Levees / Louisiana / 4405000559

Morgan City Ring Area

Morgan City, St. Mary Parish, Louisiana. On the Lower Atchafalaya River; Bayou Boeuf, Intracoastal Waterway; Bayou Ramos; Lake Palourde; Flat Lake; Little Tensas Bayou. USACE records 12,158 people living in the area this system is built to protect.

Accredited Levee SystemUSACE oversight
People behind it
12,158
USACE figure
Structures
6,014
in the leveed area
Levee length
10.4
miles, plus 4.04 of floodwall
Leveed area
5.01
square miles
01

The federal record

System ID
4405000559
System type
Levee System
FEMA accreditation
Accredited Levee System
Screening rating (LSAC)
Moderate
Inspection rating
Not published
Inspection date
Not published
Rehabilitation programme
NA
Responsible sponsor
Burlington Northern Sante Fe Railway, St. Mary Levee District, USACE - New Orleans District
Waterway
Lower Atchafalaya River; Bayou Boeuf, Intracoastal Waterway; Bayou Ramos; Lake Palourde; Flat Lake; Little Tensas Bayou
Segments
3
USACE district
New Orleans
USACE division
Mississippi Valley Division
FEMA region
6
Congressional district
03
Consequence estimate
$1.95 billion
Flood of record
Not published

What this page does not tell you

It does not say whether any particular address is protected. A FEMA accreditation status describes this system measured against a design flood event, and USACE states that the database may not represent the totality of levees in the United States. If you need to know what applies to a specific property, your local floodplain administrator holds that answer. How to read an accreditation status.

02

Where it is

Louisiana
All levee systems in this state
St. Mary Parish, LA
All levee systems in this county

Source: USACE National Levee Database, system 4405000559. Refreshed 2026-09-10. Values are reproduced as published. USACE updates the database irregularly and without a change feed, so the refresh date above is the age of what you are reading.