Lake Anna Dam And Reservoir - Dike Ii Reservoir Report
Last Updated: December 8, 2025
Lake Anna Dam and Reservoir - Dike II is a vital water resource structure located in Louisa, Virginia, designed by Stone & Webster Engineering Corp.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1972, this earth dam stands at 23 feet high and has a storage capacity of 487,000 acre-feet, primarily serving as a water supply for the region. With a surface area of 13,000 acres, the dam plays a crucial role in ensuring water availability for the surrounding area.
Managed by the Federal Energy Regulatory Commission, Lake Anna Dam and Reservoir - Dike II has a low hazard potential and a high risk assessment rating. While it lacks certain regulatory oversight at the state level, the dam is inspected every three years to ensure its structural integrity and safety. The dam's associated structures include VA177002, VA177002S001, VA177002S003, VA177002S004, and VA177002S005, all contributing to the effective management of water resources in the region.
Located on the North Anna River within the Baltimore District, Lake Anna Dam and Reservoir - Dike II is a significant infrastructure for water storage and supply. With its strategic design and purpose, the dam serves as a critical component of the area's water management system, highlighting the importance of sustainable water resource practices in the face of climate change and increasing water demands.
Year Completed |
1972 |
Dam Length |
3860 |
Dam Height |
23 |
River Or Stream |
North Anna |
Primary Dam Type |
Earth |
Surface Area |
13000 |
Hydraulic Height |
23 |
Nid Storage |
487000 |
Structural Height |
23 |
Hazard Potential |
Low |
Foundations |
Rock |
Nid Height |
23 |
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.
Lake Anna Dam And Reservoir - Dike Ii