T-diamond #1
T-diamond #1 is an earth dam located in Custer County, Montana, built in 1961. It carries a Low hazard potential classification.
About T-diamond #1
The primary purpose of T-diamond #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 T-diamond Ranch (private). It impounds the Finley Creek near Terry.
The dam stands 22 feet tall and stretches 462 feet across, and has a maximum storage capacity of 109 acre-feet. Completed in 1961, 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 | Terry |
| River/Stream | Finley Creek |
| Coordinates | 46.81330, -105.83890 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 462 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 109 acre-ft |
| Max Storage | 109 acre-ft |
| Normal Storage | 51 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | T-DIAMOND RANCH |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01197 |
| Federal ID | MT01197 |
| More Info | State Dam Safety Program |