Rafferty #5
Rafferty #5 is an earth dam located in Custer County, Montana, built in 1960. It carries a Low hazard potential classification.
About Rafferty #5
The primary purpose of Rafferty #5 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by June F Rafferty (private). It impounds the Mizpah Creek near Mizpah.
The dam stands 20 feet tall and stretches 1,595 feet across, and has a maximum storage capacity of 459 acre-feet. 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 | Custer |
| Nearest City | Mizpah |
| River/Stream | Mizpah Creek |
| Coordinates | 45.86570, -105.39430 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 1,595 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 459 acre-ft |
| Max Storage | 459 acre-ft |
| Normal Storage | 167 acre-ft |
Ownership & Safety
| Purpose | Irrigation |
| Owner | JUNE F RAFFERTY |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01711 |
| Federal ID | MT01711 |
| More Info | State Dam Safety Program |