Simplot Phosphates Tailings Dam is an earth dam located in Uintah County, Utah, built in 1973. It carries a Significant hazard potential classification.
Dam profile
NID height · 230 ft230 ft tall and 540 ft long, taller than 99% of U.S. dams with a recorded height. Height is drawn to scale against the Statue of Liberty, 305 ft ground to torch; the profile is a generic embankment section and the water level is illustrative.
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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Location
| State | Utah |
| County | Uintah |
| Nearest City | None - Drains to Gre |
| River/Stream | Trib to Big Brushy Creek |
| Coordinates | 40.59686, -109.48236 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 230 ft |
| Dam Length | 540 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 3,400 acre-ft |
| Max Storage | 3,400 acre-ft |
| Normal Storage | 2,100 acre-ft |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Owner | Simplot Phosphates LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 07/20/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | UT00410 |
| Federal ID | UT00410 |
| More Info | State Dam Safety Program |