Grays Creek Watershed Structure G-6-J Reservoir Report
Last Updated: December 6, 2025
Grays Creek Watershed Structure G-6-J, also known as the G-6 Dam, is a private-owned earth dam located in Benton, Mississippi.
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Summary
Constructed in 1966 by the USDA NRCS, this dam serves the primary purpose of flood risk reduction along the Grays Creek tributary. With a height of 27 feet and a length of 363 feet, the G-6 Dam has a normal storage capacity of 17.2 acre-feet and a maximum discharge of 185 cubic feet per second.
Managed by the Mississippi Department of Environmental Quality, the G-6 Dam is classified as a low hazard potential structure and is currently rated as "Not Rated" in terms of condition assessment. Although it lacks certain emergency preparedness measures such as an Emergency Action Plan (EAP), the dam has been identified as having a moderate risk level. While the dam structure itself is not under the jurisdiction of the US Army Corps of Engineers, it plays a crucial role in mitigating flooding in the area and protecting the surrounding community from potential water-related hazards.
Overall, Grays Creek Watershed Structure G-6-J stands as a vital component of the local water resource management system, providing essential flood protection for the residents of Michigan City. As climate change continues to impact precipitation patterns and water availability, the maintenance and monitoring of structures like the G-6 Dam are essential to ensure the safety and resilience of the community in the face of future water-related challenges.
Year Completed |
1966 |
Dam Length |
363 |
Dam Height |
27 |
River Or Stream |
UNT OF GRAYS CREEK |
Primary Dam Type |
Earth |
Surface Area |
3.2 |
Drainage Area |
0.21 |
Nid Storage |
37 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Wolf River At Lagrange
|
223cfs |
Wolf River At Rossville
|
508cfs |
Coldwater River Nr Olive Branch
|
112cfs |
Hatchie River Near Walnut
|
172cfs |
Hatchie River At Bolivar
|
933cfs |
Little Tallahatchie River At Etta
|
220cfs |
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.
Grays Creek Watershed Structure G-6-J