Gollaher #2 is an earth dam located in Cascade County, Montana, built in 1930. It carries a Low hazard potential classification.
Dam profile
NID height · 18 ft18 ft tall and 300 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Gollaher #2
The primary purpose of Gollaher #2 is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Gollaher Ranch Co. (private). It impounds the Tr-bird Creek near Ulm.
The dam stands 18 feet tall and stretches 300 feet across, and has a maximum storage capacity of 71 acre-feet. Completed in 1930, 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 | Cascade |
| Nearest City | Ulm |
| River/Stream | Tr-bird Creek |
| Coordinates | 47.26040, -111.57280 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 300 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 71 acre-ft |
| Max Storage | 71 acre-ft |
| Normal Storage | 9 acre-ft |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Gollaher Ranch Co. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03298 |
| Federal ID | MT03298 |
| More Info | State Dam Safety Program |