Union Valley
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | California |
| County | El Dorado |
| Nearest City | Coloma |
| River/Stream | Big Silver Creek |
| Coordinates | 38.86650, -120.44050 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 455 ft |
| Dam Height | 440 ft |
| Dam Length | 1,990 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 266,369 acre-ft |
| Max Storage | 266,369 acre-ft |
| Normal Storage | 204,000 acre-ft |
| Surface Area | 2,860 acres |
| Drainage Area | 83 sq mi |
| Max Discharge | 44,500 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Sacramento Municipal Utility District |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/30/2023 |
| Emergency Action Plan | Yes |