Cushman No 2
Cushman No 2 is an arch dam located in Mason County, Washington, built in 1930. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Cushman No 2
The primary purpose of Cushman No 2 is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by City Of Tacoma (public utility). It impounds the North Fork Skokomish River (ho near Skokomish Indian Res.
The dam stands 275 feet tall and stretches 460 feet across, creates a reservoir covering 150 acres, has a maximum storage capacity of 8,800 acre-feet, and collects water from a drainage area of 103 square miles. Completed in 1930, the structure is well-established, with more than 75 years of service.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 05/19/2022.
At 275 feet, this dam is taller than 99% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Washington dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Washington |
| County | Mason |
| Nearest City | Skokomish Indian Res |
| River/Stream | North Fork Skokomish River (ho |
| Coordinates | 47.39768, -123.20103 |
Physical Characteristics
| Dam Type | Arch |
| NID Height | 275 ft |
| Dam Height | 175 ft |
| Dam Length | 460 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 8,800 acre-ft |
| Max Storage | 8,800 acre-ft |
| Normal Storage | 8,000 acre-ft |
| Surface Area | 150 acres |
| Drainage Area | 103 sq mi |
| Max Discharge | 41,050 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | City of Tacoma |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/19/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WA00146 |
| Federal ID | WA00146 |
| More Info | State Dam Safety Program |