G79 Control Structure dam
G79 Control Structure
The G79 Control Structure, also known as the Carlton Road Control Structure, is a state-owned water management infrastructure located in St. 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.
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.
- 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.
- 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.
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, environmental 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.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around G79 Control Structure -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mosquito Creek Nr Okeechobee | 0 cfs | → |
| Williamson Ditch Nr Okeechobee | 1 cfs | → |
| Wolff Creek Nr Okeechobee | 0 cfs | → |
| Taylor Creek At Grassy Island Nr Okeechobee | 11 cfs | → |
| Otter Creek Nr Okeechobee | 2 cfs | → |
| S-253 Weir Near Fort Drum | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near G79 Control Structure.
Boat launches
- West Angle Road 9300-10236, Fort Pierce
- Marma, Port Saint Lucie
- Southeast Veterans Memorial Parkway 2200, Port Saint Lucie
- U.S. 441 10654, Okeechobee
- North Causeway Island Park
- Stan Blum Memorial Park
Campgrounds
- Savannas Recreational Park
- Florida Trail Primitive Camping
- St. Lucie Lock
- Phipps County Park
- Okee-Tantie Campground And Marina
- Yates Marsh South
Fishing spots
Track G79 Control Structure in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About G79 Control Structure
Where does the data for G79 Control Structure come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the High hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of G79 Control Structure.