St. Lucie Lock And Dam Reservoir Report

Last Updated: December 12, 2025

The St.


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Summary

Lucie Lock and Dam in Florida, owned and operated by the US Army Corps of Engineers, serves multiple purposes including flood risk reduction, irrigation, navigation, and recreation along the St. Lucie Canal. Completed in 1950, this multi-arch dam stands at a structural height of 39 feet and has a hydraulic height of 33 feet. It has a storage capacity of 2,311 acre-feet and can discharge up to 25,600 cubic feet per second through its controlled spillway.

Despite its significant hazard potential, the dam is regularly inspected and monitored by the US Army Corps of Engineers to manage flood risks effectively. The Corps actively engages with local emergency managers and the public to raise awareness and preparedness for any dam-related emergencies. Risk management measures include prioritizing maintenance activities, updating emergency action plans, and ensuring the structural integrity of the dam to mitigate potential risks associated with extreme weather events and water levels.

Year Completed

1950

Dam Length

540

River Or Stream

ST LUCIE CANAL

Length Of Locks

250

Hydraulic Height

33

Drainage Area

202

Nid Storage

2311

Structural Height

39

Outlet Gates

Tainter (radial) - 0

Hazard Potential

Significant

Foundations

Soil

Nid Height

39
       
Seasonal Comparison

Weather Forecast

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.