Gregg Dam No. 2 is an earth dam located in Todd County, South Dakota, built in 2014. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 600 ft long. 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 Gregg Dam No. 2
The primary purpose of Gregg Dam No. 2 is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Jeffery Gregg (private). It impounds the Tr-white Horse Creek.
The dam stands 15 feet tall and stretches 600 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 208 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 2014, the structure is relatively new.
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 | Todd |
| River/Stream | Tr-white Horse Creek |
| Coordinates | 43.38235, -100.26756 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 600 ft |
| Year Completed | 2014 (12 years old) |
Storage & Hydraulics
| NID Storage | 208 acre-ft |
| Max Storage | 208 acre-ft |
| Normal Storage | 60 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 953 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Jeffery Gregg |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02653 |
| Federal ID | SD02653 |
| More Info | State Dam Safety Program |