Alton Reservoir
Alton Reservoir is an earth dam located in Kane County, Utah. It carries a High hazard potential classification and has a poor condition assessment.
About Alton Reservoir
The primary purpose of Alton Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Heaton Brothers Llc (private).
The dam stands 21 feet tall and stretches 850 feet across, and has a maximum storage capacity of 41 acre-feet.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 07/11/2023.
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 | Kane |
| Coordinates | 37.44908, -112.47967 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Length | 850 ft |
Storage & Hydraulics
| NID Storage | 41 acre-ft |
| Max Storage | 41 acre-ft |
| Normal Storage | 36 acre-ft |
| Max Discharge | 4 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Heaton Brothers LLC |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 07/11/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | UT53827 |
| Federal ID | UT53827 |
| More Info | State Dam Safety Program |