Allison Derby Reservoir Report
Nearby: Hibbard #1 Chris Hawley
Last Updated: December 29, 2025
Allison Derby, located in Sumter, Alabama, along the TR-COTOHAGA CREEK, is a privately owned dam primarily used for recreation.
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Summary
Built in 1961, this earth dam stands at a height of 15 feet and spans a length of 600 feet, providing a storage capacity of 78 acre-feet. With a low hazard potential and a current condition assessment of "Not Rated," Allison Derby offers a serene setting for outdoor activities in the Whitfield area.
Managed by the Mobile District of the US Army Corps of Engineers, Allison Derby has not been rated for its emergency action plan or risk assessment as of the latest update in 2015. Despite its modest size and recreational purpose, this dam plays a crucial role in regulating the flow of TR-COTOHAGA CREEK and providing a haven for wildlife and local residents alike. With no associated structures and minimal federal oversight, Allison Derby remains a hidden gem in Alabama's water resource landscape.
As climate change continues to impact water resources across the country, the importance of maintaining dams like Allison Derby for both recreational and ecological purposes cannot be understated. With its peaceful surroundings and low-risk profile, this quaint earth dam serves as a reminder of the balance between human enjoyment and environmental stewardship in our changing world.
Hydraulic Height |
15 |
Year Completed |
1961 |
Structural Height |
15 |
Nid Storage |
78 |
River Or Stream |
TR-COTOHAGA CREEK |
Dam Length |
600 |
Hazard Potential |
Low |
Primary Dam Type |
Earth |
Nid Height |
15 |
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.
Allison Derby