California Dam Report Cards by County
County-level report cards for California. Scores combine high-hazard dam counts with condition, emergency-plan, and older-inspection-date flags.
| County | State | Grade | Score | Total | High | Significant | Poor/unsat. | Missing EAP | Older inspection |
|---|---|---|---|---|---|---|---|---|---|
| Los Angeles County | California | F | 292 | 103 | 81 | 6 | 3 | 5 | 4 |
| San Diego County | California | D | 164 | 59 | 42 | 2 | 6 | 1 | 1 |
| Napa County | California | D | 163 | 59 | 38 | 12 | 3 | 5 | 1 |
| Riverside County | California | D | 145 | 46 | 40 | 2 | 1 | 3 | 3 |
| San Bernardino County | California | D | 132 | 44 | 37 | 4 | 1 | 2 | 2 |
| Sonoma County | California | D | 132 | 64 | 35 | 13 | 2 | 1 | 0 |
| Santa Clara County | California | D | 127 | 42 | 26 | 3 | 8 | 1 | 1 |
| Orange County | California | D | 123 | 43 | 35 | 1 | 3 | 0 | 1 |
| Shasta County | California | D | 102 | 45 | 22 | 8 | 4 | 1 | 2 |
| El Dorado County | California | C | 92 | 51 | 20 | 14 | 2 | 2 | 0 |
| Fresno County | California | C | 91 | 32 | 20 | 2 | 1 | 5 | 2 |
| Calaveras County | California | C | 82 | 40 | 23 | 3 | 2 | 0 | 0 |
| Placer County | California | C | 79 | 39 | 23 | 4 | 0 | 1 | 1 |
| Nevada County | California | C | 72 | 48 | 22 | 1 | 1 | 0 | 0 |
| Contra Costa County | California | C | 69 | 26 | 23 | 0 | 0 | 0 | 0 |
| Mono County | California | C | 69 | 20 | 14 | 1 | 4 | 1 | 1 |
| Tuolumne County | California | C | 65 | 32 | 19 | 3 | 1 | 0 | 0 |
| Solano County | California | C | 61 | 20 | 14 | 1 | 2 | 2 | 0 |
| Ventura County | California | C | 59 | 16 | 14 | 1 | 2 | 1 | 1 |
| Alameda County | California | C | 57 | 22 | 18 | 3 | 0 | 0 | 0 |
| Mendocino County | California | C | 56 | 28 | 15 | 6 | 1 | 0 | 0 |
| Modoc County | California | C | 56 | 75 | 8 | 10 | 2 | 2 | 2 |
| San Luis Obispo County | California | C | 55 | 13 | 10 | 1 | 2 | 3 | 1 |
| Monterey County | California | C | 55 | 17 | 5 | 3 | 7 | 0 | 1 |
| Plumas County | California | C | 54 | 24 | 16 | 2 | 0 | 1 | 0 |
| Butte County | California | C | 54 | 25 | 14 | 2 | 2 | 0 | 0 |
| San Mateo County | California | C | 52 | 21 | 12 | 1 | 3 | 0 | 0 |
| Lake County | California | C | 50 | 21 | 14 | 0 | 0 | 2 | 0 |
| Kern County | California | C | 50 | 25 | 11 | 5 | 0 | 2 | 2 |
| Lassen County | California | B | 49 | 53 | 8 | 5 | 0 | 5 | 0 |
| Sacramento County | California | B | 48 | 20 | 9 | 5 | 0 | 2 | 4 |
| Amador County | California | B | 45 | 21 | 11 | 2 | 2 | 0 | 0 |
| Santa Barbara County | California | B | 44 | 14 | 14 | 0 | 0 | 0 | 1 |
| Marin County | California | B | 35 | 17 | 10 | 5 | 0 | 0 | 0 |
| Madera County | California | B | 34 | 21 | 11 | 1 | 0 | 0 | 0 |
| Yuba County | California | B | 30 | 16 | 6 | 7 | 1 | 0 | 0 |
| Inyo County | California | B | 24 | 8 | 6 | 1 | 1 | 0 | 0 |
| Alpine County | California | B | 24 | 26 | 6 | 1 | 1 | 0 | 0 |
| San Joaquin County | California | B | 24 | 11 | 4 | 2 | 0 | 2 | 1 |
| Colusa County | California | B | 24 | 6 | 3 | 0 | 1 | 2 | 1 |
| Merced County | California | B | 22 | 11 | 6 | 2 | 0 | 0 | 1 |
| San Francisco County | California | B | 21 | 7 | 7 | 0 | 0 | 0 | 0 |
| Mariposa County | California | A | 19 | 12 | 6 | 1 | 0 | 0 | 0 |
| Siskiyou County | California | A | 19 | 18 | 4 | 3 | 0 | 1 | 0 |
| Trinity County | California | A | 18 | 6 | 5 | 1 | 0 | 0 | 1 |
| San Benito County | California | A | 15 | 7 | 4 | 1 | 0 | 0 | 1 |
| Stanislaus County | California | A | 14 | 11 | 4 | 2 | 0 | 0 | 0 |
| Santa Cruz County | California | A | 11 | 6 | 3 | 2 | 0 | 0 | 0 |
| Imperial County | California | A | 11 | 3 | 3 | 0 | 0 | 0 | 1 |
| Sierra County | California | A | 9 | 9 | 2 | 3 | 0 | 0 | 0 |
| Humboldt County | California | A | 8 | 2 | 1 | 0 | 1 | 0 | 0 |
| Tulare County | California | A | 6 | 8 | 1 | 3 | 0 | 0 | 0 |
| Glenn County | California | A | 4 | 5 | 1 | 1 | 0 | 0 | 0 |
| Yolo County | California | A | 3 | 3 | 1 | 0 | 0 | 0 | 0 |
| Tehama County | California | A | 0 | 9 | 0 | 0 | 0 | 0 | 0 |
| Kings County | California | A | 0 | 5 | 0 | 0 | 0 | 0 | 0 |
| Sutter County | California | A | 0 | 1 | 0 | 0 | 0 | 0 | 0 |