Roanoke Creek Dam # 70a Reservoir Report
Last Updated: December 6, 2025
Roanoke Creek Dam # 70a, also known as Keysville Lake or Keysville Reservoir, is a significant earth dam located in Keysville, Virginia, owned by the local government.
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Summary
The dam serves multiple purposes including flood risk reduction, recreation, and most importantly, water supply. It stands at a height of 36.1 feet with a length of 720 feet, providing a storage capacity of 1,506 acre-feet and a surface area of 42.3 acres.
Managed by the Department of Conservation and Recreation in Virginia, Roanoke Creek Dam # 70a is state-regulated and undergoes regular inspections to ensure its safety. The dam has been assessed as satisfactory in condition, with a significant hazard potential due to its location in the area. The last inspection in November 2017 deemed the dam to be in a satisfactory state, meeting guidelines and regulations for emergency action plans.
With a drainage area of 2.74 square miles and a maximum discharge capacity of 5,600 cubic feet per second, Roanoke Creek Dam # 70a plays a crucial role in water resource management in the region. Its construction and maintenance are carefully monitored to protect the surrounding community and ensure a reliable water supply for the area.
Dam Length |
720 |
Dam Height |
36.1 |
River Or Stream |
Spring Creek; VAHU6 RU81 Roanoake Creek - Spring Creek |
Primary Dam Type |
Earth |
Surface Area |
42.3 |
Drainage Area |
2.74 |
Nid Storage |
1506 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
36 |
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.
Roanoke Creek Dam # 70a