Sunnyhill Restoration Area Culvert Reservoir Report

Last Updated: December 5, 2025

The Sunnyhill Restoration Area Culvert in Marion, Florida, plays a crucial role in flood risk reduction for the Ocklawaha Tributary.


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Summary

This State-owned culvert is regulated by the St. Johns River Water Management District and is subject to state permitting, inspection, and enforcement. With a low hazard potential and fair condition assessment, this earth dam stands at 14 feet high and spans 140 feet in length, providing flood risk reduction, recreation, and water supply benefits to the surrounding area.

Located in the city of Belleview, the Sunnyhill Restoration Area Culvert is situated in a picturesque setting with a surface area of 170 acres and a drainage area of 17.93 square miles. The controlled spillway with a width of 6 feet ensures proper water flow management, and the slide outlet gates contribute to the effective operation of the structure. Despite being assigned a very high risk assessment rating, measures are in place to manage potential risks associated with this vital water resource infrastructure.

While the culvert has not been modified in recent years and lacks certain emergency preparedness features, its presence is essential for maintaining water levels and controlling floods in the area. As a focal point for water resource and climate enthusiasts, the Sunnyhill Restoration Area Culvert serves as a reminder of the importance of sustainable water management practices and the need to protect our natural ecosystems for future generations.

Dam Length

140

Dam Height

14

River Or Stream

OCKLAWAHA TRIBUTARY

Primary Dam Type

Earth

Surface Area

170

Hydraulic Height

11

Drainage Area

17.93

Nid Storage

1653

Outlet Gates

Slide (sluice gate)

Hazard Potential

Low

Foundations

Rock, Soil

Nid Height

14
       
Seasonal Comparison

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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.