Spirit Lake Outlet Tunnel is an earth dam located in Skamania County, Washington, built in 1985. It carries a Undetermined hazard potential classification.
Dam profile
NID height · 184 ft184 ft tall and 1,000 ft long, taller than 99% of U.S. dams with a recorded height. Height is drawn to scale against the Statue of Liberty, 305 ft ground to torch; the profile is a generic embankment section and the water level is illustrative.
About Spirit Lake Outlet Tunnel
The primary purpose of Spirit Lake Outlet Tunnel is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Usda Fs (federal). It impounds the South Coldwater Creek near Kid Valley.
The dam stands 184 feet tall and stretches 1,000 feet across, creates a reservoir covering 2,200 acres, and has a maximum storage capacity of 57,000 acre-feet. Completed in 1985, the structure is 41 years old.
The most recent inspection on record was 10/06/2011. That was over 15 years ago.
At 184 feet, this dam is taller than 99% of all dams in the United States.
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Location
| State | Washington |
| County | Skamania |
| Nearest City | Kid Valley |
| River/Stream | South Coldwater Creek |
| Coordinates | 46.26670, -122.16000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 184 ft |
| Dam Height | 184 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1985 (41 years old) |
Storage & Hydraulics
| NID Storage | 57,000 acre-ft |
| Max Storage | 57,000 acre-ft |
| Normal Storage | 13,000 acre-ft |
| Surface Area | 2,200 acres |
| Max Discharge | 570 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Usda Fs |
| Owner Type | Federal |
| Hazard Classification | Undetermined |
| Condition Assessment | Not assessed |
| Last Inspection | 10/06/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00770 |
| Federal ID | WA00770 |
| More Info | State Dam Safety Program |