Lake Henry Grady Dam Reservoir Report
Nearby: Tyre Lake Dam Vernon Nolan Dam
Last Updated: December 5, 2025
Lake Henry Grady Dam, located in Appling, Georgia, was completed in 1997 and serves primarily for irrigation purposes.
°F
°F
mph
Wind
%
Humidity
Summary
This private-owned Earth dam stands at 20 feet in height and has a maximum storage capacity of 1250 acre-feet. With a normal storage capacity of 640 acre-feet, the dam covers an impressive surface area of 80 acres.
Despite being unlisted for drainage area, the dam boasts a low hazard potential and a moderate risk assessment rating. The last inspection in 2016 deemed the dam in satisfactory condition, with a 5-year inspection frequency. With uncontrolled spillways and outlet gates, the dam presents a unique engineering feat within the Jacksonville District.
Lake Henry Grady Dam offers a captivating glimpse into water resource management in the region, catering to the agricultural needs of the area. Its strategic location and design underscore the importance of sustainable water utilization and infrastructure development in mitigating climate change impacts on water resources.
Year Completed |
1997 |
Dam Height |
20 |
Primary Dam Type |
Earth |
Surface Area |
80 |
Nid Storage |
1250 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Satilla River Near Offerman
|
2cfs |
Altamaha River At Doctortown
|
3110cfs |
Satilla River Near Waycross
|
45cfs |
Satilla River At Atkinson
|
137cfs |
Altamaha River Near Baxley
|
3480cfs |
Ohoopee River Near Reidsville
|
105cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Lake Henry Grady Dam