Rose Hill (Estates) Dam Reservoir Report

Last Updated: December 6, 2025

Rose Hill (Estates) Dam, located in Hanover, Virginia, serves as a critical regional stormwater facility known as B-5.


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Summary

Owned by the local government, this earth dam stands at 27 feet tall and stretches 290 feet in length, with a primary purpose of flood risk reduction along a tributary to Beaverdam Creek. With a storage capacity of 84 acre-feet and a normal storage level of 29.7 acre-feet, the dam plays a vital role in managing water resources in the area.

The dam, regulated by the Department of Conservation and Recreation, has a significant hazard potential but was deemed to be in satisfactory condition during its last assessment in December 2020. With a designated inspection frequency of once per year, the dam is designed to withstand hydraulic pressures and prevent potential inundation in the surrounding area. Although no major modifications have been reported since its construction, the dam continues to be a key infrastructure for flood protection and water resource management in Hanover County.

As climate change brings about more extreme weather events, the importance of structures like the Rose Hill (Estates) Dam in mitigating flood risks and protecting communities becomes increasingly apparent. With its strategic location and efficient design, this dam stands as a testament to the proactive measures taken to safeguard against water-related disasters and ensure the sustainable management of water resources in the region.

Dam Length

290

Dam Height

27

River Or Stream

trib. to Beaverdam Creek

Primary Dam Type

Earth

Surface Area

4.7

Hydraulic Height

27

Drainage Area

0.58

Nid Storage

84

Structural Height

27

Hazard Potential

Significant

Nid Height

27
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.