Old Mountain South Dam Reservoir Report
Nearby: Old Mountain North Dam Cox Dam
Last Updated: December 7, 2025
Old Mountain South Dam in Louisa, Virginia, is a crucial structure managed by the Department of Conservation and Recreation.
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Summary
This earth dam, with a height of 26 feet, serves as a fish and wildlife pond, providing essential habitat for local species. Despite its importance, the dam's hazard potential is currently marked as undetermined, highlighting the need for further assessment and monitoring.
Located near tributary Campbell Creek, the dam has a storage capacity of 90 acre-feet, making it a vital resource for water management in the area. While the condition assessment is not rated, regular inspections are conducted to ensure the safety and integrity of the structure. With Virginia State jurisdiction, regulatory agencies, permitting, and enforcement in place, the Old Mountain South Dam plays a significant role in supporting the local ecosystem and water resources.
As climate change continues to impact water availability and quality, dams like Old Mountain South are essential for maintaining biodiversity and managing water resources effectively. With its primary purpose as a fish and wildlife pond, the dam serves as a valuable asset for conservation efforts in the region. As water resource and climate enthusiasts, understanding and supporting the maintenance and regulation of structures like Old Mountain South Dam is crucial for promoting sustainable water management practices and protecting ecosystems for future generations.
Dam Height |
26 |
River Or Stream |
trib. Campbell Creek |
Hydraulic Height |
26 |
Nid Storage |
90 |
Structural Height |
26 |
Hazard Potential |
Undetermined |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Anna River Near Partlow
|
49cfs |
James River At Cartersville
|
1950cfs |
Rivanna River At Palmyra
|
175cfs |
Fine Creek At Fine Creek Mills
|
3cfs |
South Anna River Near Ashland
|
110cfs |
Little River Near Doswell
|
27cfs |
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.
Old Mountain South Dam