North Anna Cat I Service Water Dike Reservoir Report
Last Updated: December 8, 2025
The North Anna Cat I Service Water Dike, also known as Cat I Emergency Cooling Water, is a crucial structure owned by a Public Utility in Louisa, Virginia.
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Summary
Completed in 1974, this rockfill dam stands at 37 feet high and stretches 3000 feet in length, with a storage capacity of 177 acre-feet. While the dam is primarily categorized as having a low hazard potential, it is subject to regular inspections by the Nuclear Regulatory Commission to ensure its satisfactory condition and compliance with safety standards.
Located in Mineral, Virginia, the North Anna Cat I Service Water Dike plays a vital role in emergency cooling water provisions for the region. Despite its limited drainage area of 0.14 square miles, the dam's normal storage capacity of 88 acre-feet serves as a reliable resource for water management in the area. With a Satisfactory condition assessment as of 2016, this structure not only serves its intended purpose but also contributes to the overall risk management in the region.
With its historical completion date and continual regulatory oversight, the North Anna Cat I Service Water Dike stands as a testament to effective infrastructure management in the face of potential climate-related risks. As climate enthusiasts and water resource advocates, it is important to recognize the significance of such structures in maintaining water security and emergency preparedness in the face of evolving environmental challenges.
Year Completed |
1974 |
Dam Length |
3000 |
Dam Height |
37 |
River Or Stream |
None |
Primary Dam Type |
Rockfill |
Surface Area |
8.9 |
Drainage Area |
0.14 |
Nid Storage |
177 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
37 |
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.
North Anna Cat I Service Water Dike