Mcarthur 4 Wsp Reservoir Report

Last Updated: December 5, 2025

Mcarthur 4 Wsp is a private water storage facility located in Okeechobee, Florida, designed by USDA NRCS and completed in 1991.


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Summary

This earth dam structure serves multiple purposes, with a primary focus on water resource management. With a dam height of 8 feet and a storage capacity of 455 acre-feet, the facility plays a critical role in regulating water flow and providing irrigation support for the surrounding area.

Owned and regulated by the state of Florida, Mcarthur 4 Wsp is subject to regular inspections and enforcement measures to ensure its structural integrity and operational efficiency. Despite being classified as a low hazard potential structure, the facility's risk assessment indicates a moderate level of risk, highlighting the importance of ongoing monitoring and management. With a drainage area of 0.07 square miles and a spillway type of uncontrolled, the facility is equipped to handle a maximum discharge of 36 cubic feet per second.

Overall, Mcarthur 4 Wsp stands as a vital component of the water infrastructure in Okeechobee County, contributing to water conservation efforts and supporting sustainable agriculture practices in the region. As water resource and climate enthusiasts, the facility's design, purpose, and operational details offer valuable insights into the intersection of engineering, policy, and environmental stewardship in managing water resources for the benefit of local communities and ecosystems.

Year Completed

1991

Dam Length

10866

Dam Height

8

River Or Stream

NONE

Primary Dam Type

Earth

Surface Area

57

Drainage Area

0.07

Nid Storage

455

Outlet Gates

Other Controlled

Hazard Potential

Low

Foundations

Soil

Nid Height

8
       
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.