Sa 12 S.R. Reservoir Report

Last Updated: December 6, 2025

Sa 12 S.R., also known as Sr12, is a private dam located in Hamilton County, Florida, specifically in the city of White Springs.


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Summary

Built in 1982, this earth dam stretches 17,700 feet along the Suwanne River, with a height of 24 feet and a hydraulic height of 19 feet. The primary purpose of Sa 12 S.R. is for tailings storage, with a maximum storage capacity of 20,000 acre-feet and a normal storage capacity of 15,000 acre-feet.

This dam, designed by ARDAMAN & ASSOCIATES, is regulated by the Florida Department of Environmental Protection (FDEP) and undergoes regular inspection and enforcement to ensure its safety and compliance. Despite being classified as low hazard potential, Sa 12 S.R. is considered to have a very high risk rating (1), highlighting the importance of robust risk management measures. The controlled spillway, with a width of 64 feet, helps to manage a maximum discharge of 220 cubic feet per second, mitigating the risk of flooding and ensuring the safety of the surrounding area.

Enthusiasts interested in water resources and climate will find Sa 12 S.R. an intriguing case study, given its location on the Suwanne River and its role in storing tailings. The dam's structural design, storage capacity, and risk assessment provide valuable insights into the complexities of managing water resources in a changing climate. As efforts to address climate change intensify, understanding the dynamics of dams like Sa 12 S.R. becomes increasingly crucial for ensuring the resilience and sustainability of water infrastructure.

Year Completed

1982

Dam Length

17700

Dam Height

24

River Or Stream

SUWANNE RIVER

Primary Dam Type

Earth

Surface Area

901

Hydraulic Height

19

Drainage Area

901

Nid Storage

20000

Structural Height

29

Hazard Potential

Low

Foundations

Soil

Nid Height

29
       
Seasonal Comparison

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Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.