Cinnamon #2 is an earth dam located in Wheatland County, Montana, built in 1974. It carries a Low hazard potential classification.
Dam profile
NID height · 19 ft19 ft tall and 500 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 Cinnamon #2
The primary purpose of Cinnamon #2 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by John Cooney (private). It impounds the Tr-mud Creek near Ryegate.
The dam stands 19 feet tall and stretches 500 feet across, has a maximum storage capacity of 88 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1974, 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 | Wheatland |
| Nearest City | Ryegate |
| River/Stream | Tr-mud Creek |
| Coordinates | 46.31510, -109.68470 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 500 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 88 acre-ft |
| Max Storage | 88 acre-ft |
| Normal Storage | 53 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 120 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | John Cooney |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02414 |
| Federal ID | MT02414 |
| More Info | State Dam Safety Program |