Twitchell #1
Twitchell #1 is an earth dam located in Garfield County, Montana, built in 1960. It carries a Low hazard potential classification.
About Twitchell #1
The primary purpose of Twitchell #1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by W Twitchell (private). It impounds the Tr-ft Peck Reservoir near No Town.
The dam stands 24 feet tall and stretches 150 feet across, and has a maximum storage capacity of 63 acre-feet. Completed in 1960, 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 | Garfield |
| Nearest City | No Town |
| River/Stream | Tr-ft Peck Reservoir |
| Coordinates | 47.58490, -106.38510 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 150 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 63 acre-ft |
| Max Storage | 63 acre-ft |
| Normal Storage | 36 acre-ft |
Ownership & Safety
| Purpose | Irrigation |
| Owner | W TWITCHELL |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00474 |
| Federal ID | MT00474 |
| More Info | State Dam Safety Program |