Peterson Lake
Peterson Lake is an earth dam located in Missoula County, Montana, built in 1920. It carries a Low hazard potential classification.
About Peterson Lake
The primary purpose of Peterson Lake is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by I E Peterson (private). It impounds the Tr-rattlesnake Creek near Missoula.
The dam stands 12 feet tall and stretches 150 feet across, and has a maximum storage capacity of 170 acre-feet. Completed in 1920, the structure is over a century 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 | Missoula |
| Nearest City | Missoula |
| River/Stream | Tr-rattlesnake Creek |
| Coordinates | 46.99150, -113.88700 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 150 ft |
| Year Completed | 1920 (106 years old) |
Storage & Hydraulics
| NID Storage | 170 acre-ft |
| Max Storage | 170 acre-ft |
| Normal Storage | 140 acre-ft |
Ownership & Safety
| Purpose | Irrigation |
| Owner | I E PETERSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01466 |
| Federal ID | MT01466 |
| More Info | State Dam Safety Program |