Weber Basin Equalizing Reservoir 18.8 Reservoir Report

Last Updated: December 5, 2025

Weber Basin Equalizing Reservoir 18.8, located in Davis County, Utah, is a federal-owned structure managed by the Bureau of Reclamation.


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Summary

Built in 1967, this Earth dam stands at a structural height of 27 feet with a hydraulic height of 23 feet. The reservoir has a storage capacity of 41 acre-feet and serves as part of the Davis-Weber Aqueduct system.

With a controlled spillway type, the reservoir has a high hazard potential and a very high risk assessment rating. While the condition assessment is not currently available, the emergency action plan (EAP) was last revised in June 2020. The reservoir is subject to regular inspections, with the last one conducted in April 2020, to ensure its safety and functionality for water resource management in the region.

The Weber Basin Equalizing Reservoir 18.8 plays a crucial role in water distribution and management within the area, highlighting the importance of proper maintenance and risk management measures. As a key component of the local water infrastructure, this reservoir serves as a vital resource for sustaining water availability and ensuring the resilience of the region's water supply in the face of changing climate conditions.

Year Completed

1967

River Or Stream

OS DAVIS-WEBER AQUEDUCT

Primary Dam Type

Earth

Hydraulic Height

23

Nid Storage

41

Structural Height

27

Hazard Potential

High

Foundations

Rock

Nid Height

27
       
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.