Twin Dam #1
Twin Dam #1 is an earth dam located in Rosebud County, Montana, built in 1959. It carries a Low hazard potential classification.
About Twin Dam #1
The primary purpose of Twin Dam #1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by A Schiffer (private). It impounds the Coyote Creek near Rosebud.
The dam stands 15 feet tall and stretches 200 feet across, has a maximum storage capacity of 67 acre-feet, and collects water from a drainage area of 8 square miles. Completed in 1959, 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 | Rosebud |
| Nearest City | Rosebud |
| River/Stream | Coyote Creek |
| Coordinates | 46.75590, -106.82660 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 200 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 67 acre-ft |
| Max Storage | 67 acre-ft |
| Normal Storage | 30 acre-ft |
| Drainage Area | 8 sq mi |
| Max Discharge | 1,000 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | A SCHIFFER |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01450 |
| Federal ID | MT01450 |
| More Info | State Dam Safety Program |