Moab Salt Potash Stockpile Dam is an earth dam located in Grand County, Utah, built in 1962. It carries a Significant hazard potential classification.
Dam profile
NID height · 70 ft70 ft tall and 430 ft long, taller than 96% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Moab Salt Potash Stockpile Dam
The primary purpose of Moab Salt Potash Stockpile Dam is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Pcs Potash (private). It impounds the Offstream--colorado River near Page Ar,via Col.riv.
The dam stands 70 feet tall and stretches 430 feet across, has a maximum storage capacity of 1,200 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1962, 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 05/04/2022.
At 70 feet, this dam is taller than 96% of all dams in the United States.
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Location
| State | Utah |
| County | Grand |
| Nearest City | Page Ar,via Col.riv |
| River/Stream | Offstream--colorado River |
| Coordinates | 38.52135, -109.66240 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 70 ft |
| Dam Length | 430 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 1,200 acre-ft |
| Max Storage | 1,200 acre-ft |
| Normal Storage | 896 acre-ft |
| Drainage Area | 3 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Tailings |
| Owner | Pcs Potash |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 05/04/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | UT00438 |
| Federal ID | UT00438 |
| More Info | State Dam Safety Program |