Levees / California / 5205000281

Mormon Slough - Calaveras R right bank - RD 2074

Stockton, San Joaquin County, California. On the Calaveras River, Fivemile Slough, Fourteen Mile Slough, Fourteenmile Slough, Mosher Slough, San Joaquin River, Ten Mile Slough. USACE records 129,278 people living in the area this system is built to protect.

Provisionally Accredited Levee (PAL) SystemUSACE oversight
People behind it
129,278
USACE figure
Structures
35,109
in the leveed area
Levee length
24.4
miles, plus 0.58 of floodwall
Leveed area
18.97
square miles
01

The federal record

System ID
5205000281
System type
Levee System
FEMA accreditation
Provisionally Accredited Levee (PAL) System
Screening rating (LSAC)
High
Inspection rating
Not published
Inspection date
08/06/2020
Rehabilitation programme
Active
Responsible sponsor
CA Department of Water Resources, Central Valley Flood Protection Board, RD 0017 - Mossdale, RD 0404 - Boggs Tract, RD 2074 - Sargent-Barnhart Tract, San Joaquin Area Flood Control Agency, San Joaquin County Public Works, Siegfried Engineering, Inc., Unknown Levee Owner
Waterway
Calaveras River, Fivemile Slough, Fourteen Mile Slough, Fourteenmile Slough, Mosher Slough, San Joaquin River, Ten Mile Slough
Segments
11
USACE district
Sacramento
USACE division
South Pacific Division
FEMA region
9
Congressional district
09
Consequence estimate
$13.74 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 5205000281. 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.