Atlas Dam is a gravity dam located in Valley County, Montana, built in 1984. It carries a Low hazard potential classification.
Dam profile
NID height · 18 ft18 ft tall and 409 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Atlas Dam
The primary purpose of Atlas Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Doi BLM (federal). It impounds the Milk River near Tampico.
The dam stands 18 feet tall and stretches 409 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 51 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1984, the structure is 42 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. The most recent inspection on record was 07/14/2011. That was over 15 years ago.
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Location
| State | Montana |
| County | Valley |
| Nearest City | Tampico |
| River/Stream | Milk River |
| Coordinates | 48.51216, -106.72118 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 18 ft |
| Dam Length | 409 ft |
| Year Completed | 1984 (42 years old) |
Storage & Hydraulics
| NID Storage | 51 acre-ft |
| Max Storage | 51 acre-ft |
| Normal Storage | 51 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/14/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03885 |
| Federal ID | MT03885 |
| More Info | State Dam Safety Program |