Thoroughgood Dam Reservoir Report
Last Updated: December 21, 2025
Thoroughgood Dam, also known as City No.
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Summary
58, Lake Charles, and Swan Lake, is a private-owned structure located in Virginia Beach, Virginia. This dam plays a crucial role in flood risk reduction along the Wolfnsare Creek and Lynnhaven River Western Branch. Built primarily for this purpose, Thoroughgood Dam stands at a height of 8 feet with a length of 330 feet, providing a maximum storage capacity of 133 acre-feet.
Managed by the Department of Conservation and Recreation in Virginia, Thoroughgood Dam is regulated, permitted, inspected, and enforced by state agencies to ensure its safe operation. While its hazard potential and condition assessment are currently undetermined and not rated, the dam remains a vital piece of infrastructure in protecting the surrounding area from flooding. With a normal storage capacity of 55.5 acre-feet and a surface area of 18.5 acres, Thoroughgood Dam serves as a critical asset in water resource management and climate resilience efforts in the region.
Despite lacking specific information on its year of completion or modifications, Thoroughgood Dam continues to serve its primary purpose of flood risk reduction effectively. With a buttress core and earth dam type, this structure stands as a testament to the importance of proper water management in safeguarding communities and ecosystems from the impacts of extreme weather events. As water resource and climate enthusiasts, understanding the role and significance of dams like Thoroughgood is key to advocating for sustainable practices in water infrastructure development and maintenance.
Dam Length |
330 |
Dam Height |
8 |
River Or Stream |
Wolfsnare Creek/Lynnhaven River Western Branch - VAHU6 CB25 Lynnhaven River |
Primary Dam Type |
Earth |
Surface Area |
18.5 |
Nid Storage |
133 |
Hazard Potential |
Undetermined |
Foundations |
Unlisted/Unknown |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pasquotank River Near South Mills
|
51cfs |
Blackwater River Near Dendron
|
129cfs |
Blackwater River Near Franklin
|
260cfs |
Nottoway River Near Sebrell
|
885cfs |
Dragon Swamp At Mascot
|
72cfs |
Potecasi Creek Near Union
|
12cfs |
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.
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Virginia Beach Boulevard 4336, Virginia Beach