Upper Tallahatchie Structure Lt-10-11 Dam Reservoir Report
Last Updated: December 6, 2025
The Upper Tallahatchie Structure Lt-10-11 Dam in Mississippi, designed by USDA NRCS in 1962, serves as a crucial flood risk reduction infrastructure along the Tallahatchie River and Cook Creek.
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Summary
This earth dam with a buttress core type stands at a height of 26 feet, providing a storage capacity of 207 acre-feet. Despite being uncontrolled, the dam's spillway ensures efficient water management during high discharge events.
Managed by the local government and regulated by the Mississippi Department of Environmental Quality, this dam has a low hazard potential and a moderate risk assessment rating. While currently not rated for its condition, the dam is inspected, permitted, and enforced by state agencies to ensure its safety and functionality. With a primary purpose of flood risk reduction, the Upper Tallahatchie Structure Lt-10-11 Dam plays a vital role in protecting the surrounding Tippah County community from potential water-related disasters.
Located in Bluff, Mississippi, this dam is a critical component of the Vicksburg District's water resource infrastructure. With its strategic design and efficient operation, the Upper Tallahatchie Structure Lt-10-11 Dam stands as a testament to effective water management practices in the state, safeguarding the local ecosystem and community from the impacts of flooding and ensuring sustainable water resource utilization for years to come.
Year Completed |
1962 |
Dam Height |
26 |
River Or Stream |
TR- TALLAHATCHIE R; COOK CREEK |
Primary Dam Type |
Earth |
Drainage Area |
0.67 |
Nid Storage |
207 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Tallahatchie River At Etta
|
156cfs |
Hatchie River Near Walnut
|
153cfs |
Twentymile Creek Nr Guntown
|
23cfs |
Wolf River At Lagrange
|
227cfs |
Town Creek At Eason Boulevard At Tupelo
|
65cfs |
Tombigbee River Nr Fulton
|
180cfs |
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.
Upper Tallahatchie Structure Lt-10-11 Dam