Erickson Dam No 2 Reservoir Report

Last Updated: December 15, 2025

Erickson Dam No 2, located in San Juan, Washington, stands as a testament to the importance of water resource management in the region.


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Summary

Built in 1964 for recreational purposes, this earth dam spans 218 feet in length and reaches a hydraulic height of 14 feet. With a storage capacity of 53 acre-feet, the dam serves as a vital resource for the local community, providing a surface area of 47 acres for recreational activities.

Managed by a private owner, Erickson Dam No 2 is regulated by the Washington Department of Ecology to ensure its safety and compliance with state standards. Although the dam is classified as having a low hazard potential, regular inspections are conducted to monitor its condition and ensure the safety of surrounding areas. While the dam has not been rated for its current condition, measures are in place to address any potential risks and emergencies that may arise.

Located along Tr-False Bay, Erickson Dam No 2 offers a serene backdrop for outdoor enthusiasts and climate advocates alike. With its stone core and soil foundation, this dam serves as a reminder of the delicate balance between water resource management and environmental conservation in the region. As we continue to navigate the challenges of climate change, dams like Erickson Dam No 2 play a crucial role in safeguarding our water resources for generations to come.

Year Completed

1964

Dam Length

218

River Or Stream

Tr-False Bay

Primary Dam Type

Earth

Surface Area

47

Hydraulic Height

14

Drainage Area

0.3

Nid Storage

53

Structural Height

12

Hazard Potential

Low

Foundations

Soil

Nid Height

14
       
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.