Stateline Reservoir Reservoir Report

Last Updated: December 4, 2025

Stateline Reservoir is a man-made reservoir located in Utah that was created in the 1950s to store water from the Bear River for irrigation purposes.


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Summary

The reservoir has a capacity of 42,300 acre-feet and is managed by the State of Utah's Division of Water Resources. The reservoir is fed by several surface flows, including the Bear River and the Little Bear River, as well as by snowpack meltwater. The water from the reservoir is primarily used for agricultural irrigation, with some water also being used for recreational activities such as fishing and boating. Despite its importance for agriculture in the area, the reservoir has faced challenges in recent years due to drought and the over-allocation of water rights.

Reservoir Details

Storage 24hr Change 0.25%
Percent of Normal 74%
Minimum 1,183.0 acre-ft
1980-03-03
Maximum 14,437.0 acre-ft
2011-06-30
Average 5,194 acre-ft
Nid_Height 10
Hydraulic_Height 3
Year_Completed 1979
Dam_Height 10
Hazard_Potential High
Structural_Height 10
Primary_Dam_Type Earth
River_Or_Stream EAST FORK SMITH CREEK
Foundations Rock
Nid_Storage 15932
Dam_Length 130
       
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.