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Mid-Breton Sediment Diversion

Reconnecting the Mississippi River

  • Plaquemines Parish, Louisiana

    Plaquemines Parish, Louisiana

A combination of factors has led to a trend of land loss along the Louisiana coast, but mimicking natural flows could help reverse these effects

Historically, the sediment-rich flows from the Mississippi River built coastal Louisiana, and the construction of flood protection levees along the lower Mississippi River has prevented those needed flows from reaching wetlands where they would sustain Louisiana’s coastal landscape. The purpose of the Mid Breton Sediment Diversion project is to reconnect the Mississippi River to deteriorating deltaic wetlands in the Breton Sound Basin. 

The current project will reconnect the river through the construction of a control structure in the mainline levee along the Mississippi River. The project also includes an associated river inlet channel, a conveyance channel across the protected landside area, and a back structure through the existing hurricane surge protection levee. 

This project is considered key to reversing the coastal land loss trend that has plagued Louisiana for the past hundred years. Upon completion and maturation of the sediment diversion, an estimated 67,500 acres (27,300 hectares) of marsh will be restored, sequestering approximately 24,000 tons of carbon each year.

At a Glance

Coastal Protection & Restoration Authority (CPRA)
Meet Our Team

David Hayson, Senior Project Engineer

Water is a powerful force that shapes our landscape. Every stream, watershed, and problem/solution is unique.

Matthew Hoy, Principal

My passion lies in using hydraulic models to support large water resources projects that make the world a safer and more sustainable place.

Steve Mathies, Global Practice Leader, Coastal Restoration

I am a native of Louisiana—coastal land loss is a very personal tragedy. Being a passionate advocate for restoration and proactively engaging with the community has been the hallmark of my career.
Steve  Mathies Global Practice Leader, Coastal Restoration Read More

Hilary Thibodeaux, Principal, Senior Project Manager

With increasing coastal issues, I’m proud to deliver innovative and quality coastal projects to protect communities and reduce land loss.
Hilary Thibodeaux Principal, Senior Project Manager Read More

John Montgomery, Senior Vice President, Sector Leader, Water Resources

No resource is more important than clean water. We all share a responsibility to manage it in an appropriate and effective way.
John Montgomery Senior Vice President, Sector Leader, Water Resources Read More

Ryan Waldron, Coastal Engineer

I feel tremendous pride when I work on a project that restores or protects our fragile and beautiful landscape.

David Hayson

Senior Project Engineer

Matthew Hoy


Steve  Mathies

Global Practice Leader, Coastal Restoration

Hilary Thibodeaux

Principal, Senior Project Manager

John Montgomery

Senior Vice President, Sector Leader, Water Resources

Ryan Waldron

Coastal Engineer

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