Donna is an earth dam located in Campbell County, Wyoming, built in 1956. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 31 ft31 ft tall and 325 ft long, taller than 72% of U.S. dams with a recorded height. 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 Donna
The primary purpose of Donna is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Trail Creek Grazing Assoc. C/o Bob Tarver (private). It impounds the Trail Creek near Powderville, Mt.
The dam stands 31 feet tall and stretches 325 feet across, creates a reservoir covering 22 acres, has a maximum storage capacity of 308 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1956, the structure is well into its service life at over 50 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 06/28/2024.
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Location
| State | Wyoming |
| County | Campbell |
| Nearest City | Powderville, Mt |
| River/Stream | Trail Creek |
| Coordinates | 44.95611, -105.22389 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 325 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 308 acre-ft |
| Max Storage | 308 acre-ft |
| Normal Storage | 177 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 6 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Trail Creek Grazing Assoc. C/o Bob Tarver |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/28/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01028 |
| Federal ID | WY01028 |
| More Info | State Dam Safety Program |