Dry Branch Reservoir Report
Last Updated: December 10, 2025
Dry Branch is a state-regulated dam located in Gibson, Tennessee, with a low hazard potential and a satisfactory condition assessment.
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Summary
Built in 1989, this Earth type dam stands at a structural height of 40 feet and has a hydraulic height of 17 feet, providing a maximum storage capacity of 411 acre-feet. With a surface area of 5.5 acres and a drainage area of 0.83 square miles, Dry Branch serves as a crucial water resource in the region.
Managed by the Tennessee Safe Dams Program, Dry Branch undergoes regular state inspections and enforcement to ensure its safety and functionality. The dam features an uncontrolled spillway type and has no outlet gates or associated structures. Despite its moderate risk assessment rating, Dry Branch continues to play a vital role in water supply and management in the area, contributing to the overall sustainability and resilience of the region's water resources.
As a key component of the water infrastructure in Gibson County, Dry Branch serves as a critical resource for water supply and flood control. With its moderate risk level and satisfactory condition, the dam highlights the importance of ongoing monitoring and maintenance to ensure the safety and effectiveness of water management systems in the face of changing climate conditions. Climate enthusiasts and water resource professionals alike can appreciate the role that dams like Dry Branch play in managing water resources and mitigating the impacts of climate change on local communities.
Year Completed |
1989 |
Dam Length |
770 |
River Or Stream |
DRY BRANCH |
Primary Dam Type |
Earth |
Surface Area |
5.5 |
Hydraulic Height |
17 |
Drainage Area |
0.83 |
Nid Storage |
411 |
Structural Height |
40 |
Outlet Gates |
None |
Hazard Potential |
Low |
Nid Height |
40 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Dry Branch