Sowashee Creek Ws Str 11 Dam Reservoir Report
Last Updated: December 6, 2025
Sowashee Creek WS Str 11 Dam is a vital structure located in Lauderdale, Mississippi, with a primary purpose of flood risk reduction.
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Summary
Built in 1978 by USDA NRCS, this earth dam stands at a height of 37 feet and has a storage capacity of 321 acre-feet. Despite being categorized as having a high hazard potential, the dam is currently assessed to be in fair condition as of the last inspection in February 2020, with a moderate risk rating of 3.
The dam is regulated by the Mississippi Department of Environmental Quality and undergoes regular inspections, with an inspection frequency of 5 years. The spillway is uncontrolled, and the outlet gates are also uncontrolled. The surrounding area covers a drainage area of 0.79 square miles, with the dam impounding water from the UNT of Sowashee Creek. With its critical role in flood risk reduction, water resource and climate enthusiasts can appreciate the engineering and management efforts put in place to ensure the safety and functionality of Sowashee Creek WS Str 11 Dam.
Year Completed |
1978 |
Dam Height |
37 |
River Or Stream |
UNT OF SOWASHEE CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Drainage Area |
0.79 |
Nid Storage |
321 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
37 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Sowashee Creek At Meridian
|
16cfs |
Okatibbee Creek At Arundel
|
89cfs |
Chunky River Nr Chunky
|
301cfs |
Chickasawhay River At Enterprise
|
546cfs |
Sucarnoochee River At Livingston Al
|
272cfs |
Bodka Creek Near Geiger
|
15cfs |
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.
Sowashee Creek Ws Str 11 Dam