Forty Niner Lake Dam is a dam located in Greenville County, South Carolina, built in 1960. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 43 ft43 ft tall, taller than 89% 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 Forty Niner Lake Dam
The primary purpose of Forty Niner Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Kirk P and Diane M Dillon (private). It impounds the Tr-meadow Fork.
The dam stands 43 feet tall, creates a reservoir covering 5 acres, and has a maximum storage capacity of 83 acre-feet. Completed in 1960, the structure is well into its service life at over 50 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. 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 05/11/2017.
At 43 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | South Carolina |
| County | Greenville |
| River/Stream | Tr-meadow Fork |
| Coordinates | 35.07520, -82.40520 |
Physical Characteristics
| NID Height | 43 ft |
| Dam Height | 43 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 83 acre-ft |
| Max Storage | 83 acre-ft |
| Normal Storage | 78 acre-ft |
| Surface Area | 5 acres |
Ownership & Safety
| Purpose | Recreation |
| Owner | Kirk P and Diane M Dillon |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/11/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SCD02852 |
| Federal ID | SCD02852 |
| More Info | State Dam Safety Program |