Robert Riley Lake Dam Reservoir Report
Last Updated: December 7, 2025
Robert Riley Lake Dam, located in Morgantown, Mississippi, serves as a vital recreational site in the Jefferson Davis County area.
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Summary
Built in 1973 by the USDA NRCS, this private-owned Earth dam stands at 24 feet in height, with a storage capacity of 100 acre-feet. The primary purpose of this dam is for recreation, providing a serene environment for water resource and climate enthusiasts to enjoy the beauty of nature.
Managed by the Mississippi Department of Environmental Quality, Robert Riley Lake Dam is regulated, inspected, and enforced to ensure safety and compliance with state standards. Despite its low hazard potential, the dam is classified with a moderate risk level, indicating a need for ongoing risk management measures. The dam's spillway is of the uncontrolled type, emphasizing the importance of proper maintenance and monitoring to prevent potential risks to downstream areas.
With its picturesque location on TR- Little White Sand Creek and under the jurisdiction of the Vicksburg District, Robert Riley Lake Dam stands as a testament to the importance of sustainable water resource management in Mississippi. As water resource and climate enthusiasts continue to appreciate this recreational site, it is essential to prioritize safety and environmental conservation to ensure the long-term integrity of this valuable community asset.
Year Completed |
1973 |
Dam Height |
24 |
River Or Stream |
TR- LITTLE WHITE SAND CREEK |
Primary Dam Type |
Earth |
Nid Storage |
100 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pearl River Nr Monticello
|
1750cfs |
Pearl River Nr Rockport
|
1670cfs |
Pearl River Nr Columbia
|
2740cfs |
Okatoma Creek At Sanford
|
219cfs |
Bouie Creek Nr Hattiesburg
|
271cfs |
Strong River At D`Lo
|
222cfs |
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.
Robert Riley Lake Dam