Trail Lake Control Dam
Trail Lake Control Dam is an earth dam located in Fremont County, Wyoming, built in 1947. It carries a Low hazard potential classification and has a poor condition assessment.
About Trail Lake Control Dam
The primary purpose of Trail Lake Control Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Diamond G Ranch (private). It impounds the Trail Lake Creek near Dubois.
The dam stands 7 feet tall and stretches 340 feet across, creates a reservoir covering 37 acres, and has a maximum storage capacity of 310 acre-feet. Completed in 1947, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 08/13/2024.
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Location
| State | Wyoming |
| County | Fremont |
| Nearest City | Dubois |
| River/Stream | Trail Lake Creek |
| Coordinates | 43.73194, -109.80889 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 7 ft |
| Dam Height | 7 ft |
| Dam Length | 340 ft |
| Year Completed | 1947 (79 years old) |
Storage & Hydraulics
| NID Storage | 310 acre-ft |
| Max Storage | 310 acre-ft |
| Normal Storage | 92 acre-ft |
| Surface Area | 37 acres |
| Max Discharge | 280 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | DIAMOND G RANCH |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 08/13/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01360 |
| Federal ID | WY01360 |
| More Info | State Dam Safety Program |