Upper Deerfield Lake Dam
Upper Deerfield Lake Dam is a dam located in Sumter County, South Carolina, built in 1960. It carries a Significant hazard potential classification and has a fair condition assessment.
About Upper Deerfield Lake Dam
The primary purpose of Upper Deerfield Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Upper Deerfield Lake Assoc Llc (private). It impounds the Tr-green Swamp.
The dam stands 11 feet tall, creates a reservoir covering 8 acres, and has a maximum storage capacity of 68 acre-feet. Completed in 1960, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 03/04/2022.
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Location
| State | South Carolina |
| County | Sumter |
| River/Stream | Tr-green Swamp |
| Coordinates | 33.93230, -80.39810 |
Physical Characteristics
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 68 acre-ft |
| Max Storage | 68 acre-ft |
| Normal Storage | 46 acre-ft |
| Surface Area | 8 acres |
Ownership & Safety
| Purpose | Recreation |
| Owner | UPPER DEERFIELD LAKE ASSOC LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 03/04/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | SCD01991 |
| Federal ID | SCD01991 |
| More Info | State Dam Safety Program |