Jordanelle Reservoir Report

Last Updated: December 5, 2025

Jordanelle, located in Heber, Utah, is a federal water supply reservoir managed by the Bureau of Reclamation.


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Summary

Completed in 1993, the primary purpose of the earth dam structure is to provide water storage for the surrounding area. With a maximum storage capacity of 363,000 acre-feet, Jordanelle plays a crucial role in supporting water supply needs in Wasatch County.

The dam stands at a hydraulic height of 296 feet and a structural height of 391 feet, with a length of 3,820 feet. Despite its high hazard potential, the condition assessment of the dam is currently not available. The reservoir is situated on the Provo River and has a maximum discharge capacity of 3,800 cubic feet per second. While the dam has not been modified in recent years, regular inspections by the Bureau of Reclamation help ensure its continued safety and functionality.

Overall, Jordanelle serves as a vital water resource for the region, offering essential water supply benefits while maintaining a focus on safety and regulatory compliance. As climate change continues to impact water availability and usage patterns, the management of reservoirs like Jordanelle will be crucial in meeting the water needs of communities in the face of evolving environmental challenges.

Year Completed

1993

Dam Length

3820

River Or Stream

PROVO

Primary Dam Type

Earth

Hydraulic Height

296

Nid Storage

363000

Structural Height

391

Hazard Potential

High

Nid Height

391
       
Seasonal Comparison

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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.