Lake Erma Dam is an earth dam located in Henry County, Georgia, built in 1961. It carries a Low hazard potential classification.
Dam profile
NID height · 37 ft37 ft tall and 746 ft long, taller than 83% 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 Lake Erma Dam
The primary purpose of Lake Erma Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Crystal Lake Golf & Country Club Property Owner's Association (private). It impounds the Unknown.
The dam stands 37 feet tall and stretches 746 feet across, creates a reservoir covering 72 acres, has a maximum storage capacity of 801 acre-feet, and collects water from a drainage area of 590 square miles. Completed in 1961, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 02/01/2017.
At 37 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Georgia |
| County | Henry |
| River/Stream | Unknown |
| Coordinates | 33.45694, -84.26222 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Height | 37 ft |
| Dam Length | 746 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 801 acre-ft |
| Max Storage | 801 acre-ft |
| Normal Storage | 588 acre-ft |
| Surface Area | 72 acres |
| Drainage Area | 590 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Crystal Lake Golf & Country Club Property Owner's Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 02/01/2017 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | GA04532 |
| Federal ID | GA04532 |
| More Info | State Dam Safety Program |