Dam Report

Weber Basin Equalizing Reservoir 18 Lower dam

Utah, USA Os Davis-Weber Aqueduct Hazard High
Today high
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Tonight low
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Dam height
22ft
Hazard rating
High
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Weber Basin Equalizing Reservoir 18 Lower -- None dam
Weber Basin Equalizing Reservoir 18 Lower None · Os Davis-Weber Aqueduct
About this dam

Weber Basin Equalizing Reservoir 18 Lower

Weber Basin Equalizing Reservoir 18 Lower, located in Davis County, Utah, is a Federal-owned structure managed by the Bureau of Reclamation. Completed in 1960, this Earth dam stands at a hydraulic height of 20 feet and a structural height of 22 feet, with a storage capacity of 14.5 acre-feet. The reservoir is part of the Weber Basin Project, serving as a critical component in the region's water supply system.

With a controlled spillway and a high hazard potential, the reservoir plays a vital role in flood control and water management along the Os Davis-Weber Aqueduct. Despite its age, the dam's condition assessment is currently listed as "Not Available," highlighting the need for ongoing monitoring and maintenance. In the event of an emergency, an Emergency Action Plan (EAP) has been prepared, ensuring that necessary protocols are in place to mitigate risks and protect nearby communities.

As water resource and climate enthusiasts, the Weber Basin Equalizing Reservoir 18 Lower serves as a fascinating example of infrastructure essential for balancing water supply and demand in arid regions. Its history, design, and purpose underscore the intricate interplay between human intervention and natural systems, emphasizing the importance of sustainable water management practices in the face of evolving climate challenges.

StateNone
River / streamOs Davis-Weber Aqueduct
NID IDUT10207
Owner typeFederal
Dam typeEarth
Year built1960
Max storage15 AF
Hazard potentialHigh
ConditionNot Available
Last inspectionThu, 30 Apr 2020 00:00:00 GMT

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.
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.
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.

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, environmental 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.
Detailed forecast

Plan around the weather

Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Track Weber Basin Equalizing Reservoir 18 Lower in the Snoflo app

Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.

FAQ

About Weber Basin Equalizing Reservoir 18 Lower

Where does the data for Weber Basin Equalizing Reservoir 18 Lower come from?

Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.

How often is the report updated?

NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.

What does the High hazard rating mean?

The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.

What's "% of normal"?

The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).

Can I get alerts when storage crosses a threshold?

Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.

Premium feature

Favorites and alerts are part of Snoflo Premium. Save reservoirs, set storage thresholds, and get push notifications when conditions cross.

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Manage alerts in the Snoflo app

Custom alerts are configured in the iOS app -- favorite this dam, set a threshold, and you'll get a push the moment conditions cross.

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