Where there are fresh water ponds or lagoons, non salt water, my assumption would be that at least 1 alligator lives there. They stay close to the water when sunning themselves, and will leave you alone as long as you leave them alone. Never feed or act agressive to a gator. Consequences could be extreme. I have lived here for over 8 years, and have many alligators in the waters behind my house without incident. It isn't how many as much as it is pay attention, and show respect. I would put you in touch with the wildlife group on Kiawah who can give you all the information you need including the population. If I can help you further please contact me.