Pioneer is an earth dam located in Sweet Grass County, Montana, built in 1968. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 200 ft long, taller than 50% 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 Pioneer
Pioneer is a dam in Sweet Grass, Montana. The dam is owned by Clayton Ranch Inc (private). It impounds the Pioneer Ditch near Greycliff.
The dam stands 25 feet tall and stretches 200 feet across, has a maximum storage capacity of 64 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1968, 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 | Sweet Grass |
| Nearest City | Greycliff |
| River/Stream | Pioneer Ditch |
| Coordinates | 45.81167, -109.86009 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 200 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 64 acre-ft |
| Max Storage | 64 acre-ft |
| Normal Storage | 44 acre-ft |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | Clayton Ranch Inc |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02710 |
| Federal ID | MT02710 |
| More Info | State Dam Safety Program |