Johnston Irrigation Lake Dam is an earth dam located in Upson County, Georgia, built in 1979. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 555 ft long, taller than 50% 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 Johnston Irrigation Lake Dam
The primary purpose of Johnston Irrigation Lake Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Johnston, William Jr. (private). It impounds the Little Swift Creek.
The dam stands 25 feet tall and stretches 555 feet across, creates a reservoir covering 22 acres, has a maximum storage capacity of 354 acre-feet, and collects water from a drainage area of 800 square miles. Completed in 1979, the structure is 47 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 06/01/2018.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Georgia |
| County | Upson |
| River/Stream | Little Swift Creek |
| Coordinates | 32.92500, -84.24444 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 555 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 354 acre-ft |
| Max Storage | 354 acre-ft |
| Normal Storage | 154 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 800 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Johnston, William Jr. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/01/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | GA05078 |
| Federal ID | GA05078 |
| More Info | State Dam Safety Program |