Summary
Lucie, Florida, the G78 Control Structure, also known as the C-23 Plug Structure, is a vital component in flood risk reduction efforts along the C-23 Canal. Owned and regulated by the state of Florida, this earth dam structure stands at a height of 23 feet and has a hydraulic height of 16 feet, with a structural height of 26 feet. Completed in 1958, it serves the primary purpose of flood risk reduction and has a storage capacity of 380 acre-feet.
With a high hazard potential and a very high risk assessment rating, the G78 Control Structure plays a crucial role in managing water resources and climate challenges in the region. Equipped with vertical lift outlet gates and a controlled spillway, the structure ensures effective water flow management during periods of high discharge. While the condition assessment is currently labeled as "Not Rated," the structure undergoes state inspections and enforcement to maintain its integrity and functionality.
As a key element in the flood risk reduction infrastructure of the area, the G78 Control Structure is closely monitored and regulated by the Florida Department of Environmental Protection. Its strategic location and design make it a critical asset in mitigating the impact of extreme weather events and ensuring the safety of residents in Port St. Lucie and surrounding areas. The structure's significance in water resource management and climate resilience efforts underscores the importance of ongoing maintenance and risk management measures to safeguard the community from potential flooding risks.
Year Completed |
1958 |
Dam Length |
100 |
Dam Height |
23 |
River Or Stream |
C-23 CANAL |
Primary Dam Type |
Earth |
Surface Area |
30 |
Hydraulic Height |
16 |
Drainage Area |
30 |
Nid Storage |
380 |
Structural Height |
26 |
Outlet Gates |
Vertical Lift |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
26 |
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.
G78 Control Structure
Northeast Causeway Boulevard Jensen Beach