Rattlesnake Dam is an other dam located in Dawson County, Montana, built in 1962. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 22 ft22 ft tall and 498 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 Rattlesnake Dam
The primary purpose of Rattlesnake Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Doi BLM (federal).
The dam stands 22 feet tall and stretches 498 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 89 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1962, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/25/2019.
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Location
| State | Montana |
| County | Dawson |
| Nearest City | Glendive Mt |
| Coordinates | 46.88580, -104.64790 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 22 ft |
| Dam Length | 498 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 89 acre-ft |
| Max Storage | 89 acre-ft |
| Normal Storage | 89 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 70 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/25/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03992 |
| Federal ID | MT03992 |
| More Info | State Dam Safety Program |