Here’s a historic view of freshwater flows …
into the Caloosahatchee Estuary through the S-79
Too much water and the brackish balance becomes too dilute (and also susceptible to harmful algal blooms). Too little water causes saltwater intrusion to creep in. Last year sustained a three-month span when freshwater releases were too high, making it the worst year for the estuary since 2005. This year flows have been largely in check due to cooperative Lake O levels and normal wet season rainfall levels in the east Caloosahatchee Basin.
Discharges through the S-79 comes from those two sources.
See map above.