Greenwood Sediment Pond Reservoir Report

Last Updated: December 8, 2025

Greenwood Sediment Pond, Basin 154 is a privately-owned Earth dam located in Bedford, Virginia, just 12 miles away from the City of Roanoke.


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Summary

Managed by the Mine Safety and Health Administration, this significant dam stands at a height of 30 feet and spans a length of 258 feet. While the specific purposes and storage capacities of the pond are not detailed, its hazard potential is classified as "significant," indicating the importance of proper maintenance and monitoring.

Despite not being regulated by the state, Greenwood Sediment Pond is subject to inspections by the Mine Safety and Health Administration, with the last recorded inspection dating back to December 2009. The condition assessment of the dam is currently listed as "Not Available," highlighting a potential need for updated evaluations and risk assessments in the future. Emergency action preparedness and risk management measures also appear to be lacking, suggesting a need for improved safety protocols and guidelines to mitigate potential hazards.

Overall, Greenwood Sediment Pond, Basin 154 presents an intriguing case study for water resource and climate enthusiasts, showcasing the complexities of dam management and the importance of regular inspections and maintenance. With its location in a congressional district in Virginia and under the oversight of a federal agency, there is a unique intersection of regulatory oversight and potential environmental risks that warrant further attention and monitoring in the future.

Dam Length

258

Dam Height

30

Primary Dam Type

Earth

Hazard Potential

Significant

Nid Height

30
       
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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.