Feather Sound Structure Reservoir Report

Last Updated: December 5, 2025

Feather Sound Structure, also known as Pin3, is a local government-owned flood risk reduction infrastructure located in Pinellas Park, Florida.


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Summary

The structure is situated on the Feather Sound river and falls under the regulatory oversight of the Florida Department of Environmental Protection. With a dam height of 6 feet and a hydraulic height of 4 feet, this earth-type dam serves multiple purposes including flood risk reduction, recreation, and water supply for the surrounding area.

With a storage capacity of 111 acre-feet, Feather Sound Structure covers a surface area of 21 acres and drains a 0.4 square mile drainage area. The dam features an uncontrolled spillway with a width of 74 feet and is categorized as having a significant hazard potential. Despite being assessed as in fair condition as of March 2016, the structure is subject to moderate risk and lacks updated emergency action plans and risk management measures. As a critical component of water resource management in the region, ongoing inspections and maintenance are essential to ensure the safety and functionality of Feather Sound Structure.

Dam Length

83

Dam Height

6

River Or Stream

FEATHER SOUND

Primary Dam Type

Earth

Surface Area

21

Hydraulic Height

4

Drainage Area

0.4

Nid Storage

111

Outlet Gates

None

Hazard Potential

Significant

Foundations

Rock, Soil

Nid Height

6
       
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.