Discusses the water cycle, which consists of rivers, oceans, lakes, and streams as it erodes rock, sculpts mountains and coastlines, affects climate, and overtakes human land development.
Describes rivers and lakes as geographical features, the plant and animal life they support, some of the uses the humans make of their water, and the problem of pollution.
Thirteen-year-old Magnolia and her dinosaur partner, Paddlefoot, must discover why the Polongo River has dried up before it causes a disaster for Waterfall City, on the magical island of Dinotopia.