Mid-Barataria Sediment Diversion

Mid-Barataria Sediment Diversion

The Mid-Barataria Sediment Diversion is the first-of-its-kind restoration project, located in Plaquemines Parish, Louisiana. The project has the capability to build and sustain thousands of acres of land that would provide increased storm surge protection to our vulnerable communities, provide necessary habitats to sustain a productive estuary for fish, wildlife, and industry, and bring billions in economic benefit to the surrounding parishes.

Project Overview

  1. Barataria Basin
  2. Outfall Transition
  3. Channel Guide Levees
  4. Hwy 23 Bridge
  5. Gated Structure
  6. Railroad Access Bridge
  7. Mississippi River Levee
  8. U-Frame Intake Structure
  9. U-Frame Training Walls
  10. Intake Armoring
  11. Mississippi River

Location

River Mile 61, Near Ironton, LA

Project Details

  • Controlled, gated structure

  • Maximum flow: 75,000 cfs

  • Width: 1,600-foot corridor

  • Length: Approximately 2 miles

Proposed Funding Source

Dollars from the State of Louisiana’s Deepwater Horizon natural resource damages settlement (NRDA)

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Permitting Process


Project Benefits

THOUSANDS OF ACRES OF LAND BUILT AND SUSTAINED, CONTINUOUS MARSH CREATION

The Mid-Barataria Sediment Diversion has the capability to build and sustain an estimated 13,000 to 26,000 acres (about 20 to 40 square miles) of wetlands, depending on the rate of future sea level rise. After 50 years of operation, under the higher sea level rise assumptions used in the environmental review process, about 20% of the wetlands remaining in Barataria Basin will only be there because of the Mid-Barataria Sediment Diversion.

mid-barataria-new-sediment

Modeling data representing a fairly aggressive, 1.5 meter sea level rise scenario shows the Mid-Barataria Sediment Diversion has capability to build over 17, 000 acres of land (over 26 square miles) in 30 years in these conditions.

STORM SURGE AND STORM PROTECTION FOR VULNERABLE COMMUNITIES

Wetlands in the Barataria Basin created and sustained by the project would help to push back storm surge and reduce wave impacts in Jefferson, Orleans, and portions of Plaquemines Parishes.

FUNCTIONAL ESTUARY FOR A WIDE RANGE OF PLANTS AND ANIMALS

Re-establishing the natural processes and river flow into the Barataria Basin would create a more productive, dynamic, and ultimately sustainable estuary. By comparison, if natural processes are not re-established, the steady and dramatic decline currently underway will worsen. A  sustainable estuarine system supports healthy marsh and habitat for a wide variety of seafood, fish, and other aquatic life that would be lost without the project.

SIGNIFICANT ECONOMIC BENEFITS FOR COASTAL PARISHES AND BEYOND

  • $1.4 billion increase in sales

  • $648 million increase in household earnings

  • 12,400 additional direct, indirect, and induced jobs

  • $890 million in gross regional product

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