Settling Basin is an earth dam located in Lincoln County, Wyoming, built in 1985. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 24 ft24 ft tall and 540 ft long. 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 Settling Basin
The primary purpose of Settling Basin is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Pacificorp, Naughton Power Plant (public utility). It impounds the Hams Fork-offstream near Hwy. 189.
The dam stands 24 feet tall and stretches 540 feet across, creates a reservoir covering 13 acres, and has a maximum storage capacity of 88 acre-feet. Completed in 1985, the structure is 41 years 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 08/01/2024.
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Location
| State | Wyoming |
| County | Lincoln |
| Nearest City | Hwy. 189 |
| River/Stream | Hams Fork-offstream |
| Coordinates | 41.76194, -110.60306 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 540 ft |
| Year Completed | 1985 (41 years old) |
Storage & Hydraulics
| NID Storage | 88 acre-ft |
| Max Storage | 88 acre-ft |
| Normal Storage | 88 acre-ft |
| Surface Area | 13 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Pacificorp, Naughton Power Plant |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 08/01/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01854 |
| Federal ID | WY01854 |
| More Info | State Dam Safety Program |