Piney Point(4) Reservoir Report

Last Updated: December 5, 2025

Piney Point(4) is a private dam located in Manatee, Florida, along the Piney Point Creek.


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Summary

This significant dam stands at a height of 105 feet and has a hydraulic height of 95 feet, with a storage capacity of 1024 acre-feet. The dam serves primarily for tailings purposes and is of the earth dam type, with a controlled spillway that is 64 feet wide.

With a maximum discharge capacity of 110 cubic feet per second, the dam poses a significant hazard potential and is classified as "Very High Risk (1)". Despite being in a high-risk category, the condition assessment of Piney Point(4) is marked as "Not Rated", indicating a lack of recent evaluation. The dam is under state jurisdiction and regulation, with permitting, inspection, and enforcement all conducted by the relevant state agencies.

Located in a sensitive environmental area, Piney Point(4) is a focal point for water resource and climate enthusiasts due to its potential impact on the surrounding ecosystems and communities in the event of a failure. The dam's proximity to residential areas and the potential for a significant discharge make it crucial for ongoing monitoring and maintenance to ensure the safety and integrity of the structure.

Dam Length

7234

Dam Height

100

River Or Stream

PINEY POINT CREEK

Primary Dam Type

Earth

Surface Area

51

Hydraulic Height

95

Drainage Area

0.08

Nid Storage

1024

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.