Tiger Creek Afterbay
High HazardFair ConditionEmergency Action Plan: Yes
Location
| State | California |
| County | Amador |
| Nearest City | Pioneer |
| River/Stream | North Fork Mokelumne River |
| Coordinates | 38.44124, -120.50513 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 120 ft |
| Dam Height | 120 ft |
| Dam Length | 448 ft |
| Year Completed | 1931 (95 years old) |
Storage & Hydraulics
| NID Storage | 2,610 acre-ft |
| Max Storage | 2,607 acre-ft |
| Normal Storage | 2,610 acre-ft |
| Surface Area | 70 acres |
| Drainage Area | 357 sq mi |
| Max Discharge | 194,370 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Pacific Gas and Electric Company |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 08/21/2025 |
| Emergency Action Plan | Yes |