Mosaic Csa F2b Reservoir Report
Nearby: Mosaic Csa F2c Mosaic Csa Fc2c
Last Updated: December 5, 2025
Mosaic Csa F2b is a private-owned dam located in Fort Lonesome, Florida, along Alderman Creek.
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Summary
The dam, designed by ARDAMAN & ASSOCIATES, serves the primary purpose of containing tailings and is regulated by the Florida Department of Environmental Protection. Completed in 1993, the earth-type dam stands at 55 feet tall with a structural height of 57 feet, and has a storage capacity of 34,500 acre-feet over a surface area of 650 acres.
With a spillway width of 128 feet and a maximum discharge of 640 cubic feet per second, Mosaic Csa F2b poses a significant hazard potential. It has a moderate risk assessment rating and is subject to inspections by the Mine Safety and Health Administration. The dam's condition assessment is currently not rated, with the last inspection conducted in July 2005. While the emergency action plan status and risk management measures are not specified, Mosaic Csa F2b remains a critical structure for water resource and climate enthusiasts to monitor in the ever-changing landscape of environmental conservation.
Year Completed |
1993 |
Dam Length |
14500 |
Dam Height |
55 |
River Or Stream |
ALDERMAN CREEK |
Primary Dam Type |
Earth |
Surface Area |
650 |
Hydraulic Height |
50 |
Drainage Area |
1.02 |
Nid Storage |
34500 |
Structural Height |
57 |
Hazard Potential |
Significant |
Nid Height |
57 |
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.
Mosaic Csa F2b