Lyons Lake Dam Reservoir Report
Nearby: Westbrook Lake Dam Mcclure Lake Dam
Last Updated: December 5, 2025
Lyons Lake Dam, also known as Grimes Dam, is a private earth dam located in Madison, Georgia.
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Summary
Built by the Soil Conservation Service (SCS) in 1974, the dam stands at a height of 31 feet with a hydraulic height of 27 feet. The primary purpose of the dam is for recreation, providing a storage capacity of 103 acre-feet and a surface area of 7 acres.
With a low hazard potential and a moderate risk assessment rating, Lyons Lake Dam has not been rated for its condition assessment. The dam features uncontrolled spillways and outlets gates, with a last inspection date in April 2016. While the dam is not state regulated, it is under state jurisdiction and is subject to periodic inspections.
Despite its age, Lyons Lake Dam continues to serve as a recreational spot in the Bond Environs area. Water resource and climate enthusiasts interested in the dam can appreciate its historical significance, design characteristics, and the potential for outdoor activities around the lake.
Year Completed |
1974 |
Dam Length |
258 |
Dam Height |
31 |
River Or Stream |
UNKNOWN |
Primary Dam Type |
Earth |
Surface Area |
7 |
Hydraulic Height |
27 |
Nid Storage |
103 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
31 |
Seasonal Comparison
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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.
Lyons Lake Dam