Levees / By county / Contra Costa County, CA
Levee systems in Contra Costa County, CA
75 systems on the federal register here, with 30,651 people recorded behind the 73 that publish a figure.
| System | Location | Accreditation | People | Length |
|---|---|---|---|---|
| Contra Costa County Levee 20 | Bethel Island, Contra Costa County, California | Non-Accredited | 3,908 | 14.2 miles |
| Wildcat Creek - LB | North Richmond, Contra Costa County, California | Accredited | 3,894 | 0.53 miles |
| Contra Costa County Levee 25 | Discovery Bay, Contra Costa County, California | Provisionally Accredited Levee (PAL) System | 3,393 | 2.05 miles |
| Contra Costa County Levee 22 | Oakley, Contra Costa County, California | Non-Accredited | 3,322 | 8.87 miles |
| RD 0800 - Byron Tract | Discovery Bay, Contra Costa County, California | Accredited | 3,070 | 18.7 miles |
| Walnut Creek - Grayson Creek, right bank | Pacheco, Contra Costa County, California | Non-Accredited | 2,375 | 2.88 miles |
| Contra Costa County Levee 32 | Oakley, Contra Costa County, California | Accredited | 2,192 | 1.83 miles |
| Contra Costa County Levee 16 | Oakley, Contra Costa County, California | Accredited | 1,759 | 3.11 miles |
| Lakeshore Dry Levee | Discovery Bay, Contra Costa County, California | Provisionally Accredited Levee (PAL) System | 1,477 | 0.64 miles |
| Walnut Creek - Clayton Valley Drain, left bank | Concord, Contra Costa County, California | Non-Accredited | 1,365 | 1.68 miles |
| Contra Costa County Levee 29 | Oakley, Contra Costa County, California | Accredited | 740 | 0.82 miles |
| Walnut Creek - Grayson Creek, left bank | Vine Hill, Contra Costa County, California | Non-Accredited | 638 | 1.49 miles |
| Walnut Creek - Clayton Valley Drain, right bank | Concord, Contra Costa County, California | Non-Accredited | 528 | 0.56 miles |
| San Pablo Creek - RB | North Richmond, Contra Costa County, California | Accredited | 470 | 0.62 miles |
| Contra Costa County Levee 39 | Discovery Bay, Contra Costa County, California | Non-Accredited | 445 | 0.94 miles |
| Rodeo Creek - LB | Rodeo, Contra Costa County, California | Non-Accredited | 412 | 0.25 miles |
| Wildcat Creek - RB | Richmond, Contra Costa County, California | Accredited | 159 | 0.99 miles |
| Contra Costa County Levee 7 | Knightsen, Contra Costa County, California | Non-Accredited | 123 | 8.88 miles |
| San Pablo Creek - LB | North Richmond, Contra Costa County, California | Accredited | 60 | 0.37 miles |
| Pinole Creek - RB | Pinole, Contra Costa County, California | Non-Accredited | 52 | 0.08 miles |
| Pinole Creek - LB | Pinole, Contra Costa County, California | Non-Accredited | 47 | 0.05 miles |
| Rodeo Creek - RB | Rodeo, Contra Costa County, California | Non-Accredited | 40 | 0.19 miles |
| Contra Costa County Levee 9 | Discovery Bay, Contra Costa County, California | Non-Accredited | 28 | 13.0 miles |
| Contra Costa County Levee 64 | Martinez, Contra Costa County, California | Non-Accredited | 24 | 1.17 miles |
| Contra Costa County Levee 15 | Bethel Island, Contra Costa County, California | Non-Accredited | 19 | 7.36 miles |
| Contra Costa County Levee 14 | Oakley, Contra Costa County, California | Non-Accredited | 17 | 1.37 miles |
| Contra Costa County Levee 17 | Bethel Island, Contra Costa County, California | Non-Accredited | 16 | 10.9 miles |
| Contra Costa County Levee 24 | Oakley, Contra Costa County, California | Non-Accredited | 13 | 2.94 miles |
| Rheem Creek - LB | Richmond, Contra Costa County, California | Non-Accredited | 12 | 0.68 miles |
| Contra Costa County Levee 35 | Knightsen, Contra Costa County, California | Non-Accredited | 10 | 7.87 miles |
| Contra Costa County Levee 6 | Oakley, Contra Costa County, California | Non-Accredited | 10 | 3.57 miles |
| Contra Costa County Levee 19 | Bethel Island, Contra Costa County, California | Non-Accredited | 7 | 15.4 miles |
| Wildcat Creek | Richmond, Contra Costa County, California | Accredited | 7 | 0.07 miles |
| Contra Costa County Levee 253 | Mountain House, Contra Costa County, California | Non-Accredited | 6 | 5.45 miles |
