Mulberry (1) Reservoir Report

Nearby: Pol50 Pol51

Last Updated: December 5, 2025

Mulberry (1) is a private dam located in Polk, Florida, along the North Prong Alafia River.


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Summary

This earth dam stands at 105 feet high and spans 5966 feet in length, with a storage capacity of 1152 acre-feet. The dam serves primarily for tailings storage and has a controlled spillway with a width of 64 feet.

The dam is regulated by the state of Florida and undergoes regular inspections, with a significant hazard potential due to its location and design. Despite being in a very high-risk category, the dam's condition is currently not rated, and no emergency action plan (EAP) or risk management measures are in place. With a maximum discharge of 110 cubic feet per second, Mulberry (1) poses a considerable risk to the surrounding area in the event of a failure.

Water resource and climate enthusiasts interested in Mulberry (1) should take note of its location, purpose, and risk level. As one of the many dams in Florida under state jurisdiction, Mulberry (1) serves as a crucial piece of infrastructure along the Alafia River. Monitoring its condition and ensuring proper risk assessment and management are essential in safeguarding the local community and environmental resources from the potential impacts of a dam failure.

Dam Length

5966

Dam Height

100

River Or Stream

NORTH PRONG ALAFIA RIVER

Primary Dam Type

Earth

Surface Area

58

Hydraulic Height

95

Drainage Area

0.09

Nid Storage

1152

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.