Rodney Mortimer Lake Dam Reservoir Report
Last Updated: December 5, 2025
Rodney Mortimer Lake Dam, located in Winona, Mississippi, was completed in 1977 by the USDA NRCS and serves as a recreational site for water resource and climate enthusiasts.
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Summary
This private dam, standing at 14 feet in height, holds a storage capacity of 70 acre-feet and is primarily used for recreation purposes. The dam is classified as an earth dam with a buttress core and soil foundation, posing a low hazard potential and rated as not yet assessed in terms of condition.
Managed by the Mississippi Department of Environmental Quality, the dam is state-regulated and complies with permitting, inspection, and enforcement requirements. The spillway type is uncontrolled, and outlet gates are also uncontrolled. The risk assessment for the dam is moderate, with a DSAC assigned date pending. Despite its relatively low hazard potential, the Rodney Mortimer Lake Dam serves as an important recreational site in Montgomery County, offering visitors a calm and serene environment to enjoy nature and water activities.
Year Completed |
1977 |
Dam Height |
14 |
River Or Stream |
TR- HAYS CREEK |
Primary Dam Type |
Earth |
Nid Storage |
70 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Batupan Bogue At Grenada
|
134cfs |
Big Black River At West
|
223cfs |
Yalobusha River At Grenada
|
3080cfs |
Tallahatchie River At Money
|
6080cfs |
Yockanookany River Nr Kosciusko
|
45cfs |
Abiaca Creek At Cruger
|
44cfs |
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.
Rodney Mortimer Lake Dam