Hook #70 is an earth dam located in Rosebud County, Montana, built in 1953. It carries a Low hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 525 ft long, taller than 59% of U.S. dams with a recorded height. 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 Hook #70
The primary purpose of Hook #70 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Hook Ranch (private). It impounds the Tr-hay Creek near Kinsey.
The dam stands 27 feet tall and stretches 525 feet across, and has a maximum storage capacity of 110 acre-feet. Completed in 1953, the structure is well into its service life at over 50 years 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 | Rosebud |
| Nearest City | Kinsey |
| River/Stream | Tr-hay Creek |
| Coordinates | 46.66390, -106.22170 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 525 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 110 acre-ft |
| Max Storage | 110 acre-ft |
| Normal Storage | 58 acre-ft |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Hook Ranch |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01756 |
| Federal ID | MT01756 |
| More Info | State Dam Safety Program |