Landfill No. 2 Dam Reservoir Report

Last Updated: December 5, 2025

Landfill No.


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Summary

2 Dam, also known as Westvaco #2 Flyash Lagoon Dam, is a privately owned structure located in Alleghany, Virginia. This earth dam stands at an impressive height of 184 feet and has a storage capacity of 1,496 acre-feet, making it a significant water resource in the area. The dam is regulated by the Department of Conservation and Recreation in Virginia and is inspected regularly to ensure its safety and structural integrity.

With a hazard potential rated as high, Landfill No. 2 Dam poses a potential risk if not properly maintained. However, as of the last inspection in August 2020, its condition was deemed satisfactory. The dam serves a primary purpose classified as "Other," indicating its versatile role in water management and environmental protection. Its location near Dunlap Creek Off Stream makes it an essential feature in the region's water infrastructure.

While specific details about the dam's construction date and spillway type are not available, its impressive dimensions and storage capacity highlight its importance as a key water management structure in Virginia. Its role in flood control and water storage, along with its high hazard potential, make Landfill No. 2 Dam a significant asset for water resource and climate enthusiasts to monitor and study in the context of sustainable water management practices.

Dam Length

650

Dam Height

184

River Or Stream

DUNLAP CR.-OFF STREAM

Primary Dam Type

Earth

Surface Area

7.78

Hydraulic Height

184

Drainage Area

0.1

Nid Storage

1496

Structural Height

184

Hazard Potential

High

Nid Height

184
       
Seasonal Comparison

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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.