Simplot Phosphates Tailings Dam

Simplot Phosphates Tailings Dam is an earth dam located in Uintah County, Utah, built in 1973. It carries a Significant hazard potential classification.

About Simplot Phosphates Tailings Dam

Simplot Phosphates Tailings Dam is a dam in Uintah, Utah. The dam is owned by Simplot Phosphates Llc (private). It impounds the Trib To Big Brushy Creek near None - Drains To Gre.

The dam stands 230 feet tall and stretches 540 feet across, has a maximum storage capacity of 3,400 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1973, the structure is well into its service life at over 50 years old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. An emergency action plan is in place for this dam. The most recent inspection on record was 07/20/2022.

At 230 feet, this dam is taller than 99% of all dams in the United States.

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Significant HazardNot Rated ConditionEmergency Action Plan: Yes

Location

StateUtah
CountyUintah
Nearest CityNone - Drains To Gre
River/StreamTrib To Big Brushy Creek
Coordinates40.59686, -109.48236

Physical Characteristics

Dam TypeEarth
NID Height230 ft
Dam Length540 ft
Year Completed1973 (53 years old)

Storage & Hydraulics

NID Storage3,400 acre-ft
Max Storage3,400 acre-ft
Normal Storage2,100 acre-ft
Drainage Area1 sq mi

Ownership & Safety

OwnerSIMPLOT PHOSPHATES LLC
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot Rated
Last Inspection07/20/2022
Emergency Action PlanYes

Identifiers

NID IDUT00410
Federal IDUT00410
More InfoState Dam Safety Program

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