Waterworld is a 1995 post-apocalyptic science fiction film. The film was directed by Kevin Reynolds and co-written by Peter Rader and David Twohy. It is based on Rader's original 1986 screenplay and stars Kevin Costner, who also produced it. It was distributed by Universal Pictures.
.....
The setting of the film is the distant future, although no exact date is given. (Suggested as 2500.) The polar ice caps have completely melted, and the sea level has risen many thousands of feet, covering all the land.
.....
The group indeed finds Dryland, which turns out to be a portion of Mt. Everest, which is still above sea level.