Johnston Lake Dam
Johnston Lake Dam is an earth dam located in Mecklenburg County, North Carolina, built in 1966. It carries a Low hazard potential classification and has a fair condition assessment.
About Johnston Lake Dam
The primary purpose of Johnston Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Hawthorne At Whitehall Apartments, Llc (private). It impounds the Coffey Creek near Pineville.
The dam stands 20 feet tall and stretches 375 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 82 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1966, 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 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 12/03/2024.
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Location
| State | North Carolina |
| County | Mecklenburg |
| Nearest City | Pineville |
| River/Stream | Coffey Creek |
| Coordinates | 35.14880, -80.93460 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Length | 375 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 82 acre-ft |
| Max Storage | 82 acre-ft |
| Normal Storage | 68 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 20 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Hawthorne at Whitehall Apartments, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 12/03/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NC00230 |
| Federal ID | NC00230 |
| More Info | State Dam Safety Program |