Gwathmeys Dam Reservoir Report
Last Updated: December 6, 2025
Gwathmeys Dam, located in King and Queen County, Virginia, is a private-owned structure with a primary purpose of recreation.
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Summary
This earth-type dam spans 500 feet in length and stands at a height of 24 feet, providing a storage capacity of 169 acre-feet. Situated on a tributary of the Mattaponi River, the dam is regulated by the Department of Conservation and Recreation, ensuring its compliance with state permitting, inspection, and enforcement requirements.
While the hazard potential and condition assessment of Gwathmeys Dam are currently undetermined and not rated, respectively, the structure's emergency action plan status and risk management measures remain unreported. Despite these uncertainties, the dam's location and design make it a notable feature for water resource and climate enthusiasts. As a popular recreational site, Gwathmeys Dam offers visitors a chance to enjoy the surrounding natural beauty while also serving as a crucial component of water resource management in the region.
With its picturesque setting and vital role in water storage and regulation, Gwathmeys Dam stands as a significant landmark in the Norfolk District. As enthusiasts continue to explore and appreciate the intersection of water resources and climate dynamics, this dam serves as a prime example of how private ownership can contribute to both recreational activities and environmental stewardship in Virginia's diverse landscape.
Dam Length |
500 |
Dam Height |
24 |
River Or Stream |
trib. Mattaponi R. |
Primary Dam Type |
Earth |
Hydraulic Height |
24 |
Nid Storage |
169 |
Structural Height |
24 |
Hazard Potential |
Undetermined |
Nid Height |
24 |
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.
Gwathmeys Dam