Boeing Creek Park North Pond Dam Reservoir Report

Last Updated: December 15, 2025

Boeing Creek Park North Pond Dam, also known as Shoreline Stormwater Dam, is a crucial structure located in King County, Washington, designed by Landau Associates to mitigate flood risk along NF Boeing Creek.


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Summary

Completed in 1998, this earth dam stands at 54 feet high with a hydraulic height of 19 feet, serving the primary purpose of flood risk reduction for the surrounding area. With a capacity to store 18 acre-feet of water, it covers a surface area of 2 acres and drains a 1.05 square mile watershed.

Maintained by the local government and regulated by the Washington Department of Ecology, Boeing Creek Park North Pond Dam has a satisfactory condition assessment as of August 2020, with a high hazard potential. Despite its critical role in flood protection, the dam lacks spillway infrastructure and detailed risk management measures, pointing to areas for potential improvement. Emergency action plans are in place, with periodic inspections conducted every five years to ensure the dam's integrity and safety for the community.

Representing a key piece of infrastructure in the region, Boeing Creek Park North Pond Dam stands as a testament to efficient flood risk reduction efforts. Its strategic location and design elements play a vital role in protecting the surrounding area from potential inundation, highlighting the importance of proactive water resource management in the face of climate challenges. As climate enthusiasts and water resource advocates, understanding and supporting the ongoing maintenance and improvement of such structures is essential for promoting resilient and sustainable water management practices.

Year Completed

1998

Dam Length

350

River Or Stream

NF Boeing Creek - Offstream

Primary Dam Type

Earth

Surface Area

2

Hydraulic Height

19

Drainage Area

1.05

Nid Storage

18

Structural Height

54

Hazard Potential

High

Foundations

Soil

Nid Height

54
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.