Aldebaran is an earth dam located in Pondera County, Montana, built in 1920. It carries a Significant hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 200 ft long, taller than 80% 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 Aldebaran
The primary purpose of Aldebaran 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 Michael Moore (private). It impounds the Tr Little Flat Coulee near Ledger.
The dam stands 35 feet tall and stretches 200 feet across, and has a maximum storage capacity of 97 acre-feet. Completed in 1920, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Montana |
| County | Pondera |
| Nearest City | Ledger |
| River/Stream | Tr Little Flat Coulee |
| Coordinates | 48.26770, -111.89870 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 200 ft |
| Year Completed | 1920 (106 years old) |
Storage & Hydraulics
| NID Storage | 97 acre-ft |
| Max Storage | 97 acre-ft |
| Normal Storage | 74 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Michael Moore |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03509 |
| Federal ID | MT03509 |
| More Info | State Dam Safety Program |