SUB-BASIN PROFILE

Lower Mississippi River Sub-basin

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The Lower Mississippi River Basin is a crucial and dynamic region in the United States, extending from Cairo, Illinois, to the Gulf of Mexico. Here’s an overview:

Lower Mississippi River Basin
Mississippi Delta, Courtesy of USGS Earth Resources Observation and Science (EROS) Center.

Geography

Area: The basin covers parts of several states, including Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.

Length: The Lower Mississippi River flows approximately 990 miles from its confluence with the Ohio River at Cairo, Illinois, to the Gulf of Mexico.

Landscape: The region features a mix of alluvial plains, loessal bluffs, and coastal wetlands.

Key Features

Navigation: The Lower Mississippi is one of the most heavily traveled waterways in the United States, crucial for transporting agricultural and industrial goods. Unlike the upper sections, it has no locks or dams, but it is managed with levees and dikes to control flooding and maintain a navigable channel.

Flood Control: The Mississippi River and Tributaries Project includes levees, floodways, and spillways to manage flood risks and protect communities.

Ecosystems: The basin supports diverse ecosystems, including wetlands, bottomland hardwood forests, and a variety of aquatic habitats. These areas are vital for wildlife and provide important ecological services.

Uses

Transportation: The river is a major transportation route, supporting a significant portion of the U.S. economy by moving goods such as grain, coal, and petroleum.

Agriculture: The fertile floodplains are used extensively for agriculture, producing crops like cotton, soybeans, and rice.

Recreation: The basin offers numerous recreational opportunities, including fishing, boating, and wildlife observation.

Water Supply: It provides water for millions of people and supports various industrial activities.

Challenges

Environmental Impact: The basin faces issues such as nutrient pollution from agricultural runoff, leading to hypoxia in the Gulf of Mexico. Habitat loss and water quality degradation are also significant concerns.

Infrastructure: Maintaining and upgrading the aging infrastructure, including levees and navigation channels, is a continuous challenge.

Projects in this sub-basin (4)

ProjectSub-BasinLocationTypeImplementerStatusCostBenefits
Flyway Forests Wetlands Lower Mississippi Memphis, Tennessee 24 Ducks Unlimited Accepting Funding $4,600,000 Volumetric, Water Quality
Bald Cypress Reforestation & Water Quality Trading Credits – Coastal Louisiana Lower Mississippi New Orleans, Louisiana 16 Restore the Earth Foundation Accepting Funding Volumetric, Water Quality
Rice Stewardship Partnership Lower Mississippi Mississippi County, Arkansas 4 Ducks Unlimited Accepting Funding $20,000,000 Volumetric, Water Quality
AgriCapture Louisiana Rice Water Stewardship Project Lower Mississippi St. John the Baptist Parish, Louisiana 6 AgriCapture Accepting Funding $1,600,000 Volumetric, Water Quality

Flyway Forests Wetlands

Sub-BasinLower Mississippi
LocationMemphis, Tennessee
Type24
ImplementerDucks Unlimited
StatusAccepting Funding
Cost$4,600,000
BenefitsVolumetric, Water Quality

Bald Cypress Reforestation & Water Quality Trading Credits – Coastal Louisiana

Sub-BasinLower Mississippi
LocationNew Orleans, Louisiana
Type16
ImplementerRestore the Earth Foundation
StatusAccepting Funding
Cost
BenefitsVolumetric, Water Quality

Rice Stewardship Partnership

Sub-BasinLower Mississippi
LocationMississippi County, Arkansas
Type4
ImplementerDucks Unlimited
StatusAccepting Funding
Cost$20,000,000
BenefitsVolumetric, Water Quality

AgriCapture Louisiana Rice Water Stewardship Project

Sub-BasinLower Mississippi
LocationSt. John the Baptist Parish, Louisiana
Type6
ImplementerAgriCapture
StatusAccepting Funding
Cost$1,600,000
BenefitsVolumetric, Water Quality