Underdal #2
Underdal #2 is an earth dam located in Toole County, Montana, built in 1938. It carries a Low hazard potential classification.
About Underdal #2
The primary purpose of Underdal #2 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Ted R Underdal (private). It impounds the Timber Coulee near Loma.
The dam stands 25 feet tall and stretches 300 feet across, and has a maximum storage capacity of 90 acre-feet. Completed in 1938, the structure is well-established, with more than 75 years of service.
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.
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Location
| State | Montana |
| County | Toole |
| Nearest City | Loma |
| River/Stream | Timber Coulee |
| Coordinates | 48.28370, -111.30020 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 300 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 90 acre-ft |
| Max Storage | 90 acre-ft |
| Normal Storage | 46 acre-ft |
Ownership & Safety
| Purpose | Recreation |
| Owner | TED R UNDERDAL |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00421 |
| Federal ID | MT00421 |
| More Info | State Dam Safety Program |