Daniel Sullivan Dam Reservoir Report
Nearby: Old Silver Lake Dam Silver Lake Dam
Last Updated: December 5, 2025
Daniel Sullivan Dam, located in Frederick, Virginia, is a private dam regulated by the Department of Conservation and Recreation.
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Summary
Standing at a height of 30.75 feet, this dam provides a maximum storage capacity of 135.55 acre-feet and a normal storage of 101.92 acre-feet. With a surface area of 9.8 acres, this dam plays a crucial role in water resource management in the region.
While the hazard potential of the dam is currently undetermined and its condition is not rated, it is subject to regular inspections with a frequency of once per year. Despite not having a designated purpose or specific dam type, Daniel Sullivan Dam serves as a key structure in the area's water infrastructure. The dam's location within the Baltimore District further highlights its importance in the overall water management system.
As a notable feature in the region, Daniel Sullivan Dam stands as a testament to the intricate network of water resources and climate considerations. With its significant storage capacity and regulatory oversight, this dam plays a vital role in ensuring water security and environmental protection in Frederick, Virginia.
Dam Length |
530 |
Dam Height |
30.75 |
Surface Area |
9.8 |
Hydraulic Height |
30.75 |
Nid Storage |
135.55 |
Structural Height |
30.75 |
Hazard Potential |
Undetermined |
Nid Height |
31 |
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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.
Daniel Sullivan Dam
Capon Bridge To Ends Just South Of Largent