| Rheem Creek - RB | Richmond, Contra Costa County, California | Non-Accredited | 4 | 0.68 miles |
| Contra Costa County Levee 151 | Antioch, Contra Costa County, California | Non-Accredited | 3 | 0.27 miles |
| Sacramento County Levee 1 | Bethel Island, Contra Costa County, California | Non-Accredited | 2 | 12.8 miles |
| Contra Costa County Levee 198 | Pittsburg, Contra Costa County, California | Non-Accredited | 1 | 4.59 miles |
| Contra Costa County Levee 255 | Byron, Contra Costa County, California | Non-Accredited | 1 | 2.03 miles |
| Contra Costa County Levee 41 | Bethel Island, Contra Costa County, California | Non-Accredited | 1 | 7.02 miles |
| Contra Costa County Levee 52 | Pittsburg, Contra Costa County, California | Non-Accredited | 1 | 2.79 miles |
| Contra Costa County Levee 10 | Oakley, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 108 | Richmond, Contra Costa County, California | Non-Accredited | 0 | 0.28 miles |
| Contra Costa County Levee 12 | Brentwood, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 13 | Oakley, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 18 | Discovery Bay, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 2 | Brentwood, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 208 | Pittsburg, Contra Costa County, California | Non-Accredited | 0 | 0.43 miles |
| Contra Costa County Levee 21 | Brentwood, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 215 | Martinez, Contra Costa County, California | Non-Accredited | 0 | 0.30 miles |
| Contra Costa County Levee 217 | Pittsburg, Contra Costa County, California | Non-Accredited | 0 | 0.17 miles |
| Contra Costa County Levee 218 | Richmond, Contra Costa County, California | Non-Accredited | 0 | 0.39 miles |
| Contra Costa County Levee 23 | Brentwood, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 245 | Richmond, Contra Costa County, California | Non-Accredited | 0 | 1.34 miles |
| Contra Costa County Levee 251 | Byron, Contra Costa County, California | Non-Accredited | 0 | 0.23 miles |
| Contra Costa County Levee 256 | Mountain House, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 257 | Mountain House, Alameda County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 30 | Brentwood, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 31 | Brentwood, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 33 | Brentwood, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 34 | Discovery Bay, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 37 | Discovery Bay, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 38 | Discovery Bay, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 40 | Oakley, Contra Costa County, California | Non-Accredited | 0 | 0.47 miles |
| Contra Costa County Levee 42 | Byron, Contra Costa County, California | Non-Accredited | 0 | 5.17 miles |
| Contra Costa County Levee 47 | Pittsburg, Contra Costa County, California | Non-Accredited | 0 | 0.42 miles |
| Contra Costa County Levee 55 | Pittsburg, Contra Costa County, California | Non-Accredited | 0 | 0.29 miles |
| Contra Costa County Levee 73 | Richmond, Contra Costa County, California | Non-Accredited | 0 | 1.14 miles |
| Contra Costa County Levee 8 | Brentwood, Contra Costa County, California | Non-Accredited | 0 | Not published |
| Contra Costa County Levee 81 | Antioch, Contra Costa County, California | Non-Accredited | 0 | 0.19 miles |
| Contra Costa County Levee 88 | Richmond, Contra Costa County, California | Non-Accredited | 0 | 0.37 miles |
| Wildcat Creek | North Richmond, Contra Costa County, California | Non-Accredited | 0 | 0.01 miles |
| Wildcat Creek | North Richmond, Contra Costa County, California | Accredited | 0 | 0.14 miles |
| Contra Costa County Levee 1 | Oakley, Contra Costa County, California | Non-Accredited | Not published | Not published |
| Contra Costa County Levee 27 | Oakley, Contra Costa County, California | Non-Accredited | Not published | Not published |
Source: USACE National Levee Database, refreshed 2026-09-10.