Upton is an earth dam located in Weston County, Wyoming, built in 1907. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 30 ft30 ft tall and 1,430 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 Upton
The primary purpose of Upton 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 Town of Upton (local government). It impounds the Pine Creek near Edgemont, Sd.
The dam stands 30 feet tall and stretches 1,430 feet across, creates a reservoir covering 37 acres, and has a maximum storage capacity of 500 acre-feet. Completed in 1907, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 06/26/2023.
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Location
| State | Wyoming |
| County | Weston |
| Nearest City | Edgemont, Sd |
| River/Stream | Pine Creek |
| Coordinates | 44.13139, -104.59833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 1,430 ft |
| Year Completed | 1907 (119 years old) |
Storage & Hydraulics
| NID Storage | 500 acre-ft |
| Max Storage | 500 acre-ft |
| Normal Storage | 362 acre-ft |
| Surface Area | 37 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Town of Upton |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/26/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00872 |
| Federal ID | WY00872 |
| More Info | State Dam Safety Program |