Lewiston Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | California |
| County | Trinity |
| River/Stream | TRINITY RIVER |
| Coordinates | 40.72640, -122.79300 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 91 ft |
| Dam Height | 73 ft |
| Dam Length | 745 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 14,660 acre-ft |
| Max Storage | 14,660 acre-ft |
| Normal Storage | 14,660 acre-ft |
| Surface Area | 750 acres |
| Drainage Area | 718 sq mi |
| Max Discharge | 1,902 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | BUREAU OF RECLAMATION |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 04/19/2023 |
| Emergency Action Plan | Yes |