Salmon Lake Reservoir Report

Reservoir Report

Washington

Nearby: Conconully Schallow Lake Dam

Last Updated: December 12, 2025

Salmon Lake, located in Conconully, Washington, is a picturesque reservoir primarily used for irrigation purposes.

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Summary

Managed by the Bureau of Reclamation, this federal-owned earth dam stands at a height of 54 feet and was completed in 1920. With a maximum storage capacity of 17,280 acre-feet and a normal storage level of 15,700 acre-feet, the lake covers a surface area of 313 acres and is fed by Salmon Creek OS.

Despite its significance in providing water for agricultural needs, Salmon Lake poses a high hazard potential due to its outdated infrastructure. With a risk assessment rating of moderate (3), the dam has undergone several modifications over the years, including upgrades to its foundation and structural components. While it lacks a current condition assessment, regular inspections are conducted to ensure its safety and integrity, with an emergency action plan in place to address any potential risks.

For water resource and climate enthusiasts, Salmon Lake serves as a vital reservoir in the Okanogan region, highlighting the intersection of human development and environmental conservation. Its historical significance, coupled with its potential risks and management measures, offer a compelling case study in balancing water utilization for human needs while safeguarding against potential hazards. As climate change continues to impact water resources, the management and maintenance of dams like Salmon Lake will be crucial in ensuring sustainable water management practices for future generations.

Years Modified	2001 - Foundation, 2001 - Seismic, 2001 - Structural, 2003 - Structural
Year Completed	1920
Dam Length	1250
Dam Height	54
River Or Stream	SALMON CREEK OS
Primary Dam Type	Earth
Surface Area	313
Hydraulic Height	43
Drainage Area	6
Nid Storage	17280
Structural Height	54
Hazard Potential	High
Foundations	Rock
Nid Height	54

Explore Interactive Map

SALMON LAKE

Reservoir Report • Water Levels • Weather Forecast

December 12, 2025

Years_Modified	2001 - Foundation, 2001 - Seismic, 2001 - Structural, 2003 - Structural
Year_Completed	1920
Dam_Length	1250
Dam_Height	54
River_Or_Stream	SALMON CREEK OS
Primary_Dam_Type	Earth
Surface_Area	313
Hydraulic_Height	43
Drainage_Area	6
Nid_Storage	17280
Structural_Height	54
Hazard_Potential	High
Foundations	Rock
Nid_Height	54

Seasonal Comparison

Weather Forecast

Nearby Streamflow Levels

Okanogan River Near Tonasket 8640.0cfs	8640cfs
Omak Creek Near Omak 7.73cfs	8cfs
Okanogan River At Malott 2420.0cfs	2420cfs
Methow River At Winthrop 4510.0cfs	4510cfs
Chewuch River At Winthrop 587.0cfs	587cfs
Methow River At Twisp 6560.0cfs	6560cfs

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.