Middle Fork Obion #3 Reservoir Report
Nearby: Central Point Middle Fork Obion #4
Last Updated: December 13, 2025
Middle Fork Obion #3, also known as Middle Fork Obion Dam 3, is a local government-owned structure in Sharon, Henry County, Tennessee.
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Summary
Built in 1968 by the USDA NRCS, this earth-type dam serves the primary purpose of flood risk reduction along the Middle Fork Obion River. With a hydraulic height of 11 feet and a structural height of 25.5 feet, the dam has a storage capacity of 593 acre-feet and covers a surface area of 17 acres.
Managed and regulated by the Tennessee Safe Dams Program, Middle Fork Obion #3 has a low hazard potential and a satisfactory condition assessment as of the last inspection in November 2020. The dam features an uncontrolled spillway type and has no outlet gates or associated structures. Despite its moderate risk assessment rating, the dam meets regulatory guidelines and is subject to regular inspections every three years to ensure its safety and effectiveness in mitigating flood risks in the region. Water resource and climate enthusiasts can appreciate the vital role Middle Fork Obion #3 plays in protecting the local community from potential flooding events along the Middle Fork Obion River.
Year Completed |
1968 |
Dam Length |
675 |
River Or Stream |
MIDDLE FORK OBION RIVER |
Primary Dam Type |
Earth |
Surface Area |
17 |
Hydraulic Height |
11 |
Drainage Area |
1.59 |
Nid Storage |
593 |
Structural Height |
25.5 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
26 |
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 #3