One Mile
One Mile is an earth dam located in Laramie County, Wyoming, built in 1907. It carries a Significant hazard potential classification and has a poor condition assessment.
About One Mile
The primary purpose of One Mile is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Warren Livestock, Llc (private). It impounds the N Lodge Pole Creek Offstream near Us Hwy 85.
The dam stands 35 feet tall and stretches 2,130 feet across, creates a reservoir covering 212 acres, and has a maximum storage capacity of 2,875 acre-feet. Completed in 1907, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 09/11/2025.
At 35 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Wyoming |
| County | Laramie |
| Nearest City | Us Hwy 85 |
| River/Stream | N Lodge Pole Creek Offstream |
| Coordinates | 41.30500, -104.72500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 2,130 ft |
| Year Completed | 1907 (119 years old) |
Storage & Hydraulics
| NID Storage | 2,875 acre-ft |
| Max Storage | 2,875 acre-ft |
| Normal Storage | 2,179 acre-ft |
| Surface Area | 212 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | WARREN LIVESTOCK, LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 09/11/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00051 |
| Federal ID | WY00051 |
| More Info | State Dam Safety Program |