Giacometto #1
Giacometto #1 is an earth dam located in Powder River County, Montana, built in 1953. It carries a Significant hazard potential classification.
About Giacometto #1
The primary purpose of Giacometto #1 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Giacometto Ranch Inc (private). It impounds the South Fork Wright Creek near Powderville.
The dam stands 38 feet tall and stretches 225 feet across, and has a maximum storage capacity of 183 acre-feet. Completed in 1953, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.
At 38 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Montana |
| County | Powder River |
| Nearest City | Powderville |
| River/Stream | South Fork Wright Creek |
| Coordinates | 45.10850, -105.24630 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 225 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 183 acre-ft |
| Max Storage | 183 acre-ft |
| Normal Storage | 120 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | GIACOMETTO RANCH INC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01810 |
| Federal ID | MT01810 |
| More Info | State Dam Safety Program |