The Watering Hole was a gathering place for Jurassic Park's sauropods such
as Brachiosaurus and hadrosaurs like Parasaurolophus. It was located somewhere in the Sauropod Paddock.

In the film, the inspection group pulls up with John Hammond on a hill overlooking the lake. This is the spot where they see the first dinosaur, Brachiosaurus, browsing.

The watering hole was surrounded by woodlands and grasslands, with low, rolling hills.

For more information see: Sauropod Paddock