Grays Creek Watershed Structure G-6-I Dam Reservoir Report
Last Updated: December 6, 2025
The Grays Creek Watershed Structure G-6-I Dam, also known as G-6 Dam 1, is a local government-owned earth dam located in Michigan City, Mississippi.
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Summary
Built in 1966 by the USDA NRCS, this dam serves the primary purpose of flood risk reduction along the TR- Grays Creek. With a height of 24 feet and a storage capacity of 87 acre-feet, the dam is designed as a buttress-type structure with a soil foundation.
Managed by the Mississippi Department of Environmental Quality, the Grays Creek Watershed Structure G-6-I Dam is regulated, permitted, inspected, and enforced to ensure its safety and functionality. The dam has a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment. While it has not been modified in recent years, the dam's risk assessment is moderate, indicating the need for ongoing monitoring and risk management measures.
Climate and water resource enthusiasts interested in the Grays Creek Watershed Structure G-6-I Dam will find it to be a crucial infrastructure for flood risk reduction in the region. With its controlled spillways and uncontrolled outlet gates, this dam plays a vital role in managing water flow and protecting the surrounding area from potential flooding events. As a key piece of the local government's water resource management strategy, the dam's design, construction, and regulatory oversight highlight the importance of maintaining and monitoring such critical infrastructure for long-term resilience and sustainability in the face of changing climate conditions.
Year Completed |
1966 |
Dam Height |
24 |
River Or Stream |
TR- GRAYS CREEK |
Primary Dam Type |
Earth |
Drainage Area |
0.41 |
Nid Storage |
87 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
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 |
Little Tallahatchie River At Etta
|
220cfs |
Hatchie River At Bolivar
|
933cfs |
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-I Dam