60th Street Stormwater Detention Dam Reservoir Report
Last Updated: December 15, 2025
The 60th Street Stormwater Detention Dam, located within Everett City Limits in Snohomish, Washington, serves as a crucial flood risk reduction structure in the area.
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Summary
Completed in 1988, this earth dam with a structural height of 76 feet and a hydraulic height of 104 feet plays a vital role in managing stormwater and protecting the surrounding community from potential flooding events. With a normal storage capacity of 10 acre-feet and a maximum storage capacity of 307 acre-feet, this dam helps regulate the flow of water and mitigate potential hazards during heavy rainfall.
Managed by the Washington Dept of Ecology, the 60th Street Stormwater Detention Dam undergoes regular inspections to ensure its structural integrity and effectiveness in flood risk reduction. The dam is classified as having a significant hazard potential, yet its condition was assessed as satisfactory during the last inspection in August 2015. With the primary purpose of flood risk reduction, this essential infrastructure demonstrates the commitment of local government in Snohomish, Washington, to protect its residents and manage water resources effectively.
For water resource and climate enthusiasts, the 60th Street Stormwater Detention Dam serves as a fascinating example of engineering excellence in managing stormwater and reducing flood risks. With a history dating back to 1988, this earth dam continues to play a vital role in safeguarding the community within Everett City Limits. As a state-regulated structure with a significant hazard potential, the dam's satisfactory condition assessment and regular inspections highlight the dedication of local authorities to ensure the safety and resilience of the surrounding area in the face of changing weather patterns and increased water flow.
Year Completed |
1988 |
Primary Dam Type |
Earth |
Hydraulic Height |
104 |
Drainage Area |
1.81 |
Nid Storage |
307 |
Structural Height |
76 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
104 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
60th Street Stormwater Detention Dam
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