Mcarthur 1&2 Wsp Reservoir Report

Last Updated: December 5, 2025

Mcarthur 1&2 Wsp, located in Okeechobee, Florida, is a private water storage facility designed by the USDA NRCS and regulated by the Florida Department of Environmental Protection.


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Summary

Completed in 1991, this Earth-type dam stands at a height of 7 feet and has a length of 18,000 feet, with a storage capacity of 1,988 acre-feet. Its primary purpose is listed as "Other," with a low hazard potential and a moderate risk assessment rating.

Despite being a relatively small structure with a surface area of 284 acres, Mcarthur 1&2 Wsp plays a crucial role in water resource management in the region. It is equipped with an uncontrolled spillway and other controlled outlet gates, ensuring proper water release and flood control. The dam has not been rated for its current condition, but its last inspection date in 1994 indicates a need for updated assessments to ensure its continued functionality and safety.

With its proximity to the Jacksonville District and oversight by the FDEP, Mcarthur 1&2 Wsp represents a vital component of the local water infrastructure. As climate change continues to impact water resources, this dam serves as a key asset in mitigating flood risks and ensuring water security for the surrounding area. Efforts to assess and maintain the dam's condition will be crucial in safeguarding its long-term effectiveness in water management and environmental protection.

Year Completed

1991

Dam Length

18000

Dam Height

7

River Or Stream

NONE

Primary Dam Type

Earth

Surface Area

284

Drainage Area

0.46

Nid Storage

1988

Outlet Gates

Other Controlled

Hazard Potential

Low

Foundations

Soil

Nid Height

7
       
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.