Thorval Reservoir Report
Nearby: Thorton No 5 Thorton No 6
Last Updated: December 5, 2025
Thorval is a private earth dam located in Etowah, Alabama, along the TR Coosa River.
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Summary
Built in 1958, it serves multiple purposes including fire protection, stock, small fish pond, and recreation. With a hydraulic height of 9 feet and a length of 75 feet, Thorval has a storage capacity of 112 acre-feet, with a normal storage level of 35 acre-feet. Despite its low hazard potential, the dam's condition assessment is currently not rated and it has not undergone any recent inspections.
Thorval's location in Congressional District 04, Alabama, makes it a significant part of the state's water resource infrastructure. Managed by a private owner, the dam does not fall under state jurisdiction or regulation. Its proximity to Sonoma and the Mobile District of the US Army Corps of Engineers underscores its importance for fire protection and recreational activities in the area. With a maximum discharge capacity of 77 cubic feet per second, Thorval plays a crucial role in managing water flow along the Coosa River.
While Thorval's risk assessment and emergency preparedness details are currently unspecified, its presence as a key structure for water management in Alabama highlights the importance of monitoring and maintaining such infrastructure. As a focal point for fire protection and recreational activities, Thorval serves as a reminder of the intersection between water resource management and climate resilience in the region. With its historical significance and practical utility, Thorval stands as a testament to the enduring importance of water infrastructure for communities and ecosystems alike.
Year Completed |
1958 |
Dam Length |
75 |
River Or Stream |
TR COOSA RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
9 |
Nid Storage |
112 |
Structural Height |
9 |
Hazard Potential |
Low |
Nid Height |
9 |
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.
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