Lower Tanyard Swamp Dam Reservoir Report
Nearby: Collins Dam Campbells Dam
Last Updated: December 5, 2025
Lower Tanyard Swamp Dam, located in Caroline, Virginia, is a state-regulated structure under the oversight of the Department of Conservation and Recreation.
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Summary
The dam, standing at a height of 12 feet with a length of 275 feet, serves as a barrier on Tanyard Swamp, contributing to a storage capacity of 66 acre-feet. Despite being rated as "Undetermined" in terms of hazard potential and "Not Rated" in condition assessment, the dam's inspection frequency of once per year ensures ongoing monitoring and maintenance.
The dam's purpose and primary type are unspecified, but its presence highlights the importance of water resource management in the region. As climate change continues to impact precipitation patterns and water availability, structures like Lower Tanyard Swamp Dam play a critical role in regulating flow and mitigating flood risks. With its strategic location and state jurisdiction, the dam represents a key asset in ensuring the resilience of the local ecosystem and communities in the face of changing environmental conditions.
While specific details about the dam's construction year and design features remain unknown, its role in water storage and flood control on Tanyard Swamp underscores the interconnectedness of water resources and climate dynamics. Moving forward, continued assessments, maintenance, and potential risk management measures will be essential to sustain the dam's functionality and safeguard against potential hazards, demonstrating the ongoing commitment to responsible water infrastructure management in the region.
Dam Length |
275 |
Dam Height |
12 |
River Or Stream |
Tanyard Swamp |
Hydraulic Height |
12 |
Nid Storage |
66 |
Structural Height |
12 |
Hazard Potential |
Undetermined |
Nid Height |
12 |
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.
Lower Tanyard Swamp Dam