Levees / By county / Orange County, CA
Levee systems in Orange County, CA
21 systems on the federal register here, with 477,087 people recorded behind the 20 that publish a figure.
| System | Location | Accreditation | People | Length |
|---|---|---|---|---|
| San Gabriel River/Coyote Creek 2 | Norwalk, Los Angeles County, California | Provisionally Accredited Levee (PAL) System | 180,197 | 23.3 miles |
| Santa Ana River 3 | Santa Ana, Orange County, California | Accredited | 169,211 | 28.4 miles |
| Santa Ana River 1 | Santa Ana, Orange County, California | Accredited | 53,019 | 22.9 miles |
| Orange County Levee 1 | Huntington Beach, Orange County, California | Accredited | 28,765 | 1.91 miles |
| Orange County Levee 6 | Huntington Beach, Orange County, California | Accredited | 22,429 | 0.48 miles |
| San Gabriel River/Coyote Creek 1 | Long Beach, Los Angeles County, California | Provisionally Accredited Levee (PAL) System | 5,322 | 5.23 miles |
| Orange County Levee 9 | Huntington Beach, Orange County, California | Accredited | 5,067 | 0.51 miles |
| Coyote Creek/Carbon Creek 1 | Cypress, Orange County, California | Provisionally Accredited Levee (PAL) System | 3,979 | 2.83 miles |
| Santa Ana River 2 | Newport Beach, Orange County, California | Accredited | 2,952 | 1.88 miles |
| Coyote Creek - Carbon Creek 2 | Cypress, Orange County, California | Provisionally Accredited Levee (PAL) System | 2,513 | 1.48 miles |
| Orange County Levee 10 | Fountain Valley, Orange County, California | Accredited | 1,887 | 1.86 miles |
| Orange County Floodwall 5 | San Juan Capistrano, Orange County, California | Non-Accredited | 786 | Not published |
| Coyote Creek 3 | La Palma, Orange County, California | Provisionally Accredited Levee (PAL) System | 622 | 3.23 miles |
| Orange County Levee 5 | San Juan Capistrano, Orange County, California | Non-Accredited | 144 | 0.40 miles |
| Orange County Levee 4 Lower | San Juan Capistrano, Orange County, California | Non-Accredited | 80 | 0.49 miles |
| Michelson Water Reclamation Plant Flood Protection Project | Irvine, Orange County, California | Accredited | 56 | 0.19 miles |
| SOCWA Reclamation Plant Levee | Laguna Niguel, Orange County, California | Non-Accredited | 39 | 0.26 miles |
| Sar9Ph2b | Anaheim, Orange County, California | Non-Accredited | 11 | 0.61 miles |
| Bee Canyon Wash Left Bank | Irvine, Orange County, California | Accredited | 8 | 0.64 miles |
| Orange County Levee 4 | San Juan Capistrano, Orange County, California | Non-Accredited | 0 | 0.24 miles |
| Orange County Levee 4 Middle | San Juan Capistrano, Orange County, California | Non-Accredited | Not published | 0.59 miles |
Source: USACE National Levee Database, refreshed 2026-09-10.