Erickson #4
Erickson #4 is an earth dam located in Rosebud County, Montana, built in 1931. It carries a Low hazard potential classification.
About Erickson #4
The primary purpose of Erickson #4 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 Grant Erickson (private). It impounds the Tr-big Porcupine Creek near Forsyth.
The dam stands 18 feet tall and stretches 225 feet across, has a maximum storage capacity of 108 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1931, the structure is well-established, with more than 75 years of service.
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-big Porcupine Creek |
| Coordinates | 46.39450, -106.89570 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 225 ft |
| Year Completed | 1931 (95 years old) |
Storage & Hydraulics
| NID Storage | 108 acre-ft |
| Max Storage | 108 acre-ft |
| Normal Storage | 51 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 600 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | GRANT ERICKSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01920 |
| Federal ID | MT01920 |
| More Info | State Dam Safety Program |