# Corps to construct underwater sill to halt saltwater intrusion on Mississippi River > New Orleans District > News Releases

> The Army Corps of Engineers New Orleans District will build an underwater sill across the Mississippi River channel near Myrtle Grove, Louisiana, to block upriver movement of saltwater. The sill is triggered when the saltwater wedge reaches its projected threshold during low-water season.

- Date: 2022-09-28 · published 2022-09-28T12:00:00.000Z
- Category: logistics · region US · magnitude medium
- Page: https://feedsoft.ai/events/16685-corps-to-construct-underwater-sill-to-halt-saltwater-intrusion-on-mississippi
- Commodities: [Barge Freight (St. Louis)](https://feedsoft.ai/c/BARGE.md)

## Why it matters

Keeping the river navigable and protecting freshwater supplies helps maintain Gulf export logistics, but low river levels still limit barge loads. The sill signals that drought-driven constraints on grain freight are likely to persist.

## Read by commodity

- BARGE: bullish ▲

## Sources

- mvn.usace.army.mil: https://www.mvn.usace.army.mil/Media/News-Releases/Article/3173748/corps-to-construct-underwater-sill-to-halt-saltwater-intrusion-on-mississippi-r/

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.