Mathews Bros. Number 1 is an earth dam located in Stanley County, South Dakota, built in 1966. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 500 ft long, taller than 62% 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 Mathews Bros. Number 1
The primary purpose of Mathews Bros. Number 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 Mathews Bros. (private). It impounds the Trib. Bad River near Fort Pierre.
The dam stands 28 feet tall and stretches 500 feet across, and has a maximum storage capacity of 57 acre-feet. Completed in 1966, 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 | South Dakota |
| County | Stanley |
| Nearest City | Fort Pierre |
| River/Stream | Trib. Bad River |
| Coordinates | 44.20333, -100.58332 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 500 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 57 acre-ft |
| Max Storage | 57 acre-ft |
| Normal Storage | 16 acre-ft |
| Max Discharge | 840 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Mathews Bros. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01557 |
| Federal ID | SD01557 |
| More Info | State Dam Safety Program |