Bernard Armstrong is an earth dam located in Haakon County, South Dakota, built in 1969. It carries a Significant hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 201 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 Bernard Armstrong
The primary purpose of Bernard Armstrong is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Daly-z Family Farms (private). It impounds the Brunt Creek-tr near Midland.
The dam stands 26 feet tall and stretches 201 feet across, and has a maximum storage capacity of 832 acre-feet. Completed in 1969, 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.
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Location
| State | South Dakota |
| County | Haakon |
| Nearest City | Midland |
| River/Stream | Brunt Creek-tr |
| Coordinates | 44.23678, -101.26701 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 201 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 832 acre-ft |
| Max Storage | 832 acre-ft |
| Normal Storage | 440 acre-ft |
| Max Discharge | 2,106 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Daly-z Family Farms |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01786 |
| Federal ID | SD01786 |
| More Info | State Dam Safety Program |