Long Branch Reservoir Dam Reservoir Report
Last Updated: December 13, 2025
Long Branch Reservoir Dam, located in Locust Grove, Henry County, Georgia, serves as a crucial water supply source for the surrounding area.
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Summary
The dam, primarily owned and regulated by the local government, stands at a height of 81.5 feet and has a storage capacity of 10,275 acre-feet, with a normal storage level of 5,560 acre-feet. The dam is classified as an earth dam with a buttress core type, and it is designated as a high hazard potential structure due to its proximity to populated areas.
Despite its high hazard potential, Long Branch Reservoir Dam has been assessed as satisfactory in condition, with its last inspection conducted in January 2016. The dam is equipped with uncontrolled spillways and outlet gates, and it falls under the jurisdiction of the Georgia Safe Dams Program for regulation and enforcement. While the dam has a moderate risk rating, with a risk assessment score of 3, there are currently no specific risk management measures outlined for the structure. Overall, Long Branch Reservoir Dam plays a vital role in providing water resources to the region while also posing certain risks that require ongoing monitoring and management.
Dam Height |
81.5 |
River Or Stream |
Long Branch |
Primary Dam Type |
Earth |
Surface Area |
135 |
Nid Storage |
10275 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
82 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Shoal Creek At Shoal Creek Rd
|
13cfs |
Pates Creek At Buster Lewis Rd Near Flippen
|
21cfs |
Flint River Near Lovejoy
|
63cfs |
Ocmulgee River Near Jackson
|
534cfs |
Flint River Near Griffin
|
80cfs |
Honey Creek At Ga 212
|
14cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Long Branch Reservoir Dam