Levees / California / 3805010015

Santa Ana River 3

Santa Ana, Orange County, California. On the Greenville-Banning Channel, Santa Ana River, Santa Ana River. USACE records 169,211 people living in the area this system is built to protect.

Accredited Levee SystemUSACE oversight
People behind it
169,211
USACE figure
Structures
28,337
in the leveed area
Levee length
28.4
miles, plus 2.75 of floodwall
Leveed area
16.90
square miles
01

The federal record

System ID
3805010015
System type
Levee System
FEMA accreditation
Accredited Levee System
Screening rating (LSAC)
High
Inspection rating
M
Inspection date
06/19/2015
Rehabilitation programme
Active
Responsible sponsor
Orange County Flood Control District
Waterway
Greenville-Banning Channel, Santa Ana River, Santa Ana River
Segments
3
USACE district
Los Angeles
USACE division
South Pacific Division
FEMA region
9
Congressional district
40, 45, 46, 47
Consequence estimate
$22.34 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 3805010015. 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.