Oh No
Oh No is an earth dam located in Dawson County, Montana, built in 1910. It carries a Low hazard potential classification.
About Oh No
The primary purpose of Oh No 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 Clarence A Steffen (private). It impounds the Thirteenmile Creek near Intake.
The dam stands 20 feet tall and stretches 700 feet across, and has a maximum storage capacity of 93 acre-feet. Completed in 1910, the structure is over a century 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.
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Location
| State | Montana |
| County | Dawson |
| Nearest City | Intake |
| River/Stream | Thirteenmile Creek |
| Coordinates | 47.44890, -104.99240 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 700 ft |
| Year Completed | 1910 (116 years old) |
Storage & Hydraulics
| NID Storage | 93 acre-ft |
| Max Storage | 93 acre-ft |
| Normal Storage | 48 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | CLARENCE A STEFFEN |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03154 |
| Federal ID | MT03154 |
| More Info | State Dam Safety Program |