Levees / By county / St. Martin Parish, LA
Levee systems in St. Martin Parish, LA
5 systems on the federal register here, with 425,023 people recorded behind them.
| System | Location | Accreditation | People | Length |
|---|---|---|---|---|
| Mississippi River West Bank - Below Morganza | Crescent, Iberville Parish, Louisiana | Accredited | 243,744 | 156.1 miles |
| West of Atchafalaya Basin | Washington, St. Landry Parish, Louisiana | Accredited | 171,303 | 163.2 miles |
| Terrebonne Basin | Berwick, St. Mary Parish, Louisiana | Non-Accredited | 5,527 | 4.37 miles |
| West Atchafalaya Floodway | Palmetto, St. Landry Parish, Louisiana | Accredited | 4,439 | 63.7 miles |
| Morganza Floodway | Fordoche, Pointe Coupee Parish, Louisiana | Accredited | 10 | 29.6 miles |
Source: USACE National Levee Database, refreshed 2026-09-10.