Mulberry (9) Reservoir Report

Nearby: Mulberry (3)

Last Updated: December 5, 2025

Mulberry (9) is a privately owned dam located in Polk, Florida, along the North Prong Alafia River.


°F

°F

mph

Wind

%

Humidity

Summary

With a significant hazard potential and a very high risk assessment rating, this earth dam stands at a height of 100 feet and has a hydraulic height of 95 feet. It serves primarily for tailings storage, with a storage capacity of 512 acre-feet and a normal storage level of 358 acre-feet. The dam has a controlled spillway type with a width of 64 feet and a maximum discharge capacity of 110 cubic feet per second.

Despite being in a state regulated and permitted area, Mulberry (9) has not been rated for its condition assessment, and there is no information available on its last inspection date or emergency preparedness measures. The dam's risk management measures and inundation maps are also not prepared, leaving the surrounding area potentially vulnerable in case of a dam failure. As a water resource and climate enthusiast, understanding the infrastructure and risks associated with dams like Mulberry (9) is crucial for ensuring the safety and sustainability of our water resources in the face of changing climate patterns.

Dam Length

4699

Dam Height

100

River Or Stream

NORTH PRONG ALAFIA RIVER

Primary Dam Type

Earth

Surface Area

26

Hydraulic Height

95

Drainage Area

0.04

Nid Storage

512

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.