Burnt Ridge Surface Impoundment Reservoir Report

Last Updated: December 13, 2025

Burnt Ridge Surface Impoundment, located in Lewis County, Washington, is a privately owned earth dam completed in 1998 with a primary purpose of "Other." The dam, standing at a hydraulic height of 14 feet and a length of 660 feet, has a normal storage capacity of 9.2 acre-feet and a maximum storage of 10 acre-feet.


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Summary

It serves as a critical resource for the surrounding area as a water source for the tributary of Mill Creek.

The dam is regulated by the Washington Department of Ecology and has undergone inspections as recently as July 2017, with a fair condition assessment. With a significant hazard potential, the dam's emergency action plan (EAP) was last revised in April 2021, ensuring that proper risk management measures are in place. Despite its condition assessment, the dam continues to play a vital role in water resource management in the region, highlighting the importance of regular inspections and maintenance to ensure its continued functionality.

As a private structure, Burnt Ridge Surface Impoundment remains a key component of the water infrastructure in Lewis County, Washington. Its strategic location and storage capacity make it a valuable asset for managing water resources in the area. Climate enthusiasts and water resource specialists alike recognize the importance of maintaining and monitoring structures like this dam to ensure the safety and sustainability of water supplies in the face of changing climatic conditions.

Year Completed

1998

Dam Length

660

River Or Stream

trib of Mill Creek

Primary Dam Type

Earth

Hydraulic Height

14

Drainage Area

0.05

Nid Storage

10

Structural Height

14

Hazard Potential

Significant

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.