River Hills Subdivision Lake Dam Reservoir Report
Nearby: Ms06900 Lake Dam Temple Lake Dam
Last Updated: December 5, 2025
The River Hills Subdivision Lake Dam in Mississippi, constructed in 1974 by the USDA NRCS, serves as a recreational area along the Yockanookany River.
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Summary
This private earth dam, with a height of 15 feet, has a storage capacity of 60 acre-feet and is primarily used for recreation purposes. It is regulated by the Mississippi Department of Environmental Quality and has a low hazard potential.
Although the dam is currently rated as "Not Rated" in terms of its condition assessment, it is under state jurisdiction and has undergone state permitting, inspection, and enforcement. With an uncontrolled spillway and outlet gates, the dam poses a moderate risk (Level 3) according to the risk assessment. Despite this, there have been no recent inspections or updates on emergency action plans, raising concerns about its maintenance and potential safety issues. For water resource and climate enthusiasts, the River Hills Subdivision Lake Dam serves as an important structure for recreational activities but also warrants further attention and monitoring to ensure its continued safety and functionality.
Year Completed |
1974 |
Dam Height |
15 |
River Or Stream |
YOCKANOOKANY -OS |
Primary Dam Type |
Earth |
Nid Storage |
60 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yockanookany River Nr Kosciusko
|
45cfs |
Big Black River At West
|
223cfs |
Pearl River At Edinburg
|
182cfs |
Pearl River Nr Carthage
|
263cfs |
Yockanookany River Nr Ofahoma
|
103cfs |
Pearl River Nr Lena
|
468cfs |
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.
River Hills Subdivision Lake Dam