Suwannee river!

 Manatee Springs is a first-magnitude spring. What this means is it produces a little over 81,000 gallons of water each and every minute, this equals about 117 million gallons each day. The water from the spring flows into the Suwannee river and then meets the Gulf of Mexico abotu 23 miles downstream.  underground springs are 72-degrees all year around!
You can see one of the divers!

These are the flood levels in Manatee Springs

 Cypress trees can live hundreds of years.  they have "knees" that protrude above the soil.