South River Dam #11 Reservoir Report

Last Updated: December 5, 2025

South River Dam #11, also known as Canada Run, is a crucial flood risk reduction structure located in Augusta, Virginia.


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Summary

Owned by the local government, this earth-type dam stands at a height of 27 feet and spans a length of 1150 feet, with a storage capacity of 292 acre-feet. The dam is situated on the Canada Run stream, within the jurisdiction of the Department of Conservation and Recreation in Virginia.

With a Hazard Potential rating of 'High', South River Dam #11 is regularly inspected and deemed to be in satisfactory condition as of March 2021. It serves as a vital component in managing flood risks in the area, with a primary purpose of flood risk reduction. The dam has a normal storage capacity of 24 acre-feet and covers a surface area of 6 acres, providing protection to a drainage area of 1.4 square miles.

Ensuring the safety and effectiveness of South River Dam #11 is a top priority, with state regulatory agencies overseeing permitting, inspection, and enforcement measures. The dam plays a crucial role in safeguarding the surrounding communities from potential inundation, showcasing the importance of sustainable water resource management in the face of changing climate conditions.

Dam Length

1150

Dam Height

27

River Or Stream

CANADA RUN

Primary Dam Type

Earth

Surface Area

6

Hydraulic Height

27

Drainage Area

1.4

Nid Storage

292

Structural Height

27

Hazard Potential

High

Nid Height

27
       
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.