Lost Calf Detention Dam
Lost Calf Detention Dam is a gravity dam located in Carter County, Montana, built in 1966. It carries a Low hazard potential classification and has a unsatisfactory condition assessment.
About Lost Calf Detention Dam
The primary purpose of Lost Calf Detention Dam 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 Doi Blm (federal). It impounds the Boxelder Ck./little Missouri R near Box Elder.
The dam stands 31 feet tall and stretches 1,824 feet across, creates a reservoir covering 83 acres, and has a maximum storage capacity of 653 acre-feet. Completed in 1966, 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. Its condition is rated unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. The most recent inspection on record was 07/25/2020.
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Location
| State | Montana |
| County | Carter |
| Nearest City | Box Elder |
| River/Stream | Boxelder Ck./little Missouri R |
| Coordinates | 45.28383, -104.68452 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 31 ft |
| Dam Length | 1,824 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 653 acre-ft |
| Max Storage | 653 acre-ft |
| Surface Area | 83 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 07/25/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03183 |
| Federal ID | MT03183 |
| More Info | State Dam Safety Program |