Mill Watershed Structure Lt-14b-2 Dam Reservoir Report
Last Updated: December 5, 2025
The Mill Watershed Structure Lt-14b-2 Dam, located in Union, Mississippi, is a crucial infrastructure owned by the local government and regulated by the Mississippi Department of Environmental Quality.
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Summary
Built in 1970 by the USDA NRCS, this earth dam stands at a height of 27 feet and serves primarily for flood risk reduction along the Mill Creek. With a storage capacity of 336 acre-feet, the dam's low hazard potential and moderate risk assessment make it a key component in managing water resources in the area.
The dam features an uncontrolled spillway and outlet gates, with a design that includes a buttress core and soil foundation. While the structure has not been rated for its current condition, it is subject to state regulation, inspection, and enforcement to ensure its continued functionality. The risk management measures for the dam are moderate, indicating a need for ongoing monitoring and maintenance to uphold its flood risk reduction capabilities. Additionally, the dam's location in the Vicksburg District underscores its importance in protecting the surrounding community from potential water-related disasters.
Water resource and climate enthusiasts would appreciate the significance of the Mill Watershed Structure Lt-14b-2 Dam in safeguarding the Union, Mississippi area from flooding. This earth dam, designed by the USDA NRCS, plays a vital role in managing water levels along the Mill Creek and reducing the risk of inundation for local residents. With its state-regulated status and moderate risk assessment, the dam serves as a critical piece of infrastructure that requires ongoing attention and maintenance to ensure its effectiveness in flood risk reduction. Its presence highlights the importance of sustainable water management practices in mitigating the impacts of climate change on vulnerable communities.
Year Completed |
1970 |
Dam Height |
27 |
River Or Stream |
MILL CREEK |
Primary Dam Type |
Earth |
Drainage Area |
0.82 |
Nid Storage |
336 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Tallahatchie River At Etta
|
156cfs |
Yocona River Nr Oxford
|
96cfs |
Wolf River At Lagrange
|
227cfs |
Hatchie River Near Walnut
|
153cfs |
Coldwater River Nr Olive Branch
|
104cfs |
Wolf River At Rossville
|
497cfs |
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.
Mill Watershed Structure Lt-14b-2 Dam