If you were in a boat and went to the right side of the dock area, you would find the famous spring 50 feet below. You would also see some artifacts left in the water from various movies and TV shows that were filmed here. "I Spy," was one of them, a James Bond movie, and many, if not most, of the Tarzan movies were filmed in Silver Springs.
But it's the springs that make Silver Springs what it is. The cave at 50 feet below gushes forth with about 1/2 million gallons of water every 24 hours. That's enough water to quench the thirst of New York City for a day. The water is 99.9% pure and is at 72 degrees Fahrenheit year 'round.
The water becomes the Silver River which feeds into the Ocklawaha River, and then into the St. John's River and finally into the Atlantic Ocean.