Drum Afterbay
Low HazardSatisfactory ConditionEmergency Action Plan: Not Required
Location
| State | California |
| County | Placer |
| Nearest City | None |
| River/Stream | Bear River |
| Coordinates | 39.25440, -120.77500 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 102 ft |
| Dam Height | 102 ft |
| Dam Length | 356 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 341 acre-ft |
| Max Storage | 341 acre-ft |
| Normal Storage | 181 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 5,300 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Pacific Gas and Electric Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/20/2022 |
| Emergency Action Plan | Not Required |