Miller Reservoir Dam Reservoir Report

Last Updated: December 14, 2025

Miller Reservoir Dam, located in Stevens County, Washington, was completed in 1959 and stands as a crucial structure for irrigation and recreation purposes.


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Summary

The earth dam, with a hydraulic height of 14 feet and a structural height of 13 feet, holds a maximum storage capacity of 98 acre-feet and covers a surface area of 10 acres. Situated on Kline Creek-Offstream, the dam is regulated by the Washington Department of Ecology and undergoes regular state inspection and enforcement to ensure its safety and functionality.

With a low hazard potential and a condition assessment that is currently not rated, Miller Reservoir Dam contributes significantly to the local water resource management and recreational activities. Owned privately, the dam serves as a key feature in the surrounding landscape, offering both practical benefits for irrigation and a picturesque setting for outdoor enthusiasts. The dam's location in the Congressional District 05 of Washington adds to its significance, overseen by Representative Cathy McMorris Rodgers.

As a focal point in the region, Miller Reservoir Dam provides a vital source of water for both agricultural needs and leisure activities, showcasing the intersection of water resource management and climate adaptation. With a design focused on sustainability and functionality, the dam stands as a testament to effective water infrastructure development in the Pacific Northwest. As climate change continues to impact water resources, structures like Miller Reservoir Dam play a crucial role in maintaining water security and supporting the local community's needs.

Year Completed

1959

Dam Length

200

River Or Stream

Kline Creek-Offstream

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

14

Drainage Area

0.2

Nid Storage

98

Structural Height

13

Hazard Potential

Low

Foundations

Unlisted/Unknown

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.