Holzhey
Holzhey is an earth dam located in Sweet Grass County, Montana, built in 1956. It carries a Low hazard potential classification.
About Holzhey
The primary purpose of Holzhey is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by R Holzhey (private). It impounds the First Creek near Saco.
The dam stands 21 feet tall and stretches 2,500 feet across, creates a reservoir covering 167 acres, has a maximum storage capacity of 2,578 acre-feet, and collects water from a drainage area of 39 square miles. Completed in 1956, 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 | Sweet Grass |
| Nearest City | Saco |
| River/Stream | First Creek |
| Coordinates | 45.87870, -109.74470 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 2,500 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 2,578 acre-ft |
| Max Storage | 2,578 acre-ft |
| Normal Storage | 1,400 acre-ft |
| Surface Area | 167 acres |
| Drainage Area | 39 sq mi |
| Max Discharge | 2,600 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | R HOLZHEY |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01286 |
| Federal ID | MT01286 |
| More Info | State Dam Safety Program |