Una S Johnson Dam
Una S Johnson Dam is a dam located in Cherokee County, South Carolina, built in 1958. It carries a Low hazard potential classification and has a poor condition assessment.
About Una S Johnson Dam
The primary purpose of Una S Johnson Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Johnson Hunter Llc (private). It impounds the Tr-broad River.
The dam stands 47 feet tall, creates a reservoir covering 19 acres, and has a maximum storage capacity of 331 acre-feet. Completed in 1958, 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 09/05/2017.
At 47 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | South Carolina |
| County | Cherokee |
| River/Stream | Tr-broad River |
| Coordinates | 34.88360, -81.48050 |
Physical Characteristics
| NID Height | 47 ft |
| Dam Height | 47 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 331 acre-ft |
| Max Storage | 331 acre-ft |
| Normal Storage | 147 acre-ft |
| Surface Area | 19 acres |
Ownership & Safety
| Purpose | Recreation |
| Owner | JOHNSON HUNTER LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 09/05/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SCD03423 |
| Federal ID | SCD03423 |
| More Info | State Dam Safety Program |