Armstrong Irr. Dam
Armstrong Irr. Dam is an earth dam located in Haakon County, South Dakota, built in 1974. It carries a Low hazard potential classification.
About Armstrong Irr. Dam
The primary purpose of Armstrong Irr. Dam 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 Midland Farms Llc (private). It impounds the Plum Creek-tr.
The dam stands 21 feet tall and stretches 568 feet across, and has a maximum storage capacity of 125 acre-feet. Completed in 1974, 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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | South Dakota |
| County | Haakon |
| Nearest City | None |
| River/Stream | Plum Creek-tr |
| Coordinates | 44.36981, -101.30246 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 568 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 125 acre-ft |
| Max Storage | 125 acre-ft |
| Normal Storage | 65 acre-ft |
| Max Discharge | 1,028 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | MIDLAND FARMS LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02318 |
| Federal ID | SD02318 |
| More Info | State Dam Safety Program |