Weber Basin Equalizing Reservoir 4.3 Reservoir Report

Last Updated: December 5, 2025

Weber Basin Equalizing Reservoir 4.3, located in Davis, Utah, is an impressive federal-owned structure managed by the Bureau of Reclamation.


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Summary

Built in 1962, this Earth dam stands at a structural height of 11 feet and has a hydraulic height of 8 feet. It serves as a crucial component of the OS DAVIS-WEBER AQUEDUCT, ensuring the efficient distribution of water resources in the area.

With a storage capacity of 10 acre-feet, this reservoir plays a vital role in water management and regulation. Its spillway, classified as controlled, enhances safety measures in case of excess water flow. Despite being rated as having a high hazard potential, the risk assessment indicates that the reservoir is well-maintained, with emergency action plans in place. The reservoir is inspected regularly by the Bureau of Reclamation to ensure its structural integrity and functionality, with the last inspection conducted in April 2020.

Weber Basin Equalizing Reservoir 4.3 is an essential infrastructure that contributes to the sustainable management of water resources in the region. Its strategic location and design underscore its importance in maintaining water supply reliability and mitigating potential risks associated with water distribution. As climate change continues to impact water availability and quality, reservoirs like this play a critical role in adapting to changing environmental conditions and ensuring the resilience of water infrastructure for future generations.

Year Completed

1962

River Or Stream

OS DAVIS-WEBER AQUEDUCT

Primary Dam Type

Earth

Hydraulic Height

8

Nid Storage

10

Structural Height

11

Hazard Potential

High

Foundations

Rock

Nid Height

11
       
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.