Gibsonton (Sw1) Reservoir Report

Last Updated: December 5, 2025

Gibsonton (Sw1) is a privately owned dam located in Hillsborough, Florida, along the Archie Creek.


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Summary

This earth dam stands at a height of 100 feet and has a hydraulic height of 95 feet, offering a significant storage capacity of 384 acre-feet. With a spillway width of 64 feet and a controlled spillway type, the dam is well-equipped to handle maximum discharges of up to 110 cubic feet per second, ensuring effective water management in the area.

The dam's primary purpose is for tailings storage, serving as a crucial infrastructure for water resource management in the region. With a hazard potential rated as significant and a risk assessment indicating a very high risk level, Gibsonton (Sw1) underscores the importance of robust infrastructure and proactive risk management measures. Although the dam's condition is currently not rated, its strategic location and design make it a key player in mitigating climate-related challenges and ensuring water security for the community.

Despite not being under the jurisdiction of federal agencies, Gibsonton (Sw1) is regulated by the state of Florida, with permitting, inspection, and enforcement processes in place. The dam's location, design, and functionality make it a critical asset for water resource and climate enthusiasts, highlighting the intersection between infrastructure, environmental stewardship, and community resilience.

Dam Length

3960

Dam Height

100

River Or Stream

ARCHIE CREEK

Primary Dam Type

Earth

Surface Area

19

Hydraulic Height

95

Drainage Area

0.03

Nid Storage

384

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.