G93 Control Structure dam
G93 Control Structure
The G93 Control Structure, also known as the Coral Gables Control Structure, is a critical flood risk reduction infrastructure located in Miami-Dade, Florida. Owned by the state, this concrete dam stands at a height of 10 feet and has a hydraulic height of 8 feet, serving the primary purpose of flood risk reduction along the C-3 Canal. Completed in 1953 by the USACE, this structure has a normal storage capacity of 200 acre-feet and a maximum discharge of 640 cubic feet per second, with a controlled spillway width of 20 feet.
With a high hazard potential and a satisfactory condition assessment, the G93 Control Structure plays a vital role in managing flood risks in the area. The structure is regulated, inspected, and enforced by the Florida Department of Environmental Protection (FDEP), ensuring its functionality and safety. Despite its age, the G93 Control Structure continues to effectively mitigate flood risks in the region, showcasing the importance of well-maintained water resource infrastructure in addressing climate-related challenges. For water resource and climate enthusiasts, the G93 Control Structure serves as a noteworthy example of how strategic infrastructure design and management can help safeguard communities from the impacts of extreme weather events.
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 G93 Control Structure -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Tamiami Canal Near Coral Gables | 197 cfs | → |
| Miami Canal At Nw36 St | 24 cfs | → |
| Levee 31 North Extension At 3 Mile Nr West Miami F | 56 cfs | → |
| Levee 31 North Extension At 1 Mile Nr West Miami | 107 cfs | → |
| Levee 31 North Extension At 4 Mile Nr West Miami F | 87 cfs | → |
| Levee 31 North Extension At 5 Mile Nr West Miami F | 254 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near G93 Control Structure.
Boat launches
- North Snapper Creek Drive 9746-9788, Miami
- Southwest Guadalajara Street Coral Gables
- Falls Boat Launch
- Crandon Park Marina
- Morningside Park
- Legion Park
Campgrounds
- Larry And Penny Thompson Park
- Boca Chita Key Campground
- Cb Smith Park
- Elliott Key Campground
- Topeekeegee Yugnee County Park
- Markham Park
Track G93 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 G93 Control Structure
Where does the data for G93 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.