Mcarthur 4 Frs Reservoir Report
Nearby: Mcarthur 1&2 Wsp
Last Updated: December 5, 2025
Located in Okeechobee, Florida, Mcarthur 4 FRS is a privately owned earth dam constructed in 1991 by the USDA NRCS for flood risk reduction.
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Summary
This dam stands at a height of 7 feet with a length of 9358 feet, providing a storage capacity of 274 acre-feet. The dam serves a crucial purpose in mitigating flood risks in the area, with a low hazard potential and moderate risk assessment.
Managed by the Florida Department of Environmental Protection, Mcarthur 4 FRS is regulated, permitted, inspected, and enforced by state authorities to ensure its safety and functionality. While the dam has not been recently assessed for its condition, it is equipped with controlled outlet gates and an uncontrolled spillway to manage water flow during peak discharge events. The dam's primary designer, the Natural Resources Conservation Service, has implemented measures to reduce the risk associated with the structure.
Despite its low hazard potential, Mcarthur 4 FRS plays a vital role in flood risk reduction for the surrounding area. This earth dam, with its stone core and soil foundation, continues to uphold its purpose of safeguarding the community against potential flooding events. As climate change brings about uncertain weather patterns, the importance of maintaining and monitoring such water resource structures like Mcarthur 4 FRS becomes increasingly crucial in ensuring the resilience of the region's water infrastructure.
Year Completed |
1991 |
Dam Length |
9358 |
Dam Height |
7 |
River Or Stream |
NONE |
Primary Dam Type |
Earth |
Surface Area |
39 |
Drainage Area |
0.44 |
Nid Storage |
274 |
Outlet Gates |
Other Controlled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
7 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Mcarthur 4 Wsp