D.O.E. Savannah River Pond B Reservoir Report

Last Updated: December 6, 2025

D.O.E.


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Summary

Savannah River Pond B, also known as 685-13g, is a Federal-owned structure located in Martin, Barnwell, South Carolina. This dam was completed in 1960 and serves as an important water resource in the area, with a primary purpose of "Other". The dam is an Earth-type structure, with a height of 50 feet and a length of 1750 feet. It has a storage capacity of 4413 acre-feet and a low hazard potential.

The dam is managed by the Department of Energy, which is also responsible for funding, designing, constructing, regulating, inspecting, and operating the structure. While the dam has not been modified in recent years, it is subject to regular inspections every 2 years. The risk assessment for D.O.E. Savannah River Pond B is rated as moderate, with a moderate risk level of 3.

Overall, D.O.E. Savannah River Pond B plays a vital role in water resource management in the area, providing storage capacity and regulating water flow in the Lower Three Runs-TR river/stream. With its low hazard potential and moderate risk assessment, this dam serves as a key infrastructure for climate and water resource enthusiasts to monitor and study in the region.

Year Completed

1960

Dam Length

1750

Dam Height

50

River Or Stream

LOWER THREE RUNS-TR

Primary Dam Type

Earth

Surface Area

257

Hydraulic Height

44

Drainage Area

4.3

Nid Storage

4413

Structural Height

50

Outlet Gates

None

Hazard Potential

Low

Foundations

Rock

Nid Height

50
       
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.