Thomas Lake Dam Reservoir Report
Nearby: Thomas Lake Sid Imes Dam
Last Updated: December 6, 2025
Thomas Lake Dam, located in Pickenville, Mississippi, is a privately owned structure with a primary purpose of recreation.
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Summary
Built in 1965 by the USDA NRCS, this earth dam stands at a height of 12 feet and has a storage capacity of 150 acre-feet. Situated on the TR-Magowah Creek, it is regulated by the Mississippi Department of Environmental Quality and is subject to state permitting, inspection, and enforcement.
Although the dam's hazard potential is currently labeled as undetermined and its condition is not rated, it falls under a moderate risk category according to a risk assessment. The dam features an uncontrolled spillway and outlet gates, with no associated locks. While the structure has not been modified in recent years, its emergency action plan status and inundation maps are not specified. Despite these uncertainties, Thomas Lake Dam remains an intriguing site for water resource and climate enthusiasts to explore and study in the state of Mississippi.
Year Completed |
1965 |
Dam Height |
12 |
River Or Stream |
TR- MAGOWAH CREEK |
Primary Dam Type |
Earth |
Nid Storage |
150 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Undetermined |
Foundations |
Soil |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Catalpa Creek At Mayhew
|
2940cfs |
Tombigbee River At Stennis Lock And Dam
|
2610cfs |
Luxapallila Creek Nr Columbus
|
525cfs |
Tombigbee River At Bevill L&D Nr Pickensville
|
1550cfs |
Noxubee River At Macon
|
147cfs |
Buttahatchee River Nr Aberdeen
|
632cfs |
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.
Thomas Lake Dam