Rancho Seco
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Sacramento |
| Nearest City | Clay Twonsite |
| River/Stream | Tr Hadselville Cr |
| Coordinates | 38.33650, -121.10190 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 58 ft |
| Dam Height | 58 ft |
| Dam Length | 3,400 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 2,950 acre-ft |
| Max Storage | 2,950 acre-ft |
| Surface Area | 165 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Tailings |
| Owner | Sacramento Municipal Utility District |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/29/2025 |
| Emergency Action Plan | Yes |