Borden Holding Pond No 2 Reservoir Report

Last Updated: December 5, 2025

Borden Holding Pond No 2, located in Hillsborough, Florida, serves as a private water storage facility primarily used for tailings management.


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Summary

Completed in 1960, this earth dam stands at a height of 13 feet and has a length of 300 feet, providing a storage capacity of 51 acre-feet. The dam, situated along Howell Branch, falls under state jurisdiction with permitting, inspection, and enforcement responsibilities overseen by Florida regulatory agencies.

With a significant hazard potential and a very high risk rating, Borden Holding Pond No 2 is classified as a controlled spillway structure. While the condition assessment is currently not rated, the dam's risk management measures and emergency action plans are not specified in the available data. Given the critical role of water resources and the increasing concerns surrounding climate change impacts, ensuring the safety and maintenance of infrastructure like Borden Holding Pond No 2 is crucial for sustainable water management and the protection of surrounding communities and ecosystems.

Year Completed

1960

Dam Length

300

Dam Height

13

River Or Stream

HOWELL BRANCH

Primary Dam Type

Earth

Surface Area

4

Hydraulic Height

13

Nid Storage

51

Structural Height

7

Hazard Potential

Significant

Nid Height

13
       
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.