G79 Control Structure Reservoir Report
Nearby: Control Struc #3 G-81
Last Updated: December 16, 2025
The G79 Control Structure, also known as the Carlton Road Control Structure, is a state-owned water management infrastructure located in St.
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Summary
Lucie, Florida. Completed in 1958, this structure plays a crucial role in flood risk reduction along the C-24 Canal. With a dam height of 20 feet and a hydraulic height of 17 feet, the G79 Control Structure has a capacity to store up to 400 acre-feet of water and a surface area of 30 acres.
Managed by the South Florida Water Management District (SFWMD), the G79 Control Structure is designed to handle maximum discharges of up to 50 cubic feet per second through its controlled spillway. Despite being classified as having a high hazard potential, its condition assessment remains unrated. The structure is equipped with slide gates for water control and operates under the oversight of the Florida Department of Environmental Protection (FDEP). With a very high risk ranking, this structure is vital in the protection of surrounding communities from potential flooding events.
The G79 Control Structure operates in a highly regulated manner, with state permitting, inspection, and enforcement procedures in place to ensure its proper functioning. Located within the jurisdiction of the state of Florida, this infrastructure aligns with the primary purpose of flood risk reduction. As a key element in the water resource management system of the region, the G79 Control Structure stands as a critical asset in safeguarding against the impacts of climate change on water resources in the area.
Year Completed |
1958 |
Dam Length |
100 |
Dam Height |
20 |
River Or Stream |
C-24 CANAL |
Primary Dam Type |
Earth |
Surface Area |
30 |
Hydraulic Height |
17 |
Drainage Area |
50 |
Nid Storage |
400 |
Structural Height |
23 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
G79 Control Structure