Harstad #1 is an earth dam located in Rosebud County, Montana, built in 1968. It carries a Low hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 360 ft long, taller than 55% of U.S. dams with a recorded height. 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 Harstad #1
The primary purpose of Harstad #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 Harstad Inc (private). It impounds the Tr-living Ash Creek near Forsyth.
The dam stands 26 feet tall and stretches 360 feet across, has a maximum storage capacity of 103 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1968, 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 | Rosebud |
| Nearest City | Forsyth |
| River/Stream | Tr-living Ash Creek |
| Coordinates | 46.45400, -106.86960 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 360 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 103 acre-ft |
| Max Storage | 103 acre-ft |
| Normal Storage | 67 acre-ft |
| Drainage Area | 3 sq mi |
| Max Discharge | 1,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Harstad Inc |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00541 |
| Federal ID | MT00541 |
| More Info | State Dam Safety Program |