Moss Dam Reservoir Report

Last Updated: December 5, 2025

Moss Dam, also known as New Moss Dam, is a private irrigation structure located in Betts, Florida, along the Econfina River.


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Summary

Completed in 1978, this earth dam stands at a height of 35 feet and has a length of 1560 feet, providing a storage capacity of 466 acre-feet for irrigation purposes. The dam is regulated by the state and undergoes regular inspections to ensure its safety and functionality.

Despite its low hazard potential, Moss Dam plays a crucial role in water resource management in Jackson County, Florida. With a normal storage capacity of 413 acre-feet and a maximum discharge of 339 cubic feet per second, the dam helps regulate water flow and support agricultural activities in the region. The surrounding area covers 13 acres, providing a significant water resource for local farmers and landowners.

Although the dam's condition assessment is currently listed as "Not Rated," its maintenance and operation are closely monitored to prevent any potential risks. While Moss Dam may not be a prominent landmark, its significance lies in its contribution to sustaining water resources and supporting irrigation in the area. As climate change continues to impact water availability, structures like Moss Dam play a vital role in ensuring a reliable water supply for agricultural activities in Florida.

Year Completed

1978

Dam Length

1560

Dam Height

35

River Or Stream

TR-ECONFINA RIVER

Primary Dam Type

Earth

Surface Area

13

Hydraulic Height

35

Nid Storage

466

Structural Height

31

Hazard Potential

Low

Nid Height

35
       
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.