Just a forewarning to anyone who tries this, people have been hassled by police for going up the run at Blue Springs, which is just nearby. I wouldn't suggest pushing the legalities unless you're willing to pay and prove yourself right.
From my interpretation, Matt is correct, but it's just a warning.
Also Matt (or Kelly if you're reading this), how do things work if it's a state park? I know you can't paddle up Troy springs without being fined, nor sites like Wakulla. Do these rules extend to county parks? Figured you'd know better than me since you have a boat and dive the river often.
I look at the letter of the law versus making landowners mad. Yeah,I can navigate my boat into an area,and have legal access,but to what benefit; now do I have an angry tax paying owner that complains to county officials how much of a nuisance those cave divers are. Those feelings become pervasive and makes getting access to other areas difficult due to the interpretation of cave divers being a nuisance. I have gained access to a lot of areas,and never had a run in with law enforcement or land owners. Cave diving having a positive self image benefits us all. I can think of some other sports that don't have a positive image in the mind of the public,and I see their rights diminished.