Hayes Stockwater Dam is an earth dam located in Buffalo County, South Dakota, built in 1949. It carries a Significant hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 255 ft long, taller than 68% 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 Hayes Stockwater Dam
The primary purpose of Hayes Stockwater 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 Bruce Knight (private). It impounds the Crow Creek-tr.
The dam stands 30 feet tall and stretches 255 feet across, and has a maximum storage capacity of 19 acre-feet. Completed in 1949, the structure is well-established, with more than 75 years of service.
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 | Buffalo |
| Nearest City | None |
| River/Stream | Crow Creek-tr |
| Coordinates | 44.17229, -99.03974 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 255 ft |
| Year Completed | 1949 (77 years old) |
Storage & Hydraulics
| NID Storage | 19 acre-ft |
| Max Storage | 19 acre-ft |
| Normal Storage | 10 acre-ft |
| Max Discharge | 230 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Bruce Knight |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01351 |
| Federal ID | SD01351 |
| More Info | State Dam Safety Program |