Floodly is an earth dam located in Garfield County, Montana, built in 1940. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 150 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 Floodly
The primary purpose of Floodly is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Haglof Ranch (private). It impounds the Tr-uall Creek.
The dam stands 12 feet tall and stretches 150 feet across, and has a maximum storage capacity of 76 acre-feet. Completed in 1940, 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 | Garfield |
| Nearest City | None |
| River/Stream | Tr-uall Creek |
| Coordinates | 46.86470, -106.23920 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 150 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 76 acre-ft |
| Max Storage | 76 acre-ft |
| Normal Storage | 22 acre-ft |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Haglof Ranch |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02665 |
| Federal ID | MT02665 |
| More Info | State Dam Safety Program |