Ashland Mill Dam Reservoir Report
Nearby: Reisinger Dam Mannheim Dam
Last Updated: December 23, 2025
Ashland Mill Dam, located in Hanover, Virginia, along the South Anna River, is a concrete structure primarily used for recreation purposes.
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Summary
Standing at a height of 14 feet, the dam has a storage capacity of 70 acre-feet and is regulated by the Department of Conservation and Recreation in Virginia. Although the dam's hazard potential is currently undetermined and its condition has not been rated, regular inspections are conducted to ensure its safety.
While the exact year of completion is unknown, Ashland Mill Dam serves to reduce flood risks in the area while providing recreational opportunities for locals and visitors. The dam's proximity to the Norfolk District of the USACE and its construction by a private entity indicate a collaborative effort in managing water resources and climate impacts in the region. Despite lacking certain key details, such as spillway type and width, the dam remains a notable feature along the South Anna River, attracting enthusiasts interested in water resource management and climate resilience.
Dam Height |
14 |
River Or Stream |
South Anna River |
Primary Dam Type |
Concrete |
Hydraulic Height |
14 |
Drainage Area |
451.9 |
Nid Storage |
70 |
Structural Height |
14 |
Hazard Potential |
Undetermined |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Ashland Mill Dam