Dmad
Dmad is an earth dam located in Millard County, Utah, built in 1959. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Dmad
The primary purpose of Dmad is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Dmad Company (private). It impounds the Sevier River near Delta.
The dam stands 37 feet tall and stretches 1,200 feet across, has a maximum storage capacity of 21,887 acre-feet, and collects water from a drainage area of 7,270 square miles. Completed in 1959, the structure is well into its service life at over 50 years old.
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 05/16/2023.
At 37 feet, this dam is taller than 84% 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 | Millard |
| Nearest City | Delta |
| River/Stream | Sevier River |
| Coordinates | 39.39517, -112.48411 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Length | 1,200 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 21,887 acre-ft |
| Max Storage | 21,887 acre-ft |
| Normal Storage | 7,735 acre-ft |
| Drainage Area | 7,270 sq mi |
| Max Discharge | 950 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | DMAD COMPANY |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/16/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | UT00080 |
| Federal ID | UT00080 |
| More Info | State Dam Safety Program |