T L Johnson #1
T L Johnson #1 is an earth dam located in Rosebud County, Montana, built in 1957. It carries a Low hazard potential classification.
About T L Johnson #1
The primary purpose of T L Johnson #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 Ted Johnson (private). It impounds the Tr-big Porcupine Creek near Forsyth.
The dam stands 22 feet tall and stretches 275 feet across, and has a maximum storage capacity of 152 acre-feet. Completed in 1957, 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 | Forsyth |
| River/Stream | Tr-big Porcupine Creek |
| Coordinates | 46.43200, -106.93240 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 275 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 152 acre-ft |
| Max Storage | 152 acre-ft |
| Normal Storage | 83 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | TED JOHNSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01918 |
| Federal ID | MT01918 |
| More Info | State Dam Safety Program |