Nab Drennen Dam Number 2 Reservoir Report
Nearby: Nab Drennen Dams W.D.Johnston Dam
Last Updated: December 25, 2025
Nab Drennen Dam Number 2, located in Greene, Alabama, is a privately owned structure built in 1955 for recreational purposes along the Tombigbee River.
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Summary
With a hydraulic height of 21 feet and a structural height of 23 feet, the dam stands at a length of 400 feet. It has a storage capacity of 50 acre-feet and a maximum discharge rate of 54 cubic feet per second, making it a low hazard potential structure with a condition assessment of "Not Rated".
Despite not being regulated by the state or federal agencies, Nab Drennen Dam Number 2 serves as a vital resource for water-based activities in the area. Its location 2 miles south of Grave City offers a serene environment for outdoor enthusiasts to enjoy fishing, boating, and other recreational activities. The dam's presence also contributes to the conservation of the local ecosystem, providing a habitat for various species of wildlife along the river.
For water resource and climate enthusiasts, the Nab Drennen Dam Number 2 symbolizes the intersection of human ingenuity and environmental preservation. As a privately owned structure, it showcases the importance of responsible water management and the role of dams in enhancing recreational opportunities while supporting the natural balance of the surrounding ecosystem. Its history and design serve as a reminder of the delicate balance between development and conservation in maintaining sustainable water resources for future generations.
Year Completed |
1955 |
Dam Length |
400 |
River Or Stream |
TR-TOMBIGBEE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
21 |
Nid Storage |
50 |
Structural Height |
23 |
Hazard Potential |
Low |
Nid Height |
23 |
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.
Nab Drennen Dam Number 2