Mayfield Irrigation Regulating Reservoir is an earth dam located in Sanpete County, Utah, built in 1984. It carries a Significant hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 1,400 ft long, taller than 68% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Mayfield Irrigation Regulating Reservoir
Mayfield Irrigation Regulating Reservoir is a dam in Sanpete, Utah. The dam is owned by Mayfield Irrigation Company (private).
The dam stands 30 feet tall and stretches 1,400 feet across, and has a maximum storage capacity of 85 acre-feet. Completed in 1984, the structure is 42 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 08/23/2023.
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Location
| State | Utah |
| County | Sanpete |
| Coordinates | 39.11175, -111.68754 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Length | 1,400 ft |
| Year Completed | 1984 (42 years old) |
Storage & Hydraulics
| NID Storage | 85 acre-ft |
| Max Storage | 85 acre-ft |
| Normal Storage | 69 acre-ft |
| Max Discharge | 42 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Mayfield Irrigation Company |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 08/23/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | UT20443 |
| Federal ID | UT20443 |
| More Info | State Dam Safety Program |