Rivers play a vital role in the life of the planet. They provide water for wildlife, plant life, and people, and they help to fertilize fields where corn and other crops grow. But how were these rivers made? This children's book takes readers/students on a journey down a river from its source at the top of a mountain to its mouth where it meets the sea. The book shows how nature created the river and how the river works within the world. Through clear text and lively illustrations, the book helps young readers understand why rivers are nature's wondrous waterways. Lists six books for further reading. Suggested for ages six through eight. (BT)