Swift No 2 Hydroelectric Project
Swift No 2 Hydroelectric Project is an earth dam located in Cowlitz County, Washington, built in 1959. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Swift No 2 Hydroelectric Project
The primary purpose of Swift No 2 Hydroelectric Project 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 Pud #1 Of Cowlitz County, Wa (public utility). It impounds the Lewis River near Cougar, Wa.
The dam stands 121 feet tall and stretches 16,700 feet across, creates a reservoir covering 95 acres, and has a maximum storage capacity of 2,500 acre-feet. Completed in 1959, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. 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 07/19/2022.
At 121 feet, this dam is taller than 98% of all dams in the United States.
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Location
| State | Washington |
| County | Cowlitz |
| Nearest City | Cougar, Wa |
| River/Stream | Lewis River |
| Coordinates | 46.05990, -122.25990 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 121 ft |
| Dam Height | 106 ft |
| Dam Length | 16,700 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 2,500 acre-ft |
| Max Storage | 2,500 acre-ft |
| Normal Storage | 2,400 acre-ft |
| Surface Area | 95 acres |
| Max Discharge | 8,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | PUD #1 of Cowlitz County, WA |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/19/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WA00258 |
| Federal ID | WA00258 |
| More Info | State Dam Safety Program |