Three Mile is an earth dam located in Jackson County, Colorado, built in 1934. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 16 ft16 ft tall and 346 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 Three Mile
The primary purpose of Three Mile is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Trophy Mountain Ranch (matheson, Monte) (private). It impounds the Three Mile Creek-tr near Saratoga, Wyo.
The dam stands 16 feet tall and stretches 346 feet across, creates a reservoir covering 5 acres, and has a maximum storage capacity of 64 acre-feet. Completed in 1934, the structure is well-established, with more than 75 years of service.
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 10/26/2016.
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Location
| State | Colorado |
| County | Jackson |
| Nearest City | Saratoga, Wyo |
| River/Stream | Three Mile Creek-tr |
| Coordinates | 40.95834, -106.42557 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 346 ft |
| Year Completed | 1934 (92 years old) |
Storage & Hydraulics
| NID Storage | 64 acre-ft |
| Max Storage | 64 acre-ft |
| Normal Storage | 49 acre-ft |
| Surface Area | 5 acres |
| Max Discharge | 137 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Trophy Mountain Ranch (matheson, Monte) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/26/2016 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO01944 |
| Federal ID | CO01944 |
| More Info | State Dam Safety Program |