Harris Lake Dam Reservoir Report
Last Updated: December 13, 2025
Harris Lake Dam, located in Tattnall, Georgia, is a privately owned earth dam primarily used for recreation purposes.
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Summary
The dam stands at 17 feet tall and spans 630 feet in length, with a storage capacity of 90 acre-feet. Situated on an unknown river or stream, the dam is classified as having a low hazard potential and a moderate risk assessment. Despite not being regulated by the state, the dam has not been rated for its condition and does not have an established emergency action plan.
While Harris Lake Dam serves as a recreational facility, its construction and maintenance do not fall under state jurisdiction or regulation. With an uncontrolled spillway and outlet gates, the dam's operations remain relatively simple. Despite its lack of state oversight, the dam's risk level is considered moderate, indicating the need for ongoing monitoring and potential risk management measures in the future. For water resource and climate enthusiasts, Harris Lake Dam is a notable structure that offers insight into the various types of dams and their associated risks.
Dam Length |
630 |
Dam Height |
17 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
138 |
Nid Storage |
90 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Ohoopee River Near Reidsville
|
209cfs |
Canoochee River Near Claxton
|
81cfs |
Altamaha River Near Baxley
|
4640cfs |
Oconee River Near Mount Vernon
|
1340cfs |
Ogeechee River At Rocky Ford Rd
|
881cfs |
Black Creek Near Blitchton
|
38cfs |
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.
Harris Lake Dam