Issue:
Lake Okeechobee Discharges
Harmful Discharges
Lake Okeechobee is often referred to as the “liquid heart” of Florida. Unfortunately, over the years, the Lake has become heavily polluted by run-off from agriculture and development in Central & South Florida.
As it was designed in 1947 to avoid flooding south of the lake, the Caloosahatchee and St. Lucie rivers are the two “safety valves” of the system during high water events. Water from Lake Okeechobee is now routinely discharged to these rivers and sent to tide in the Gulf of Mexico and Atlantic Ocean. This practice is also starving Florida Bay of the freshwater it naturally received through the historic Everglades.
In the wet season, massive amounts of nutrient polluted water is now being sent to the Caloosahatchee River. This nutrient rich water is exacerbating harmful algal blooms of increasing scope and frequency.
The federal Army Corps of Engineers is responsible for the Lake’s operation. The Corps’ operational manuals consider public safety and many other objectives set forth by the state’s South Florida Water Management District.
Minimum Flows & Levels
To complicate matters for the Caloosahatchee, our brackish water estuary thrives with a certain amount of freshwater sustaining Vallisneria tape grass near Fort Myers. When dry season rainfall is not enough to suppress salinity levels, tape grass die-offs occur.
As a result of these two seasonal swings, and water mismanagement by government agencies, the Caloosahatchee often suffers from too much freshwater in the wet season, and not enough freshwater in the dry season.
Useful Links
Lake Okeechobee Status
There are a number of tools we use to gather information about the current status of harmful algal blooms on the Lake, as well as the flows being overseen by water managers. Here are a few of the best:
Related News Stories
Lake Okeechobee
Researchers develop tools to test for airborne blue-green algae toxins in Southwest Florida
The data shows that while very few large-scale cyanobacterial bloom events were observed at sampling locations across Southwest Florida, cyanobacterial and algal toxins were present in low concentrations in the majority of samples.
ADAM device in Lee County gives researchers a repeatable way to track algae bloom exposures
A new device called ADAM (Airborne Detection for Algae Monitoring) is helping researchers measure airborne toxins released by algae blooms, with promising results from initial tests along the Caloosahatchee River.
Florida bloom toxins turn up in air, suggesting inhalation risk beyond shorelines
Now partnering with the nonprofit Calusa Waterkeeper in Fort Myers, Florida, the Wyoming scientists announced that they have identified airborne cyanobacterial toxins collected in special detectors placed in different locations in Southwest Florida.
Troubled Waters
With this much nutrient pollution continuing to enter our waters statewide, it should be no surprise that blooms are occurring despite the (dry) season.
Lake O ‘dirtiest’ U.S. lake? Well, there may be more to it than that
Water experts in Florida agree, as well as take exception, to a new report that says Lake Okeechobee is the dirtiest lake in the United States.
What are all the discharges about? The latest on Lake O
The federal agency charged with managing Lake Okeechobee levels is considering larger scale water releases to the Caloosahatchee River in hopes of helping thousands of acres of lost submerged grasses recover.
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Priority Issues
Harmful Algal Blooms
Cyanobacteria & Red Tide
Cyanobacteria (blue-green algae) and Karenia brevis (red tide) have been making major impacts on Southwest Florida.
Lake Okeechobee Discharges
Revise System Operating Manual
The Caloosahatchee River often suffers from too much freshwater in the wet season, and not enough freshwater in the dry season.
Cape Coral Spreader Canals
Nutrient & Sediment Loading
The City of Cape Coral is working to remove large storm-water barriers to make recreational boating more convenient.
Bacteria Monitoring
Fecal Indicator Bacteria
Calusa Waterkeeper has been at the forefront of monitoring this Fort Myers tributary for fecal bacteria indicators.