Washington Lake Reservoir Report

Last Updated: December 4, 2025

Washington Lake in Utah is a natural freshwater lake situated in the southwestern Uinta Mountains.


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Summary

The lake was formed by a glacial activity that left behind a bowl-shaped basin. Historically, Washington Lake has been an important source of water for the surrounding agricultural lands. The lake's hydrology is primarily fed by snowmelt and precipitation, which cause fluctuations in the water levels. The lake is also a critical source of water for the Duchesne River, which provides drinking water, irrigation, and recreational opportunities to the local communities. Additionally, the lake is a popular destination for recreational activities such as fishing, boating, and camping. The surrounding areas are home to a variety of wildlife, including elk, deer, and black bears. Overall, Washington Lake is a vital resource for both the natural ecosystem and human communities in the region.

Reservoir Details

Storage 24hr Change 0.0%
Percent of Normal 122%
Minimum 138.0 acre-ft
2003-10-01
Maximum 2,448.2 acre-ft
2014-06-24
Average 1,150 acre-ft
Nid_Height 44
Hydraulic_Height 37
Primary_Dam_Type Earth
Drainage_Area 3
Year_Completed 1910
Dam_Height 44
Structural_Height 43
River_Or_Stream UPPER PROVO RIVER
Hazard_Potential High
Nid_Storage 2705
Dam_Length 775
       
Seasonal Comparison
Storage Levels
Storage Levels
Pool Elevation Levels
Total Release Levels
Inflow Levels

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.