Department

Project Time Frame: 2007 - 2009

Established in 1832 to preserve 47 hot springs flowing from of Hot Springs Mountain, Hot Springs National Park (HSNP) is the oldest National Park in the...

Contacts: Phillip D Hays
Date published: January 21, 2009

Digital Hydrogeologic Surface and Thickness of the Mississippi Embayment Regional Aquifer Study (MERAS)

Short Title: MERAS Framework

Project Chief: Rheannon Hart

Cooperator: U.S. Geological Survey Office of Ground-Water Resources Program

Project Time Frame: January 2006 - 2009

A hydrogeologic framework for a ground-water flow model is under development as part...

Contacts: Rheannon M Hart
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
Date published: September 1, 2008

Analysis of Chloride Data in the Alluvial Aquifer of Southeastern Arkansas

Short Title: Southeastern Arkansas Chloride Study
Project Chief: Brian Clark
Cooperator: Boeuf-Tensas Regional Irrigation Water Distribution District
Project Time Frame: July 2007 - September 2008

The Mississippi River Valley alluvial aquifer is one of the highest use aquifer systems...

Contacts: Brian R Clark
Date published: January 1, 2008

Water Quality of Potential Reference Lakes in Two Level-Three Ecoregions of Arkansas

Short Title: Reference Lakes

Project Chief: Billy Justus

Cooperators: Arkansas Department of Environmental Quality and U. S. Environmental Protection Agency

Project Time Frame: 2007 - 2008

The Arkansas Department of Environmental Quality has classified all lakes within Arkansas into five classifications...

Contacts: Billy G Justus
Date published: January 1, 2001
Status: Active

Water Use in Louisiana

The U.S. Geological Survey (USGS), in cooperation with the Louisiana Department of Transportation and Development (DOTD), has collected and published information on water withdrawals and use on a 5-year basis since 1960. The reports present information on withdrawals from ground- and surface-water sources for use in water supply, industry, power generation, rural domestic, livestock,...

Date published: September 15, 2000

East Baton Rouge Parish Hurricane Response Map

In the event of a hurricane, the appropriate response could save your life. This “East Baton Rouge Parish Hurricane Response Map” is a tool that can be useful in making decisions pertaining to evacuation and safety. IF LOCAL AUTHORITIES RECOMMEND EVACUATION, YOU SHOULD LEAVE--via major evacuation routes shown in red. Louisiana State Police Troop (A) headquarters can assist you in the most...

Date published: January 1, 1999

Mississippi Delta Management Systems Evaluation Areas (MDMSEA)

The Mississippi Delta Management Systems Evaluation Areas (MDMSEA) Project began in 1995 with two purposes: 1) to assess how agricultural activities affect water quality; and 2) to evaluate Best Management Practices (BMPs) that mitigate agricultural nonpoint source pollution. The project is located in the northwestern portion of Mississippi, an area of intense agriculture referred to as the...

Date published: September 1, 1977
Status: Active

Arkansas Water Use Program

In 1977, the Congress of the United States recognized the need for uniform, current, and reliable information on water use and directed the U.S. Geological Survey to establish a National Water-Use Information Program (NWUIP) to complement the Survey's data on the availability and quality of the Nations water resources. Since 1985 site-specific water-use data for several categories have been...

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Year Published: 2020

Physical characteristics and simulated transport of pallid sturgeon and shovelnose sturgeon eggs

The imperiled pallid sturgeon (Scaphirhynchus albus) and closely related, but more common, shovelnose sturgeon (S. platorynchus) are believed to broadcast adhesive, demersal eggs in the current and over coarse substrate in turbid rivers of the North American midcontinent. It has been hypothesized that eggs settle immediately following...

Chojnacki, Kimberly; Erwin, Susannah O.; George, Amy E.; Candrl, James; Jacobson, Robert B.; Delonay, Aaron J.

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Year Published: 2020

An overview of agent-based models in plant biology and ecology

Agent-based modeling (ABM) has become an established methodology in many areas of biology, ranging from the cellular to the ecological population and community levels. In plant science, two different scales have predominated in their use of ABM. One is the scale of populations and communities, through the modeling of collections of agents...

Zhang, Bo; DeAngelis, Donald L.

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Year Published: 2020

A 'weight of evidence' approach to evaluating structural equation models

It is possible that model selection has been the most researched and most discussed topic in the history of both statistics and structural equation modeling (SEM). The reason for this is because selecting one model for interpretive use from amongst many possible models is both essential and difficult. The published protocols and advice for model...

Grace, James

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Year Published: 2020

Structural equation modeling

This chapter introduces background and historical information on how structural equation modeling (SEM) came to be developed. Then, the main differences between SEM and earlier multivariate methods are explained. The chapter describes three main applications of SEM: path analysis, factor analysis, and hybrid models. Some computer programs are...

