Beitey Lake Dam Reservoir Report
Last Updated: December 6, 2025
Beitey Lake Dam in Valley, Washington, is a private-owned earth dam completed in 1934 primarily for recreational purposes.
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Summary
With a height of 17 feet and a structural height of 15 feet, this dam holds a maximum storage capacity of 220 acre-feet and covers a surface area of 24.2 acres. Situated on the Tr-Colville River, this dam serves as a vital water resource for the region, with a normal storage capacity of 100 acre-feet and a drainage area of 3.1 square miles.
Despite its historical significance and recreational value, Beitey Lake Dam poses a high hazard potential with a poor condition assessment. The dam has been regulated and inspected by the Washington Department of Ecology, emphasizing its importance in ensuring public safety and environmental protection. The last inspection in November 2021 highlighted the need for improved maintenance and risk management measures to mitigate potential hazards.
As climate change continues to impact water resources and infrastructure, Beitey Lake Dam stands as a critical structure in need of ongoing monitoring and maintenance to ensure its long-term integrity and safety. With its location in a high-risk area and poor condition assessment, stakeholders must prioritize proactive measures to address potential risks and safeguard the surrounding community and ecosystem.
Year Completed |
1934 |
Dam Length |
140 |
River Or Stream |
Tr-Colville River |
Primary Dam Type |
Earth |
Surface Area |
24.2 |
Hydraulic Height |
17 |
Drainage Area |
3.1 |
Nid Storage |
220 |
Structural Height |
15 |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Beitey Lake Dam