Gibsonton (Nw) Reservoir Report

Last Updated: December 5, 2025

Located in Hillsborough, Florida, Gibsonton (Nw) is a private dam with a significant hazard potential that serves primarily for tailings storage.


°F

°F

mph

Wind

%

Humidity

Summary

The dam, constructed with earth materials, stands at a height of 10.5 feet and has a structural height of 15.5 feet. With a storage capacity of 1217 acre-feet and a drainage area of 0.37 square miles, the dam poses a high risk, as indicated by its Hazard Potential rating of "Significant" and Risk Assessment of "High (2)".

Situated along Archie Creek, Gibsonton (Nw) lacks a spillway and any associated locks. Despite being state-regulated and permitted, the dam's condition assessment is currently "Not Rated", and it has not undergone a recent inspection. In the event of an emergency, the dam does not have an Emergency Action Plan (EAP) in place, raising concerns about the preparedness for potential risks and disasters. With its location in a high-risk area and without a recent risk assessment, the safety and management of Gibsonton (Nw) remain critical considerations for water resource and climate enthusiasts.

Given its vital role in tailings storage and the potential risks associated with its high hazard rating, Gibsonton (Nw) serves as a focal point for monitoring and ensuring effective risk management in the region. With its proximity to residential areas and limited safety measures in place, the dam's stakeholders and regulatory agencies must prioritize conducting regular inspections, implementing an updated Emergency Action Plan, and enhancing risk assessment protocols to safeguard the surrounding community and mitigate potential environmental impacts. As water resource and climate enthusiasts, it is crucial to advocate for proactive measures to enhance the safety and resilience of dams like Gibsonton (Nw) in the face of evolving climate challenges and increasing water resource demands.

Dam Length

12975

Dam Height

10.5

River Or Stream

ARCHIE CREEK

Primary Dam Type

Earth

Surface Area

238

Hydraulic Height

7

Drainage Area

0.37

Nid Storage

1217

Structural Height

15.5

Hazard Potential

Significant

Nid Height

16
       
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.