Settling Basin
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.
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 |