Johnson Lake Dam is an earth dam located in Washington County, Georgia, built in 1976. It carries a Low hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall and 360 ft long. 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 Johnson Lake Dam
The primary purpose of Johnson Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Johnson, Floyd (private). It impounds the Unknown near Harrison.
The dam stands 14 feet tall and stretches 360 feet across, creates a reservoir covering 13 acres, has a maximum storage capacity of 133 acre-feet, and collects water from a drainage area of 360 square miles. Completed in 1976, the structure is 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. The most recent inspection on record was 12/02/2002. That was over 23 years ago.
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Location
| State | Georgia |
| County | Washington |
| Nearest City | Harrison |
| River/Stream | Unknown |
| Coordinates | 32.85833, -82.75333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 360 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 133 acre-ft |
| Max Storage | 133 acre-ft |
| Normal Storage | 62 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 360 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Johnson, Floyd |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 12/02/2002 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | GA02561 |
| Federal ID | GA02561 |
| More Info | State Dam Safety Program |