Mcnairs Millpond Dam
Mcnairs Millpond Dam is a dam located in Marlboro County, South Carolina, built in 1875. It carries a Significant hazard potential classification and has a poor condition assessment.
About Mcnairs Millpond Dam
Mcnairs Millpond Dam is a dam in Marlboro, South Carolina. The dam is owned by Betty Lee Carraway;pine Grove Methodist Church Of Mccoll (private). It impounds the Beaverdam Creek.
The dam stands 17 feet tall, creates a reservoir covering 75 acres, and has a maximum storage capacity of 670 acre-feet. Completed in 1875, the structure is one of the older dams in the region, with over a century and a half 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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 10/16/2024.
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Location
| State | South Carolina |
| County | Marlboro |
| River/Stream | Beaverdam Creek |
| Coordinates | 34.69610, -79.58700 |
Physical Characteristics
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Year Completed | 1875 (151 years old) |
Storage & Hydraulics
| NID Storage | 670 acre-ft |
| Max Storage | 670 acre-ft |
| Normal Storage | 258 acre-ft |
| Surface Area | 75 acres |
Ownership & Safety
| Purpose | Other |
| Owner | BETTY LEE CARRAWAY;PINE GROVE METHODIST CHURCH OF MCCOLL |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 10/16/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | SCD03446 |
| Federal ID | SCD03446 |
| More Info | State Dam Safety Program |