Weber Basin Equalizing Reservoir 18.9 Reservoir Report
Last Updated: January 31, 2026
Weber Basin Equalizing Reservoir 18.9, located in Davis County, Utah, is a critical federal water resource managed by the Bureau of Reclamation.
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Summary
Completed in 1960, this earth dam structure stands at a hydraulic height of 20 feet and a structural height of 22 feet, with a maximum storage capacity of 25 acre-feet. The reservoir serves as a key component of the OS Davis-Weber Aqueduct, ensuring a reliable water supply for the region.
Despite its high hazard potential, the condition assessment of Weber Basin Equalizing Reservoir 18.9 is currently not available. However, regular inspections are carried out by the Bureau of Reclamation to ensure the safety and integrity of the dam. The reservoir's Emergency Action Plan was last revised in June 2020, indicating preparedness for potential risks. With a risk assessment rating of "Very High (1)," the management of this water resource is of utmost importance to protect surrounding communities and infrastructure.
With a controlled spillway and no associated locks, Weber Basin Equalizing Reservoir 18.9 plays a vital role in water management and distribution in the region. As climate change continues to impact water resources, the proper maintenance and monitoring of this reservoir are essential to safeguard against potential emergencies and ensure a sustainable water supply for the future.
Year Completed |
1960 |
River Or Stream |
OS DAVIS-WEBER AQUEDUCT |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
25 |
Structural Height |
22 |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
22 |
Seasonal Comparison
Hourly Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Weber Basin Equalizing Reservoir 18.9
Source To Red Butte Reservoir