Middle Fork Obion #4 Reservoir Report
Nearby: Middle Fork Obion #5 Central Point
Last Updated: December 13, 2025
Middle Fork Obion #4, also known as Middle Fork Obion River Dam 4, is a vital structure owned by the local government in Sharon, Tennessee.
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Summary
Designed by the USDA NRCS, this earth dam stands at a hydraulic height of 16.5 feet and a structural height of 30.5 feet, with a length of 800 feet. Completed in 1968, its primary purpose is flood risk reduction, serving to protect the surrounding area from potential water hazards.
Situated on the Middle Fork Obion River, this dam has a normal storage capacity of 54 acre-feet and a maximum storage of 493 acre-feet. With a low hazard potential and a satisfactory condition assessment as of November 2020, Middle Fork Obion #4 is regulated and inspected by the Tennessee Safe Dams Program. Despite its age, this dam continues to effectively mitigate flood risks in the region, showcasing the importance of well-maintained water infrastructure in climate resilience efforts.
Overall, Middle Fork Obion #4 stands as a testament to the collaborative efforts between local government and federal agencies in ensuring the safety and security of communities in Tennessee. As climate change poses increasing challenges to water resources, structures like this play a crucial role in managing flood risks and protecting lives and property along the Middle Fork Obion River.
Year Completed |
1968 |
Dam Length |
800 |
River Or Stream |
MIDDLE FORK OBION RIVER |
Primary Dam Type |
Earth |
Surface Area |
13 |
Hydraulic Height |
16.5 |
Drainage Area |
1.37 |
Nid Storage |
493 |
Structural Height |
30.5 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
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.
Middle Fork Obion #4