Weber Basin Equalizing Reservoir 19.5 Upper Reservoir Report

Last Updated: December 5, 2025

Weber Basin Equalizing Reservoir 19.5 Upper, located in Davis County, Utah, is a significant water resource managed by the Bureau of Reclamation.


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Summary

Constructed in 1960, this federal-owned earth dam plays a crucial role in regulating flow along the OS DACIS-Weber Aqueduct. With a hydraulic height of 20 feet and a structural height of 22 feet, this reservoir has a storage capacity of 21 acre-feet, serving as a key component of the regional water infrastructure.

Despite its high hazard potential, the condition assessment of Weber Basin Equalizing Reservoir 19.5 Upper is currently not available, highlighting the importance of regular inspections and maintenance. The Emergency Action Plan (EAP) for this reservoir was last revised in June 2020, emphasizing the need for proactive risk management measures. The reservoir's risk assessment categorizes it as having a very high risk level, underscoring the critical need for preparedness and adherence to safety guidelines to mitigate potential hazards.

For water resource and climate enthusiasts, Weber Basin Equalizing Reservoir 19.5 Upper represents a vital piece of infrastructure within the broader water management system in Utah. Its strategic location and role in regulating water flow make it a key asset for ensuring water security and supply reliability in the region. As efforts continue to monitor and maintain the reservoir's condition, it serves as a reminder of the ongoing importance of sustainable water resource management in the face of evolving climate challenges.

Year Completed

1960

River Or Stream

OS DACIS-WEBER AQUEDUCT

Primary Dam Type

Earth

Hydraulic Height

20

Nid Storage

21

Structural Height

22

Hazard Potential

High

Foundations

Rock

Nid Height

22
       
Seasonal Comparison

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.