Miller, Matt; Tasic, Ivana; Lyons, Torrey; Ewing, Reid; Grace, James B.

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Year Published: 2020

Louisiana Adaptive Management Status and Improvement Report: Vision and Recommendations

As part of the process to increase implementation of adaptive management for ecosystem-based coastal restoration within Louisiana, we aim for this report to be broadly applicable across planning processes as well as funding and implementing entities. It compiles technical knowledge and guidance summarized as key findings through the text which...

Boshart, Bill; Crutcher, Morgan; Freeman, Angelina; Haywood, Edward; Khalil, Syed M.; Langlois, Summer; Lee, Darin L.; Lindquist, David; McGinnis, Tommy E.; Pahl, James; Parsons-Richards, Carol; Plitsch, Erin; Raynie, Rick; Routon, Robert; Sharp, Leigh Anne; Troutman, John; Villarrubia, Chuck; Folse, Todd; Graugnard, Alyson; Hawes, Anne; Joffrion, Russ; Leblanc, Wes; Lezina, Brian; Pahl, Jim; White, Jody; Conzelmann, Craig; Hijuelos, Ann; Piazza, Sarai; Spear, Kathryn A.; Steyer, Gregory D.; Regalado, Nanciann; Tirpak, John M.; Schupp, Courtney; Carle, Melissa; Daly, Jaclyn; Eckhardt, Nicolas; Fellas, Christy; Fougeres, Erin M.; Heverly, Stephen; Horstman, Stacey; Kroll, Jason; Landry, Mel; Schroeder, Barbara A.; Weissberger, Eric; Wissman, Sara; Grayson, Treda; Taylor, Patricia; Wiegand, Danny; Defley, Mark; Kolic, Paulina; Bienn, Harris; Carruthers, Tim J.B.; Dausman, Alyssa; Grace, Alaina; Hemmerling, Scott; Jerabek, Andrea; White, Eric; Clark, Ryan; McHugh, Coleen; Moss, Leland C; Ramatchandirane, Cyndhia; Wold, Amy

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Year Published: 2020

Uptake and toxicity of clothianidin to monarch butterflies from milkweed consumption

Recent concern for the adverse effects from neonicotinoid insecticides has centered on risk for insect pollinators in general and bees specifically. However, natural resource managers are also concerned about the risk of neonicotinoids to conservation efforts for the monarch butterfly (Danaus plexippus) and need additional data to help estimate...

Bargar, Timothy A.; Hladik, Michelle; Daniels, Jaret C.

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Year Published: 2020

Potential impacts of future urbanization and sea level rise on Florida’s natural resources

As urban development continues to encroach into natural systems, these ecosystems experience increasing degradation to their form and function. Losses in biodiversity and ecosystem function are further compounded by changing climatic conditions. The State of Florida is known for its biodiversity but has experienced declines in species populations...

Romanach, Stephanie; Benscoter, Allison; Haider, Saira

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Year Published: 2020

Predicting barrier island habitats and oyster and seagrass habitat suitability for various restoration measures and future conditions for Dauphin Island, Alabama

Barrier islands, such as Dauphin Island, Alabama, provide numerous invaluable ecosystem services including storm damage reduction and erosion control to the mainland, habitat for fish and wildlife, carbon sequestration in marshes, water catchment and purification, recreation, and tourism. These islands are dynamic environments that are gradually...

Enwright, Nicholas M.; Wang, Hongqing; Dalyander, P. Soupy; Elizabeth Godsey
Enwright, N.M., Wang, H., Dalyander, P.S., and Godsey, E., eds., 2020, Predicting barrier island habitats and oyster and seagrass habitat suitability for various restoration measures and future conditions for Dauphin Island, Alabama: U.S. Geological Survey Open-File Report 2020–1003, 99 p., https://doi.org/10.3133/ofr20201003.

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Year Published: 2020

Effect of stressors on the carrying capacity of spatially distributed metapopulations

Stressors such as antibiotics, herbicides, and pollutants are becoming increasingly common in the environment. The effects of stressors on populations are typically studied in homogeneous, nonspatial settings. However, most populations in nature are spatially distributed over environmentally heterogeneous landscapes with spatially restricted...

Zhang, Bo; DeAngelis, Don; Ni, Wei-Ming; Wang, Yuanshi; Zhai, Lu; Kula, Alex; Xu, Shuang; Van Dyken, J. David

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Year Published: 2020

Changing suspended sediment in United States rivers and streams: Linking sediment trends to changes in land use/cover, hydrology and climate

Sediment is one of the leading pollutants in rivers and streams across the United States (US) and the world. Between 1992 and 2012, concentrations of annual mean suspended sediment decreased at over half of the 137 stream sites assessed across the contiguous US. Increases occurred at less than 25 % of the sites, and the direction of change was...

Murphy, Jennifer C.

