Waimalu Stream - NF Debris Basin and Channel (WSNB)
Waimalu, Honolulu County, Hawaii. USACE records 933 people living in the area this system is built to protect.
Non-Accredited Levee SystemFederally built
People behind it
933
USACE figure
Structures
230
in the leveed area
Levee length
n/a
miles, plus 0.54 of floodwall
Leveed area
0.08
square miles
01
The federal record
System ID
3205041302
System type
Levee System
FEMA accreditation
Non-Accredited Levee System
Screening rating (LSAC)
Not Screened
Inspection rating
U
Inspection date
05/05/2021
Rehabilitation programme
Inactive
Responsible sponsor
County of Hawaii, Department of Public Works
Waterway
Not published
Segments
1
USACE district
Honolulu
USACE division
Pacific Ocean Division
FEMA region
9
Congressional district
01
Consequence estimate
$102.0 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 3205041302. 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.