Structure 160 Reservoir Report

Last Updated: December 5, 2025

Structure 160, also known as Blue Cypress Structure, is a concrete dam located in the Hillsborough County, Florida, specifically in the PALM RIVER-TAMPA area.


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Summary

Built in 1968, this dam primarily serves the purpose of flood risk reduction along CANAL 135 PALM RIVER. Standing at a height of 62 feet with a dam length of 365 feet, Structure 160 has a storage capacity of 2580 acre-feet and a maximum discharge rate of 26700 cubic feet per second.

Owned and regulated by the State of Florida, specifically by the Southwest Florida Water Management District (SWFWMD), Structure 160 has a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment. Despite its last inspection dating back to 1999, the dam is maintained and regularly inspected by the state regulatory agency. While no Emergency Action Plan (EAP) has been prepared for this structure, its risk assessment and management measures remain unspecified. With its strategic location and critical role in flood risk reduction, Structure 160 stands as a vital water resource infrastructure in the region.

Year Completed

1968

Dam Length

365

Dam Height

24.8

River Or Stream

CANAL 135 PALM RIVER

Primary Dam Type

Concrete

Surface Area

42

Hydraulic Height

27.2

Drainage Area

33

Nid Storage

2580

Structural Height

62

Hazard Potential

Low

Nid Height

62
       
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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.