Long Creek Watershed Structure Y-11a-14 Dam Reservoir Report
Nearby: Ms07205 Lake Dam J Steed Lake Dam
Last Updated: December 6, 2025
The Long Creek Watershed Structure Y-11a-14 Dam, also known as the Atalla Generating Co., LLC Dam, is a vital flood risk reduction infrastructure located in Sallis, Mississippi.
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Summary
Constructed in 1976 by the USDA NRCS, this earth dam stands at a height of 26 feet with a hydraulic height of 14 feet. It serves to protect the surrounding area from potential flooding events and is regulated by the MS Department of Environmental Quality. With a storage capacity of 674 acre-feet and a drainage area of 1.71 square miles, this dam plays a crucial role in managing water resources in the region.
The primary purpose of the Long Creek Watershed Structure Y-11a-14 Dam is flood risk reduction, and it is maintained by the local government in Attala County, Mississippi. The dam features an uncontrolled spillway type and outlet gates, with a hazard potential rated as low and a moderate risk assessment score. While the structure has not been rated for its condition, it is regularly inspected, and emergency action plans are in place to ensure the safety of the community in case of any unforeseen events. The dam's strategic location along the TR-Long Creek river stream underscores its significance in water resource management and climate resilience efforts in the region.
Overall, the Long Creek Watershed Structure Y-11a-14 Dam stands as a testament to effective flood risk reduction infrastructure in Mississippi. Managed by the local government and designed by the USDA NRCS, this earth dam plays a vital role in safeguarding the community from potential flooding events. With its low hazard potential and moderate risk assessment, the dam serves as a crucial component of water resource management in Attala County, Mississippi, highlighting the importance of sustainable infrastructure in addressing climate challenges.
Year Completed |
1976 |
Dam Height |
26 |
River Or Stream |
TR- LONG CREEK |
Primary Dam Type |
Earth |
Surface Area |
130 |
Hydraulic Height |
14 |
Drainage Area |
1.71 |
Nid Storage |
674 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yockanookany River Nr Kosciusko
|
45cfs |
Big Black River At West
|
223cfs |
Yockanookany River Nr Ofahoma
|
103cfs |
Pearl River Nr Carthage
|
263cfs |
Pearl River Nr Lena
|
468cfs |
Harland Creek Nr Howard
|
3340cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Kosciusko Bicycle-only Campground, milepost 160
|
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Kosciusko Welcome Center Bike Only Camping
|
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Holmes County State Park
|
Long Creek Watershed Structure Y-11a-14 Dam