Middle Oconee-Walnut Creek Ws Structure # 16 Reservoir Report
Last Updated: December 5, 2025
Middle Oconee-Walnut Creek WS Structure #16, located in Jackson, Georgia, is a vital earth dam designed by SCS in 1968 for the primary purpose of flood risk reduction along the Opossum Creek.
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Summary
With a dam height of 25 feet and a length of 890 feet, this structure provides a storage capacity of 361 acre-feet, serving a drainage area of 695 acres. Despite its low hazard potential and moderate risk assessment, the dam has not been rated for its condition, highlighting the need for regular inspections and maintenance.
Owned by the state of Georgia, this dam falls under state jurisdiction with inspection conducted every 5 years. The structure features uncontrolled spillways and outlet gates, with no listed modifications or emergency action plan in place. While the dam meets guidelines for emergency preparedness, there is room for improvement in risk management measures and the development of inundation maps to better assess potential impacts in case of a breach. Overall, Middle Oconee-Walnut Creek WS Structure #16 stands as a crucial asset in mitigating flood risks in the region, calling for continued monitoring and investment in its safety and resilience.
Year Completed |
1968 |
Dam Length |
890 |
Dam Height |
25 |
River Or Stream |
OPOSSUM CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Drainage Area |
695 |
Nid Storage |
361 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Middle Oconee-Walnut Creek Ws Structure # 16