Olson, Oscar (meagher)
Olson, Oscar (meagher) is an earth dam located in Meagher County, Montana, built in 1959. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Olson, Oscar (meagher)
The primary purpose of Olson, Oscar (meagher) is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Hank Brewer, Sarah Reinhardt (private). It impounds the Tr-south Fork Smith River near White Sulphur Springs.
The dam stands 40 feet tall and stretches 465 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 291 acre-feet, and collects water from a drainage area of 3,300 square miles. Completed in 1959, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 06/17/2021.
At 40 feet, this dam is taller than 87% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Montana dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Meagher |
| Nearest City | White Sulphur Springs |
| River/Stream | Tr-south Fork Smith River |
| Coordinates | 46.36880, -110.73240 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 465 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 291 acre-ft |
| Max Storage | 291 acre-ft |
| Normal Storage | 256 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 3,300 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | HANK BREWER, SARAH REINHARDT |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/17/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MT00054 |
| Federal ID | MT00054 |
| More Info | State Dam Safety Program |