Dwyer
Dwyer is an earth dam located in Jerauld County, South Dakota, built in 1966. It carries a Low hazard potential classification.
About Dwyer
The primary purpose of Dwyer 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 Don Dwyer (private). It impounds the Tr James River.
The dam stands 33 feet tall and stretches 288 feet across, and has a maximum storage capacity of 80 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.
At 33 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | South Dakota |
| County | Jerauld |
| Nearest City | None |
| River/Stream | Tr James River |
| Coordinates | 44.11333, -98.60666 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 288 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 80 acre-ft |
| Max Storage | 80 acre-ft |
| Normal Storage | 55 acre-ft |
| Max Discharge | 100 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | DON DWYER |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00916 |
| Federal ID | SD00916 |
| More Info | State Dam Safety Program |