Levees / California / 3805010061

San Gabriel River 6

Irwindale, Los Angeles County, California. On the San Gabriel River. USACE records 57,763 people living in the area this system is built to protect.

Non-Accredited Levee SystemUSACE oversight
People behind it
57,763
USACE figure
Structures
12,713
in the leveed area
Levee length
4.5
miles
Leveed area
6.12
square miles
01

The federal record

System ID
3805010061
System type
Levee System
FEMA accreditation
Non-Accredited Levee System
Screening rating (LSAC)
Low
Inspection rating
M
Inspection date
01/10/2011
Rehabilitation programme
Active
Responsible sponsor
Los Angeles County Department of Public Works
Waterway
San Gabriel River
Segments
1
USACE district
Los Angeles
USACE division
South Pacific Division
FEMA region
9
Congressional district
31
Consequence estimate
$4.58 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

Source: USACE National Levee Database, system 3805010061. 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.