This new set of graphs is a valuable way to track the freshwater flows in the Caloosahatchee .
|Can you find the S-79?|
First you need an overview map of the area. The S-79 is the primary point of interest. It’s where freshwater releases are made from the river (often which come from upstream Lake Okeechobee). You may also take note of the spatial distribution of submerged aquatic vegetation (SAV).
|S-79 is currently in the desired flow envelop (green)|
Second is a hydrograph which paints freshwater discharges from the S-79 relative to the historic record (shading) and the desired flow envelop (color coding). At the bottom you will see annual discharge volume in millions of acre feet per year, too.
|Historically, S-79 is outside the desired|
flow envelop more than it's in.
The third chart is my favorite: I call it the Caloosahatchee Rosetta Stone. It reports the history of freshwater releases from the S-79 in calendar format. The orange plus signs and red triangles indicate weeks when there was too little flow (causing saltwater intrusion) and the blue and black circles indicate weeks when freshwater flows were too high.
Fourth is the graph which shows the relationship between freshwater releases from the S-79 and salinity in the estuary below using the same color coding as graphs two and three.
|The four graphs are color coded for easy cross reference|
To be sure, these graphs don’t tell you everything you need to know about freshwater flows into the Caloosahatchee Estuary …
But they are handy reference in case you do.
I update them weekly.
You can find them here.