Dike B - Keowee Reservoir Report

Last Updated: December 5, 2025

Dike B on the Keowee River in South Carolina is a crucial piece of infrastructure that serves multiple purposes, including hydroelectric power generation, recreation, and water supply.


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Summary

Completed in 1969, this earth dam stands at a height of 15 feet and spans 220 feet in length. With a normal storage capacity of 99,586 acre-feet and a maximum storage of 955,586 acre-feet, Dike B plays a significant role in managing water resources in the region.

Owned by a public utility and regulated by the Federal Energy Regulatory Commission, Dike B has a high hazard potential and is classified as having a high risk level. While the condition assessment is not currently available, emergency action plans have been prepared and updated to ensure the safety and security of the dam. With its location in Oconee County, South Carolina, Dike B is a vital component of the water infrastructure in the area, providing essential services to the surrounding community.

As a key part of the water management system on the Keowee River, Dike B is a critical structure that requires regular inspections and maintenance to mitigate potential risks. With its proximity to Newry, SC, the dam serves as a key player in flood control, water storage, and power generation. The collaborative efforts of various agencies, including the Federal Energy Regulatory Commission, ensure the safe and efficient operation of Dike B for the benefit of the region's water resources and climate resilience.

Year Completed

1969

Dam Length

220

Dam Height

15

River Or Stream

Keowee

Primary Dam Type

Earth

Surface Area

18372

Hydraulic Height

15

Nid Storage

955586

Structural Height

15

Hazard Potential

High

Foundations

Soil

Nid Height

15
       
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.