Black Watershed Structure Y-36-48 Dam Reservoir Report
Last Updated: December 7, 2025
Black Watershed Structure Y-36-48 Dam, also known as Montgomery Dam, is a crucial flood risk reduction infrastructure located in Holmes County, Mississippi.
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Summary
Built in 1966 by the USDA NRCS, this earth dam stands at a height of 40 feet and has a storage capacity of 1358 acre-feet. It serves to control the flow of TR-Black Creek and is regulated by the Mississippi Department of Environmental Quality.
This low hazard potential dam features an uncontrolled spillway and outlet gates, with a primary purpose of flood risk reduction. Despite its moderate risk assessment, the dam's condition is currently not rated, highlighting the need for further inspection and assessment. The local government is responsible for the upkeep and enforcement of regulations related to the dam, ensuring the safety of the surrounding communities in the event of a flood event. For water resource and climate enthusiasts, Black Watershed Structure Y-36-48 Dam presents an intriguing case study in flood management and infrastructure maintenance in the state of Mississippi.
Year Completed |
1966 |
Dam Height |
40 |
River Or Stream |
TR- BLACK CREEK |
Primary Dam Type |
Earth |
Drainage Area |
3.45 |
Nid Storage |
1358 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
40 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Harland Creek Nr Howard
|
3340cfs |
Abiaca Creek At Cruger
|
44cfs |
Big Black River Nr Bentonia
|
502cfs |
Big Black River At West
|
190cfs |
Yockanookany River Nr Kosciusko
|
54cfs |
Yockanookany River Nr Ofahoma
|
96cfs |
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-36-48 Dam