Mont Mars Grade Control Structure Dam Reservoir Report
Nearby: Ms04304 Lake Dam Ms04298 Lake Dam
Last Updated: December 6, 2025
The Mont Mars Grade Control Structure Dam in Mississippi is a private-owned earth dam primarily used for recreation on the UNT of Okatibbee River.
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Summary
Completed in 1993 by the NRCS, this 33-foot high dam spans 680 feet and has a storage capacity of 48 acre-feet. With a low hazard potential and moderate risk assessment rating, the dam is not currently rated for condition assessment but is regulated by the Mississippi Department of Environmental Quality.
Situated in Neshoba County, Mississippi, the Mont Mars Dam serves as a vital recreational resource for the community, offering a surface area of 2.5 acres for various water activities. Despite being uncontrolled, the dam has a maximum discharge capacity of 420 cfs and is inspected and regulated by state authorities. With its buttress core design, the dam provides a safe and enjoyable environment for outdoor enthusiasts while also contributing to the overall water management system in the region.
As a key feature in the Vicksburg District managed by the US Army Corps of Engineers, the Mont Mars Grade Control Structure Dam plays a crucial role in flood control and water resource management. With its strategic location and low risk profile, the dam represents a balance between recreation and environmental stewardship, showcasing the importance of sustainable water infrastructure in the face of changing climate patterns.
Year Completed |
1993 |
Dam Length |
680 |
Dam Height |
33 |
River Or Stream |
UNT OF OKATIBBEE |
Primary Dam Type |
Earth |
Surface Area |
2.5 |
Drainage Area |
0.23 |
Nid Storage |
48 |
Hazard Potential |
Low |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pearl River At Burnside
|
1070cfs |
Pearl River At Edinburg
|
202cfs |
Sowashee Creek At Meridian
|
16cfs |
Chunky River Nr Chunky
|
301cfs |
Okatibbee Creek At Arundel
|
89cfs |
Tuscolameta Creek At Walnut Grove
|
401cfs |
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.
Mont Mars Grade Control Structure Dam