G-90 dam
G-90
G-90, also known as Jack Creek Structure, is a concrete dam located in Highlands County, Florida, specifically in the city of Leisure Lakes. Built in 1962, this dam serves the primary purpose of flood risk reduction along the Jack Creek river. With a height of 29 feet and a length of 550 feet, G-90 has a storage capacity of 44,676 acre-feet and a surface area of 3,662 acres, providing crucial protection to the surrounding area from potential flooding events.
Managed by the Southwest Florida Water Management District (SWFWMD), G-90 is classified as a state-regulated structure with state permitting, inspection, and enforcement procedures in place to ensure its safety and functionality. The dam has a high hazard potential but was last assessed to be in satisfactory condition in 2014. While it has not undergone recent modifications or upgrades, G-90 remains a vital component of the region's flood control infrastructure, contributing to the overall water resource management efforts in the area.
As a key flood risk reduction asset in the region, G-90 plays a crucial role in safeguarding communities and infrastructure from the impacts of extreme weather events and climate variability. With its strategic location along the Jack Creek river and its significant storage capacity, this concrete dam continues to be a cornerstone of water resource management in Highlands County, Florida. Ongoing monitoring, maintenance, and potential future enhancements will be essential to ensure the long-term effectiveness and resilience of G-90 in the face of changing environmental conditions and increasing demands on water resources.
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 G-90 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Josephine Creek Near De Soto City Fl | 4 cfs | → |
| Fisheating Creek Nr Lake Placid | 0 cfs | → |
| Arbuckle Creek Nr De Soto City | 49 cfs | → |
| Carter Creek Near Sebring Fl | 8 cfs | → |
| C-41 Canal Nr Brighton | 261 cfs | → |
| Charlie Creek Near Crewsville Fl | 0 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near G-90.
Boat launches
- Lake Carrie Boat Ramp
- Lake June Clubhouse Road, Lake Placid
- Lake June Park
- Lakesedge Drive 623, Lake Placid
- Windy Point Boat Ramp
- Boat Launch And Park, Lake Placid
Campgrounds
- Highlands Hammock State Park
- Chandler Slough East Campsite
- Yates Marsh North
- Avon Park Af Range Military
- Yates Marsh South
- Arbuckle - Lake Wales Ridge Sf
Fishing spots
Paddle runs
- County Road 780 Bridge To State Road 72 Bridge
- A Point Approximately 1/2 Mile South Of Sr 771 At El Jobean To The River's Mouth In The Vicinity Of Hog Island
- Begins Downstream Of The State Road 72 Bridge To The Southern Boundary Of Myakka River State Park
More reservoirs
Track G-90 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 G-90
Where does the data for G-90 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 G-90.