Barrier Dam
Low HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | Washington |
| County | Lewis |
| Nearest City | Toledo, WA |
| River/Stream | Cowlitz River |
| Coordinates | 46.50680, -122.60220 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 16 ft |
| Dam Height | 12 ft |
| Dam Length | 718 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 600 acre-ft |
| Max Storage | 600 acre-ft |
| Normal Storage | 455 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 1,402 sq mi |
| Max Discharge | 68,350 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | City of Tacoma |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/21/2025 |
| Emergency Action Plan | Yes |