Viva Naughton
Viva Naughton is an earth dam located in Lincoln County, Wyoming, built in 1967. It carries a High hazard potential classification and has a fair condition assessment.
About Viva Naughton
The primary purpose of Viva Naughton is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Pacificorp (private). It impounds the Ham's Fork near Frontier.
The dam stands 90 feet tall and stretches 3,200 feet across, creates a reservoir covering 1,460 acres, has a storage capacity of 42,200 acre-feet, and collects water from a drainage area of 235 square miles. Completed in 1967, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 09/13/2022.
At 90 feet, this dam is taller than 98% of all dams in the United States.
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 Wyoming 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 | Wyoming |
| County | Lincoln |
| Nearest City | Frontier |
| River/Stream | Ham's Fork |
| Coordinates | 41.96750, -110.65830 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 90 ft |
| Dam Height | 90 ft |
| Dam Length | 3,200 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 42,200 acre-ft |
| Normal Storage | 42,200 acre-ft |
| Surface Area | 1,460 acres |
| Drainage Area | 235 sq mi |
| Max Discharge | 12,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | PacifiCorp |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 09/13/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WY01281 |
| Federal ID | WY01281 |
| More Info | State Dam Safety Program |