Loon Lake Storage Lagoon No 2
Loon Lake Storage Lagoon No 2 is an earth dam located in Stevens County, Washington, built in 1986. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Loon Lake Storage Lagoon No 2
Loon Lake Storage Lagoon No 2 is a dam in Stevens, Washington. The dam is owned by Loon Lake Sewer Dist No 4 (public utility). It impounds the Tr-loon Lake-offstream.
The dam stands 12 feet tall and stretches 960 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 76 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1986, the structure is 40 years old.
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 09/27/2022.
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 | Stevens |
| River/Stream | Tr-loon Lake-offstream |
| Coordinates | 48.06917, -117.62318 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Length | 960 ft |
| Year Completed | 1986 (40 years old) |
Storage & Hydraulics
| NID Storage | 76 acre-ft |
| Max Storage | 76 acre-ft |
| Normal Storage | 62 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 2 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Loon Lake Sewer Dist No 4 |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/27/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WA00519 |
| Federal ID | WA00519 |
| More Info | State Dam Safety Program |