Iron Mountain
Iron Mountain is an earth dam located in Albany County, Wyoming, built in 1910. It carries a Low hazard potential classification and has a fair condition assessment.
About Iron Mountain
The primary purpose of Iron Mountain is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Don & Tamara Willis (private). It impounds the South Sybille Creek near Torrington.
The dam stands 35 feet tall and stretches 270 feet across, creates a reservoir covering 7 acres, and has a maximum storage capacity of 242 acre-feet. Completed in 1910, 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 06/15/2023.
At 35 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Wyoming |
| County | Albany |
| Nearest City | Torrington |
| River/Stream | South Sybille Creek |
| Coordinates | 41.63000, -105.32833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 270 ft |
| Year Completed | 1910 (116 years old) |
Storage & Hydraulics
| NID Storage | 242 acre-ft |
| Max Storage | 242 acre-ft |
| Normal Storage | 168 acre-ft |
| Surface Area | 7 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | DON & TAMARA WILLIS |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/15/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00032 |
| Federal ID | WY00032 |
| More Info | State Dam Safety Program |