John W Atwood Lake Dam Reservoir Report
Last Updated: December 5, 2025
John W Atwood Lake Dam in Lamar, Mississippi, is a privately owned structure that serves as a vital water resource for the region.
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Summary
This earth dam, with a buttress core type, stands at a height of 13 feet and has a storage capacity of 98 acre-feet. While its primary purpose is for recreational activities, the dam is also regulated by the Mississippi Department of Environmental Quality, ensuring its safety and compliance with state regulations.
The dam's low hazard potential and moderate risk assessment make it a crucial component of the local water management system. With a spillway type of uncontrolled, the dam provides essential flood control measures to protect the surrounding areas. Despite not having a current condition assessment, the dam's risk management measures are continuously monitored to ensure the safety and security of the structure and its users.
For water resource and climate enthusiasts, John W Atwood Lake Dam is a fascinating example of how private ownership can play a significant role in water management and conservation efforts. With its strategic location and recreational benefits, this dam serves as a valuable asset in the region's overall water infrastructure, contributing to environmental sustainability and community well-being.
Dam Height |
13 |
Nid Storage |
98 |
Hazard Potential |
Low |
Nid Height |
13 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Black Creek Nr Brooklyn
|
641cfs |
Cypress Creek Nr Janice
|
235cfs |
Leaf River At Hattiesburg
|
1360cfs |
Leaf River Nr New Augusta
|
1590cfs |
Pearl River Near Bogalusa
|
3740cfs |
West Hobolochitto Creek Nr Mcneill
|
663cfs |
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.
John W Atwood Lake Dam