Ralston Afterbay
California — Placer County — Rubicon River
Location
| State | California |
| County | Placer |
| River | Rubicon River |
| Coordinates | 39.00430, -120.74640 |
Physical Characteristics
| NID Height | 89 ft |
| Dam Height | 89 ft |
| Dam Length | 560 ft |
| NID Storage | 2,780 acre-ft |
| Max Storage | 2,780 acre-ft |
| Surface Area | 83 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Fair |
| EAP Status | Yes |
| Last Inspection | August 23, 2023 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1966 |
| Primary Purpose | Irrigation |
| Dam Type | Concrete |
| Owner Type | Local Government |
| Owner | Placer County Water Agency |
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.