Mulberry N Reservoir Report

Last Updated: December 6, 2025

Mulberry N is a privately owned dam located in Polk, Florida, along the North Prong Alafia River.


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Summary

With a dam height of 100 feet and a storage capacity of 2432 acre-feet, this earthen structure serves primarily for tailings management. Despite being classified as a significant hazard potential dam with a very high risk rating, its condition assessment remains unrated, and emergency action preparedness information is lacking. The dam features a controlled spillway with a width of 64 feet and a maximum discharge capacity of 110 cubic feet per second.

The Mulberry N dam poses a critical water resource and climate concern in the region due to its high-risk classification and lack of condition assessment. Given its location in a state with regulated permitting, inspection, and enforcement processes, stakeholders must prioritize the evaluation and maintenance of this structure to ensure public safety and environmental protection. As a vital component of the local watershed, the dam's role in managing tailings underscores the need for sustainable water resource management practices in the face of changing climatic conditions.

As water resource and climate enthusiasts, it is imperative to monitor the Mulberry N dam closely and advocate for comprehensive risk assessment, emergency action planning, and maintenance protocols. With a significant hazard potential and a very high risk rating, this dam demands attention to safeguard the surrounding community and ecosystem. By engaging with relevant regulatory agencies and promoting proactive measures to enhance dam safety and resilience, we can contribute to the sustainable management of water resources and adaptation to climate variability in the region.

Dam Length

9874

Dam Height

100

River Or Stream

NORTH PRONG ALAFIA RIVER

Primary Dam Type

Earth

Surface Area

122

Hydraulic Height

95

Drainage Area

121.6

Nid Storage

2432

Structural Height

105

Hazard Potential

Significant

Nid Height

105
       
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.