Overby Dam Reservoir Report
Nearby: Franklin Dam Merritt Dam
Last Updated: December 8, 2025
Overby Dam, located in the heart of Patrick, Virginia, stands as a vital water resource in the region.
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Summary
This private Earth dam, with a height of 25 feet and a length of 360 feet, provides storage capacity of 38 acre-feet, with a normal storage level of 28 acre-feet. The dam's purpose and associated structures are not specified, but its regulatory oversight and maintenance are managed by the Department of Conservation and Recreation in Virginia.
Despite its significant role in water management, the condition assessment of Overby Dam is currently listed as "Not Rated," and its hazard potential is labeled as "Undetermined." The dam's emergency action plan status, risk assessment, and management measures are also not documented. However, the dam has a regular inspection frequency of once per year, ensuring ongoing monitoring and maintenance to uphold its structural integrity and safety standards. As a critical infrastructure in the region, further evaluation and risk management protocols may be necessary to safeguard against potential hazards and ensure the continued reliability of Overby Dam for water resource and climate enthusiasts alike.
Dam Length |
360 |
Dam Height |
25 |
Primary Dam Type |
Earth |
Surface Area |
3.2 |
Hydraulic Height |
25 |
Nid Storage |
38 |
Structural Height |
25 |
Hazard Potential |
Undetermined |
Nid Height |
25 |
Seasonal Comparison
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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.
Overby Dam