Watson Sa No 11 Phase 1 Reservoir Report
Nearby: Es-Tech Sa-12 Es-Tech Sa-13
Last Updated: December 5, 2025
Watson Sa No 11 Phase 1 is a privately-owned earth dam located in Polk, Florida, completed in 1974 for the primary purpose of tailings storage.
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Summary
The dam stands at a height of 37 feet and has a length of 16,450 feet, with a maximum storage capacity of 3,159 acre-feet. Situated on an unnamed pond, it is regulated by the state of Florida and is subject to state permitting, inspection, and enforcement protocols.
Despite its low hazard potential and current "Not Rated" condition assessment, Watson Sa No 11 Phase 1 does not have an Emergency Action Plan (EAP) in place, nor has it undergone a risk assessment or had inundation maps prepared. With a maximum discharge of 18 cubic feet per second, this dam serves a crucial function in water resource management and climate resilience in the area. However, there is room for improvement in terms of emergency preparedness and risk management measures to ensure the safety and security of the surrounding community and the environment.
Year Completed |
1974 |
Dam Length |
16450 |
Dam Height |
37 |
River Or Stream |
UNNAMED POND |
Primary Dam Type |
Earth |
Surface Area |
167 |
Hydraulic Height |
37 |
Nid Storage |
3159 |
Structural Height |
32 |
Hazard Potential |
Low |
Nid Height |
37 |
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.
Watson Sa No 11 Phase 1