Addison Dam Reservoir Report
Last Updated: December 6, 2025
Addison Dam, located in Hancock, Mississippi, is a privately owned earth dam primarily designed for recreation purposes.
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Summary
Completed in 1999, the dam stands at a height of 22.5 feet and has a length of 1192 feet, creating a reservoir with a storage capacity of 586 acre-feet. The dam is regulated by the Mississippi Department of Environmental Quality and is subject to regular inspection, enforcement, and permitting to ensure its safety and compliance with state regulations.
With a low hazard potential and a moderate risk assessment rating, Addison Dam serves as a vital recreational resource for the surrounding community. The dam's uncontrolled spillway ensures water can safely flow out during periods of excess discharge, while its condition assessment remains ungraded. While the dam has not been assigned a Dam Safety Action Classification (DSAC) and lacks specific risk management measures, its overall risk assessment remains moderate.
Despite its simple design and limited associated structures, Addison Dam continues to provide valuable recreational opportunities while maintaining a moderate level of risk management. Enthusiasts of water resources and climate will appreciate the dam's role in providing a controlled water source for recreational activities, all while adhering to state regulations and safety standards set by the Mississippi Department of Environmental Quality.
Year Completed |
1999 |
Dam Length |
1192 |
Dam Height |
22.5 |
Primary Dam Type |
Earth |
Surface Area |
35 |
Drainage Area |
0.44 |
Nid Storage |
586 |
Hazard Potential |
Low |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Wolf River Nr Landon
|
1010cfs |
East Hobolochitto Creek Nr Caesar
|
380cfs |
Biloxi River At Wortham
|
467cfs |
West Hobolochitto Creek Nr Mcneill
|
456cfs |
Pearl River Near Bogalusa
|
4900cfs |
Bogue Chitto River Near Bush
|
2090cfs |
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.
Addison Dam