Mendenhall Sewage Lagoon Dam Reservoir Report
Nearby: Kent Jones Dam Ms04230 Lake Dam
Last Updated: December 29, 2025
The Mendenhall Sewage Lagoon Dam, located in Simpson County, Mississippi, is a crucial infrastructure owned by the local government and regulated by the Mississippi Department of Environmental Quality.
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Summary
This Earth-type dam serves a primary purpose that goes beyond typical water resource management, as it is used for sewage treatment and storage. With a height of 10 feet and a storage capacity of 104 acre-feet, this dam plays a significant role in protecting the Sellers Creek watershed and surrounding areas from potential environmental hazards associated with sewage disposal.
Even though the dam has a low hazard potential, its risk assessment is rated as moderate (3), indicating the importance of ongoing monitoring and maintenance to ensure its structural integrity. The last inspection of the Mendenhall Sewage Lagoon Dam dates back to May 1998, highlighting the need for updated assessments and emergency action plans to mitigate any potential risks. While the dam is currently in a "Not Rated" condition, it is essential for local authorities to prioritize its maintenance and implement necessary risk management measures to safeguard the community and the environment in the face of changing climate conditions and increasing water resource challenges.
Dam Height |
10 |
River Or Stream |
SELLERS CREEK |
Primary Dam Type |
Earth |
Nid Storage |
104 |
Hazard Potential |
Low |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Strong River At D`Lo
|
69cfs |
Pearl River Nr Rockport
|
702cfs |
Pearl River At Jackson
|
341cfs |
Lynch Creek At Jackson
|
1100cfs |
Pearl River Nr Monticello
|
866cfs |
Hanging Moss Creek Nr Jackson
|
356cfs |
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.
Mendenhall Sewage Lagoon Dam