Ketter Causeway Dam Reservoir Report

Last Updated: December 5, 2025

Ketter Causeway Dam, located in Putnam County, Florida, is a vital structure along the St.


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Summary

Johns River. Built in 1968, this earth dam serves primarily for recreational purposes, offering a picturesque spot for water and climate enthusiasts to appreciate the surrounding natural beauty. With a height of 27 feet and a length of 325 feet, the dam provides a storage capacity of 168 acre-feet, making it a significant asset for water resource management in the area.

Despite its age, Ketter Causeway Dam has been well-maintained, with a satisfactory condition assessment as of August 2014. The dam's hazard potential is classified as high, emphasizing the importance of regular inspections and risk management measures to ensure the safety of nearby communities. In the event of an emergency, the dam's emergency action plan (EAP) status is not specified, highlighting the need for continued preparedness and adherence to safety guidelines to mitigate potential risks.

With its location in the scenic Saratoga Harbor Estates, Ketter Causeway Dam provides not only recreational opportunities but also serves as a critical infrastructure for water storage and management in the region. As climate change continues to impact water resources, ensuring the resilience and safety of dams like Ketter Causeway is essential for safeguarding communities and ecosystems along the St. Johns River.

Year Completed

1968

Dam Length

325

Dam Height

27

River Or Stream

TR-ST. JOHNS RIVER

Primary Dam Type

Earth

Surface Area

6

Length Of Locks

600

Hydraulic Height

27

Nid Storage

168

Structural Height

25

Hazard Potential

High

Nid Height

27
       
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.