Herns Pond Reservoir Report
Nearby: Gouldmans Dam Delos Lake Upper
Last Updated: January 11, 2026
Herns Pond, located in Port Royal, Virginia, is a man-made reservoir that was completed in 1950 by the US Army for recreational purposes.
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Summary
The dam, primarily constructed of earth and stone, stands at a height of 18 feet and has a maximum storage capacity of 68 acre-feet. With a normal storage capacity of 24 acre-feet and a surface area of 5 acres, Herns Pond serves as a fire protection and fish and wildlife pond, in addition to providing opportunities for recreation.
Managed by the US Army, Herns Pond has a low hazard potential and is inspected every 4 years to ensure its safety and functionality. The uncontrolled spillway, with a width of 15 feet, allows for controlled discharge of water during periods of excess flow. Despite its small drainage area of 0 acres, the pond plays a crucial role in water resource management in the region. With a moderate risk assessment rating, measures are in place to address potential risks and emergencies, though specific details on risk management and mitigation strategies are not available at this time.
For water resource and climate enthusiasts, Herns Pond offers a unique opportunity to explore the intersection of human intervention, recreational use, and environmental stewardship. As a part of the Mill Creek Tr watershed in Caroline County, Virginia, the pond exemplifies the delicate balance between human needs and natural ecosystems. By understanding the design, purpose, and management of Herns Pond, enthusiasts can gain valuable insights into how water resources are harnessed and protected for the benefit of local communities and wildlife alike.
Year Completed |
1950 |
Dam Length |
380 |
Dam Height |
18 |
River Or Stream |
Mill Creek Tr |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
11 |
Nid Storage |
68 |
Structural Height |
18 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
18 |
Seasonal Comparison
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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.
Herns Pond