Dies Irae
Dies Irae is an earth dam located in Chouteau County, Montana, built in 1961. It carries a Low hazard potential classification.
About Dies Irae
The primary purpose of Dies Irae is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Walter M Olson (private). It impounds the Little Sand Creek near Lohman.
The dam stands 25 feet tall and stretches 800 feet across, has a maximum storage capacity of 93 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1961, 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 | Chouteau |
| Nearest City | Lohman |
| River/Stream | Little Sand Creek |
| Coordinates | 48.03470, -109.55570 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 800 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 93 acre-ft |
| Max Storage | 93 acre-ft |
| Normal Storage | 55 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 180 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | WALTER M OLSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03536 |
| Federal ID | MT03536 |
| More Info | State Dam Safety Program |