Shannon Lake Dam Reservoir Report
Last Updated: December 5, 2025
Shannon Lake Dam, located in the River Ridge Community of Monroe, Alabama, was completed in 1969 and serves as a recreational spot for water resource and climate enthusiasts.
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Summary
The dam, primarily constructed for recreational purposes, is an earth-type structure with a hydraulic height of 21 feet and a structural height of 23 feet. With a storage capacity of 59 acre-feet, the dam sits on TR-Big Flat Creek and has a maximum discharge of 864 cubic feet per second.
Despite being privately owned and not regulated by the state, Shannon Lake Dam is considered to have a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. The dam has not undergone recent inspections, and its emergency action plan (EAP) readiness is unclear. While the dam does not fall under the jurisdiction of the US Army Corps of Engineers, it still provides a valuable recreational resource for the local community. For water resource and climate enthusiasts, Shannon Lake Dam offers a peaceful retreat surrounded by natural beauty.
Year Completed |
1969 |
Dam Length |
360 |
River Or Stream |
TR-BIG FLAT CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
21 |
Nid Storage |
59 |
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.
Shannon Lake Dam