Black Watershed Structure Y-36-37 Dam Reservoir Report
Last Updated: December 6, 2025
Black Watershed Structure Y-36-37 Dam, also known as Brown Dam, is a local government-owned structure located in Lexington, Mississippi.
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Summary
Constructed in 1967 by the USDA NRCS, this earth dam stands at a height of 40 feet and serves the primary purpose of flood risk reduction along the TR- TARREY CREEK. With a storage capacity of 1707 acre-feet, the dam is designed with a buttress core and sits on a soil foundation.
Managed by the Mississippi Department of Environmental Quality, the Black Watershed Structure Y-36-37 Dam is state-regulated for permitting, inspection, and enforcement. Despite being rated as a low hazard potential structure, the dam has not undergone a formal condition assessment and lacks an Emergency Action Plan. However, its risk assessment indicates a moderate risk level, suggesting a need for ongoing monitoring and potential risk management measures to ensure its continued safety and functionality.
Although not owned or funded by federal agencies, the dam falls under the jurisdiction of the Vicksburg District of the US Army Corps of Engineers. With uncontrolled spillways and outlet gates, the structure poses a moderate risk but plays a crucial role in mitigating flood risks in the region. As a key component of water resource management in Holmes County, Mississippi, the Black Watershed Structure Y-36-37 Dam underscores the importance of sustainable infrastructure for climate resilience and water security in the face of changing environmental conditions.
Year Completed |
1967 |
Dam Height |
40 |
River Or Stream |
TR- TARREY CREEK |
Primary Dam Type |
Earth |
Drainage Area |
4.97 |
Nid Storage |
1707 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
40 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Harland Creek Nr Howard
|
3340cfs |
Big Black River At West
|
190cfs |
Abiaca Creek At Cruger
|
44cfs |
Yockanookany River Nr Kosciusko
|
54cfs |
Yockanookany River Nr Ofahoma
|
96cfs |
Pearl River Nr Lena
|
532cfs |
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.
Black Watershed Structure Y-36-37 Dam