Levees / California / 5205000401

Brannan-Andrus LMD - RD 0556

Isleton, Sacramento County, California. On the Georgiana Slough, Mokelumne River, Sacramento River, San Joaquin River, Sevenmile Slough. USACE records 1,860 people living in the area this system is built to protect.

Non-Accredited Levee SystemUSACE oversight
People behind it
1,860
USACE figure
Structures
873
in the leveed area
Levee length
39.3
miles
Leveed area
23.36
square miles
01

The federal record

System ID
5205000401
System type
Levee System
FEMA accreditation
Non-Accredited Levee System
Screening rating (LSAC)
High
Inspection rating
Not published
Inspection date
02/05/2021
Rehabilitation programme
Inactive
Responsible sponsor
Brannan-Andrus Levee Maintenance District, CA Department of Water Resources, Central Valley Flood Protection Board, RD 0556 - Upper Andrus Island, Unknown Levee Owner
Waterway
Georgiana Slough, Mokelumne River, Sacramento River, San Joaquin River, Sevenmile Slough
Segments
8
USACE district
Sacramento
USACE division
South Pacific Division
FEMA region
9
Congressional district
03, 07
Consequence estimate
$174.8 million
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

Source: USACE National Levee Database, system 5205000401. 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.