Grizzly Valley
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Plumas |
| Nearest City | Portola |
| River/Stream | Big Grizzly Cr |
| Coordinates | 39.88270, -120.47710 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 115 ft |
| Dam Height | 115 ft |
| Dam Length | 800 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 83,000 acre-ft |
| Max Storage | 83,000 acre-ft |
| Surface Area | 4,032 acres |
| Drainage Area | 44 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | California Department of Water Resources |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/19/2025 |
| Emergency Action Plan | Yes |