Bishop Lake Dam Reservoir Report

Last Updated: December 5, 2025

Bishop Lake Dam, located in Cobb, Georgia, was completed in 1945 and serves as a vital recreational spot for water resource and climate enthusiasts.


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Summary

With a dam height of 27 feet and a hydraulic height of 23 feet, it provides a storage capacity of 399 acre-feet and covers a surface area of 24 acres. The dam, built primarily for recreational purposes, stands on the Bishop Creek and is regulated by the GA-SAFE DAMS PROGRAM.

Despite its satisfactory condition assessment as of February 2016, Bishop Lake Dam has a high hazard potential, making it crucial for regular inspections and maintenance. The dam operates with uncontrolled spillways and outlet gates, with a drainage area of 650 square miles. With a moderate risk assessment rating of 3, it is essential for authorities to monitor the dam closely to ensure the safety of the surrounding community and the environment. The dam's risk management measures and emergency action plan readiness remain unspecified, highlighting a potential area for improvement in safeguarding against any unforeseen events.

Year Completed

1945

Dam Length

375

Dam Height

27

River Or Stream

BISHOP CREEK

Primary Dam Type

Earth

Surface Area

24

Hydraulic Height

23

Drainage Area

650

Nid Storage

399

Outlet Gates

Uncontrolled

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

27
       
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.