Wsr Dairy Waste Lagoon Reservoir Report

Last Updated: December 15, 2025

Wsr Dairy Waste Lagoon in Snohomish, Washington, is a state-regulated facility designed by Gray & Osborne for managing dairy waste offstream from the Snohomish River.


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Summary

Completed in 1998, this Earth dam structure has a hydraulic height of 17 feet and a structural height of 14 feet, providing a maximum storage capacity of 82 acre-feet. With a low hazard potential, the facility has not been rated for condition assessment and lacks emergency action preparedness.

Owned and regulated by the Washington Department of Ecology, Wsr Dairy Waste Lagoon serves a primary purpose of waste management. Despite being in operation for over two decades, the facility has not undergone recent inspections and lacks essential emergency preparedness measures. With a normal storage capacity of 61 acre-feet and a dam length of 2250 feet, this lagoon plays a significant role in managing dairy waste in the region.

Water resource and climate enthusiasts interested in sustainable waste management practices may find Wsr Dairy Waste Lagoon's design and operation intriguing. As one of the state-regulated facilities in Washington, this Earth dam structure highlights the importance of proper waste management in agriculture. With a focus on environmental protection and regulatory compliance, Wsr Dairy Waste Lagoon contributes to the conservation of water resources in the Snohomish area.

Year Completed

1998

Dam Length

2250

River Or Stream

Snohomish River - offstream

Primary Dam Type

Earth

Hydraulic Height

17

Nid Storage

82

Structural Height

14

Hazard Potential

Low

Nid Height

17
       
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.