Perry Dam is an earth dam located in Mellette County, South Dakota, built in 1994. It carries a Low hazard potential classification.
Dam profile
NID height · 40 ft40 ft tall and 300 ft long, taller than 86% 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 Perry Dam
The primary purpose of Perry Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Harry Perry Jr. (private). It impounds the Trib. White River.
The dam stands 40 feet tall and stretches 300 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 100 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1994, the structure is 32 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 40 feet, this dam is taller than 86% of dams nationwide.
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Location
| State | South Dakota |
| County | Mellette |
| Nearest City | None |
| River/Stream | Trib. White River |
| Coordinates | 43.69666, -100.23832 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 300 ft |
| Year Completed | 1994 (32 years old) |
Storage & Hydraulics
| NID Storage | 100 acre-ft |
| Max Storage | 100 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,700 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Harry Perry Jr. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02389 |
| Federal ID | SD02389 |
| More Info | State Dam Safety Program |