Lyles Reservoir Report
Nearby: H. Neely Henry Nunally
Last Updated: December 5, 2025
Lyles is a private recreational dam located in Calhoun, Alabama, along the Coosa River.
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Summary
Built in 1948, this Earth-type dam stands at a structural height of 33 feet and has a hydraulic height of 29 feet. With a storage capacity of 250 acre-feet, Lyles offers a serene environment for water resource and climate enthusiasts to enjoy various recreational activities.
Managed by the Mobile District of the US Army Corps of Engineers, Lyles is a significant water structure with a hazard potential rating of "Significant." While the dam's condition assessment is currently "Not Rated," it serves as a crucial recreational spot in the area. Despite lacking state regulation, permitting, and inspection, Lyles continues to provide a safe and enjoyable space for visitors to appreciate the beauty of the Coosa River and its surroundings.
With a primary purpose of recreation, Lyles offers a 400-foot dam length and a maximum discharge of 390 cubic feet per second. Although lacking in certain regulatory aspects, this private dam remains a popular destination for outdoor enthusiasts seeking a peaceful retreat amidst the natural beauty of Calhoun County, Alabama.
Year Completed |
1948 |
Dam Length |
400 |
River Or Stream |
TR COOSA RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
29 |
Nid Storage |
250 |
Structural Height |
33 |
Hazard Potential |
Significant |
Nid Height |
33 |
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.
Lyles