Apache Dam is a gravity dam located in Carter County, Montana. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 22 ft22 ft tall and 2,025 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 Apache Dam
The primary purpose of Apache Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Doi BLM (federal). It impounds the Lone Tree Creek.
The dam stands 22 feet tall and stretches 2,025 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 73 acre-feet, and collects water from a drainage area of 0 square miles.
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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 11/07/2018.
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Location
| State | Montana |
| County | Carter |
| River/Stream | Lone Tree Creek |
| Coordinates | 45.67544, -104.60734 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 22 ft |
| Dam Length | 2,025 ft |
Storage & Hydraulics
| NID Storage | 73 acre-ft |
| Max Storage | 73 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/07/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00607 |
| Federal ID | MT00607 |
| More Info | State Dam Safety Program |