Grass Creek Reservoir Report
Nearby: Bruce Creek Turner
Last Updated: December 12, 2025
Grass Creek in Obion, Tennessee, is a state-regulated Earth dam completed in 1987 that stands at a structural height of 15.5 feet.
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Summary
It is situated on the Obion River and is under the supervision of the Tennessee Safe Dams Program. The dam has a storage capacity of 160 acre-feet and a drainage area of 0.33 square miles.
Despite its low hazard potential, Grass Creek's condition assessment in 2019 was deemed unsatisfactory, highlighting a need for maintenance and improvements. The dam is equipped with an uncontrolled spillway and has no outlet gates. Its risk assessment was categorized as moderate, indicating a level 3 risk. Grass Creek is a significant water resource structure in the region and plays a crucial role in managing water flow and storage in the area.
Enthusiasts of water resources and climate in the region should keep a close eye on Grass Creek's maintenance and risk management measures to ensure the safety and efficiency of this vital Earth dam. With its location on the Obion River and its critical role in water storage, the condition of Grass Creek and its regulatory oversight by the Tennessee Safe Dams Program are essential factors for water resource management and climate resilience in the area.
Year Completed |
1987 |
Dam Length |
615 |
River Or Stream |
OBION RIVER |
Primary Dam Type |
Earth |
Drainage Area |
0.33 |
Nid Storage |
160 |
Structural Height |
15.5 |
Outlet Gates |
None |
Hazard Potential |
Low |
Nid Height |
16 |
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.
Grass Creek