Jack Gregory Dam Reservoir Report
Nearby: Ms04702 Lake Dam Ms04697 Lake Dam
Last Updated: December 6, 2025
Jack Gregory Dam, located in Monroe, Mississippi, is a privately owned structure with a primary purpose of recreation.
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Summary
Completed in 1991, this earth dam stands at a height of 13 feet and spans 950 feet in length. It impounds the waters of the UNT of Matubby Creek, providing a storage capacity of 93 acre-feet with a maximum discharge of 174 cubic feet per second.
The dam's low hazard potential and moderate risk assessment reflect its relatively stable condition, though it is not currently rated. The Mississippi Department of Environmental Quality oversees the state-regulated dam, ensuring inspection, permitting, and enforcement measures are in place. Despite being uncontrolled, the spillway type of Jack Gregory Dam helps manage water flow during peak periods, minimizing potential risks to downstream areas.
For water resource and climate enthusiasts, Jack Gregory Dam offers a fascinating case study in earth dam construction and management for recreational purposes. Its location within the Memphis District of the USACE and the oversight of state regulatory agencies highlight the importance of effective monitoring and maintenance practices in ensuring the safety and sustainability of water infrastructure projects.
Year Completed |
1991 |
Dam Length |
950 |
Dam Height |
13 |
River Or Stream |
UNT OF MATUBBY CREEK |
Primary Dam Type |
Earth |
Surface Area |
13 |
Hydraulic Height |
11 |
Drainage Area |
0.27 |
Nid Storage |
93 |
Hazard Potential |
Low |
Nid Height |
13 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Town Creek Nr Nettleton
|
218cfs |
Tombigbee River Nr Amory
|
3330cfs |
Tombigbee River At Bigbee
|
355cfs |
Tombigbee River At Aberdeen Lock And Dam
|
121cfs |
Town Creek At Eason Boulevard At Tupelo
|
65cfs |
Tombigbee River Nr Fulton
|
182cfs |
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.
Jack Gregory Dam