Sunnyhill Lower Dam is a dam located in Kershaw County, South Carolina, built in 1969. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 6 ft6 ft tall. 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 Sunnyhill Lower Dam
The primary purpose of Sunnyhill Lower Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by South Lake Inc (private). It impounds the Tr-wateree River.
The dam stands 6 feet tall, creates a reservoir covering 11 acres, and has a maximum storage capacity of 51 acre-feet. Completed in 1969, the structure is well into its service life at over 50 years old.
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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 11/10/2021.
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Location
| State | South Carolina |
| County | Kershaw |
| River/Stream | Tr-wateree River |
| Coordinates | 34.28800, -80.62660 |
Physical Characteristics
| NID Height | 6 ft |
| Dam Height | 6 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 51 acre-ft |
| Max Storage | 51 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 11 acres |
Ownership & Safety
| Purpose | Recreation |
| Owner | South Lake Inc |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/10/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | SCD02526 |
| Federal ID | SCD02526 |
| More Info | State Dam Safety Program |