60th Street Stormwater Detention Dam
60th Street Stormwater Detention Dam is an earth dam located in Snohomish County, Washington, built in 1988. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About 60th Street Stormwater Detention Dam
The primary purpose of 60th Street Stormwater Detention Dam 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 Everett City Public Works (local government).
The dam stands 104 feet tall, has a maximum storage capacity of 307 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1988, the structure is 38 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in 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 08/25/2015. That was over 10 years ago.
At 104 feet, this dam is taller than 98% of all dams in the United States.
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Location
| State | Washington |
| County | Snohomish |
| Nearest City | Within Everett City Limits |
| Coordinates | 47.94246, -122.25717 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 104 ft |
| Year Completed | 1988 (38 years old) |
Storage & Hydraulics
| NID Storage | 307 acre-ft |
| Max Storage | 307 acre-ft |
| Normal Storage | 10 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 470 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Everett City Public Works |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/25/2015 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WA00578 |
| Federal ID | WA00578 |
| More Info | State Dam Safety Program |