Thompson Creek
California — Los Angeles County — Thompson Creek
Location
| State | California |
| County | Los Angeles |
| River | Thompson Creek |
| Coordinates | 34.14070, -117.71380 |
Physical Characteristics
| NID Height | 66 ft |
| Dam Height | 66 ft |
| Dam Length | 1,500 ft |
| NID Storage | 543 acre-ft |
| Max Storage | 543 acre-ft |
| Surface Area | 345 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | October 22, 2025 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1928 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | Earth |
| Owner Type | Local Government |
| Owner | Los Angeles County Department Of Public Works |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.