Barclay is an earth dam located in Garfield County, Montana, built in 1955. It carries a Low hazard potential classification.
Dam profile
NID height · 24 ft24 ft tall and 250 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 Barclay
The primary purpose of Barclay is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Alex S Barclay (private). It impounds the South Fork Flat Creek near No Town.
The dam stands 24 feet tall and stretches 250 feet across, has a maximum storage capacity of 125 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1955, 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 | South Fork Flat Creek |
| Coordinates | 47.58160, -106.52540 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 250 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 125 acre-ft |
| Max Storage | 125 acre-ft |
| Normal Storage | 73 acre-ft |
| Drainage Area | 3 sq mi |
| Max Discharge | 500 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Alex S Barclay |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00475 |
| Federal ID | MT00475 |
| More Info | State Dam Safety Program |