Mosaic Csa Fc2c Reservoir Report
Nearby: Mosaic Csa F2c Mosaic Csa F2b
Last Updated: December 5, 2025
Mosaic Csa Fc2c is a privately owned tailings dam located in Fort Lonesome, Florida, along Alderman Creek.
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Summary
Constructed in 1993 by Ardurman & Associates, this earth dam stands at a height of 55 feet and has a hydraulic height of 50 feet, with a storage capacity of 35,500 acre-feet. The dam serves the primary purpose of storing tailings and is regulated by the Florida Department of Environmental Protection.
With a significant hazard potential and a very high risk assessment rating, Mosaic Csa Fc2c is subject to regular inspections, state jurisdiction, permitting, and enforcement. The dam has a controlled spillway with a width of 128 feet and a maximum discharge of 640 cubic feet per second. Although the condition assessment is currently not rated, the dam's structural height of 57 feet and length of 14,437 feet make it a crucial component of water resource management in the region.
As part of the water infrastructure in Hillsborough County, Florida, Mosaic Csa Fc2c plays a vital role in flood control and water supply management. While the dam has not been modified in recent years, its location, design, and purpose highlight the importance of sustainable water resource practices in the face of climate change and increasing water demand in the region.
Year Completed |
1993 |
Dam Length |
14437 |
Dam Height |
55 |
River Or Stream |
ALDERMAN CREEK |
Primary Dam Type |
Earth |
Surface Area |
650 |
Hydraulic Height |
50 |
Drainage Area |
1.02 |
Nid Storage |
35500 |
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 Fc2c