R-janssen #1
R-janssen #1 is an earth dam located in Powder River County, Montana, built in 1953. It carries a Low hazard potential classification.
About R-janssen #1
The primary purpose of R-janssen #1 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Richard Janssen Et Al (private). It impounds the Hay Creek near Mizpah.
The dam stands 24 feet tall and stretches 360 feet across, and has a maximum storage capacity of 137 acre-feet. Completed in 1953, 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 | Powder River |
| Nearest City | Mizpah |
| River/Stream | Hay Creek |
| Coordinates | 45.73710, -105.54890 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 360 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 137 acre-ft |
| Max Storage | 137 acre-ft |
| Normal Storage | 79 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | RICHARD JANSSEN ET AL |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01842 |
| Federal ID | MT01842 |
| More Info | State Dam Safety Program |