Stephen #1
Stephen #1 is an earth dam located in Musselshell County, Montana, built in 1960. It carries a Low hazard potential classification.
About Stephen #1
The primary purpose of Stephen #1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Stephen S Obrien (private). It impounds the Dry Fork Hawk Creek near Musselshell.
The dam stands 15 feet tall and stretches 225 feet across, has a maximum storage capacity of 55 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1960, 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.
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Location
| State | Montana |
| County | Musselshell |
| Nearest City | Musselshell |
| River/Stream | Dry Fork Hawk Creek |
| Coordinates | 46.28176, -108.07928 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 225 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 55 acre-ft |
| Max Storage | 55 acre-ft |
| Normal Storage | 22 acre-ft |
| Drainage Area | 7 sq mi |
| Max Discharge | 300 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | STEPHEN S OBRIEN |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02332 |
| Federal ID | MT02332 |
| More Info | State Dam Safety Program |