Levees / Washington / 5505000166

Marshland Flood Control District

Snohomish, Snohomish County, Washington. On the Snohomish River. USACE records 590 people living in the area this system is built to protect.

Non-Accredited Levee SystemFederally built
People behind it
590
USACE figure
Structures
100
in the leveed area
Levee length
5.7
miles
Leveed area
4.65
square miles
01

The federal record

System ID
5505000166
System type
Levee System
FEMA accreditation
Non-Accredited Levee System
Screening rating (LSAC)
Low
Inspection rating
Not published
Inspection date
Not published
Rehabilitation programme
Active
Responsible sponsor
Marsh Flood Control District, Unknown Levee Owner
Waterway
Snohomish River
Segments
2
USACE district
Seattle
USACE division
Northwestern Division
FEMA region
10
Congressional district
01
Consequence estimate
$139.7 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 5505000166. 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.