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Year Published: 2020

Legacy and current‐use contaminants in sediments alter macroinvertebrate communities in southeastern US Streams

Sediment contamination of freshwater streams in urban areas is a recognized and growing concern. As a part of a comprehensive regional stream‐quality assessment, stream‐bed sediment was sampled from streams spanning a gradient of urban intensity in the Piedmont ecoregion of the southeastern United States. We evaluated relations between a broad...

Moran, Patrick W.; Kemble, Nile E.; Waite, Ian R.; Mahler, Barbara; Nowell, Lisa H.; Van Metre, Peter C.

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Year Published: 2020

Sea turtle conservation: Priorities for environmental education efforts

All five species of sea turtle that occur in Florida are in danger of extinction.  Many of the reasons these turtles are declining are a result of people’s actions on beaches and in shallow waters. Environmental education is needed to increase awareness and appreciation for sea turtles, and to teach about the potential harmful impacts human...

Swindall, Jessica E.; Ober, Holly K.; Lamont, Margaret; Carthy, Raymond R.

Filter Total Items: 253
USGS
May 14, 2004

America’s rivers and streams are generally suitable for irrigation, supplying drinking water, and home and recreational uses. However, in areas with significant agricultural and urban development, the quality of our nation’s water resources has been degraded by contaminants such as pesticides, nutrients, and gasoline-related compounds.

USGS science for a changing world logo
April 1, 2004

A new map from the U.S. Geological Survey and the Central United States Earthquake Consortium shows that Central States, including Arkansas, Tennessee, Missouri, Kentucky and Indiana are among the most seismically active states east of the Rocky Mountains. More than 800 earthquakes are cataloged on the map that depicts the locations of earthquakes large enough to be felt, since 1699.

USGS
April 1, 2004

A new map from the U.S. Geological Survey and the Central United States Earthquake Consortium shows that Central States, including Arkansas, Tennessee, Missouri, Kentucky and Indiana are among the most seismically active states east of the Rocky Mountains. More than 800 earthquakes are cataloged on the map that depicts the locations of earthquakes large enough to be felt, since 1699.

USGS science for a changing world logo
October 8, 2003

Included this month:

Hurricane Isabel Makes Her Mark on the North Carolina Coast

Mayans in the Everglades?

Submerged Ice Bridge Reveals Ancient Secrets About Alaska

America’s Deepest Coral Reef

Young Tortises on Mojave’s Menu

Measuring Floods From A Distance

Is the World’s Fuel Tank on Empty?

USGS
October 7, 2003

U.S. Geological Survey (USGS) researchers investigating 51 streams in nine Midwestern States found low levels of the herbicide glyphosate in 36 percent of the samples tested, and found its degradation product in 69 percent of the samples tested. Antibiotics were found in few samples.

USGS
December 20, 2001

The U.S. Geological Survey has named Dr. Michael J. Mac as the new Director of the Columbia Environmental Research Center (CERC) in Columbia, Mo.

USGS science for a changing world logo
October 18, 2001

The U.S. Geological Survey (USGS) is participating in nine of the 14 public workshops scheduled by the U.S. Army Corps of Engineers (COE) this fall. The Corps of Engineers is conducting the workshops and a series of hearings to receive public comment on their recently released Revised Draft Environmental Impact Statement to the Master Water Control Manual for the Missouri River system.

USGS
October 8, 2001

Scientists from the U.S. Geological Survey (USGS) in Madison, Wisc., confirmed today that five dead crows found in the St. Louis, Mo., area tested positive for the West Nile Virus. On Thursday, USGS biologists announced that a dead blue jay, found near El Dorado, Ark., also tested positive for the virus. 

USGS
September 5, 2001

Scientists from the U.S. Geological Survey (USGS) in Madison, Wisc., said today that two dead crows, found in the Chicago area tested positive for the West Nile Virus. Last week, dead crows found near Milwaukee also tested positive for the virus. So far this year, West Nile Virus has been identified in 20 states, the District of Columbia and in southern Ontario.

USGS
June 27, 2000

A minor earthquake, preliminary magnitude 3.9 according to the U.S. Geological Survey (USGS), occurred in the northern part of Arkansas at 9:29 p.m.

USGS
November 1, 1999

More than 100 scientists will converge on the Cajundome in Lafayette, La., Nov. 2-4 to share the latest technologies used in studying everything from hurricanes in the Atlantic and Gulf of Mexico to grizzly bears in Yellowstone National Park. They are participants in the U.S. Geological Survey’s symposium, "BioGeo99: Applications of Geospatial Technology to Biological Sciences."

USGS
September 17, 1999

Wildfires have long played a key role in structuring ecosystems and plant communities in the southeastern United States. From the coastal prairie of Texas and Louisiana to the marshes and pinelands of Florida, many native species have adapted to a natural regime of frequent wildfire caused by lightning strikes.