Ness #1
Ness #1 is an earth dam located in Powder River County, Montana, built in 1950. It carries a Low hazard potential classification.
About Ness #1
The primary purpose of Ness #1 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 Gordon Ness Trustee (private). It impounds the Little Bobcat Creek near Mizpah.
The dam stands 22 feet tall and stretches 405 feet across, has a maximum storage capacity of 69 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1950, 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 | Powder River |
| Nearest City | Mizpah |
| River/Stream | Little Bobcat Creek |
| Coordinates | 45.76790, -105.45200 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 405 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 69 acre-ft |
| Max Storage | 69 acre-ft |
| Normal Storage | 32 acre-ft |
| Drainage Area | 2 sq mi |
| Max Discharge | 500 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | GORDON NESS TRUSTEE |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01721 |
| Federal ID | MT01721 |
| More Info | State Dam Safety Program |