Johnson Lake Dam is an earth dam located in Henry County, Georgia, built in 1954. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 580 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 Lassiter Properties, Inc. (private). It impounds the Unknown near Steeles Mill.
The dam stands 15 feet tall and stretches 580 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 112 acre-feet, and collects water from a drainage area of 340 square miles. Completed in 1954, 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. The most recent inspection on record was 03/01/2017.
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Location
| State | Georgia |
| County | Henry |
| Nearest City | Steeles Mill |
| River/Stream | Unknown |
| Coordinates | 33.36722, -84.27361 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 580 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 112 acre-ft |
| Max Storage | 112 acre-ft |
| Normal Storage | 63 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 340 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lassiter Properties, Inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 03/01/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | GA01558 |
| Federal ID | GA01558 |
| More Info | State Dam Safety Program |