Harrison Pond Dam Reservoir Report
Last Updated: December 13, 2025
Harrison Pond Dam, located in Johnson, Georgia, is an earth dam with a height of 11 feet and a hydraulic height of 9 feet.
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Summary
The dam, constructed with a buttress core type, spans 360 feet in length and has a storage capacity of 112 acre-feet. The dam's purpose and primary dam type are not listed, but its low hazard potential and moderate risk assessment indicate a relatively stable structure with minimal risk of failure.
Despite being unlisted by state agencies for ownership and regulation, Harrison Pond Dam is subject to state inspection and enforcement. The dam, with a surface area of 15 acres and draining a watershed of 390 acres, features an uncontrolled spillway and outlet gates. The last inspection in 2014 rated the dam's condition as "Not Rated," suggesting a need for updated assessments to ensure its continued safety and functionality.
Water resource and climate enthusiasts may be interested in Harrison Pond Dam for its unique design and moderate risk profile. The dam's location in Georgia, its low hazard potential, and the lack of recent condition assessments present an opportunity for further exploration and study. As a vital component of the local water infrastructure, understanding the dam's structural integrity and risk management measures is crucial for ensuring the safety of surrounding communities and the preservation of water resources in the area.
Dam Length |
360 |
Dam Height |
11 |
Primary Dam Type |
Earth |
Surface Area |
15 |
Hydraulic Height |
9 |
Drainage Area |
390 |
Nid Storage |
112 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
11 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Ogeechee River At Midville
|
628cfs |
Williamson Swamp Creek At Davisboro
|
52cfs |
Oconee River Near Oconee
|
864cfs |
Oconee River At Dublin
|
1030cfs |
Buffalo Creek At Ga 272
|
49cfs |
Oconee River At Avant Mine
|
606cfs |
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.
Harrison Pond Dam