Manderfield (a.k.a. Beaver)
Manderfield (a.k.a. Beaver) is an earth dam located in Beaver County, Utah, built in 1937. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Manderfield (a.k.a. Beaver)
The primary purpose of Manderfield (a.k.a. Beaver) is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Manderfield Reservoir & Irrigation Co. (private). It impounds the Indian Creek near Manderfield.
The dam stands 35 feet tall and stretches 430 feet across, has a maximum storage capacity of 524 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1937, the structure is well-established, with more than 75 years of service.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 06/21/2023.
At 35 feet, this dam is taller than 82% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Utah dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Utah |
| County | Beaver |
| Nearest City | Manderfield |
| River/Stream | Indian Creek |
| Coordinates | 38.42683, -112.48077 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Length | 430 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 524 acre-ft |
| Max Storage | 524 acre-ft |
| Normal Storage | 388 acre-ft |
| Drainage Area | 2 sq mi |
| Max Discharge | 70 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | MANDERFIELD RESERVOIR & IRRIGATION CO. |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/21/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | UT00194 |
| Federal ID | UT00194 |
| More Info | State Dam Safety Program |