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Explores the traits and characteristics of a river ecosystem, using the Columbia River Basin as an example.

An exploration of the Nile River that discusses its geologic history, plants, and animals, and explores how it is used by humans and efforts to protect it.

Traces the history of river systems across the United States and examines their current state, discussing how human activities have impacted the nation's rivers and impaired connections between river worlds and other ecosystems.

Investigates the plant and animal life found in ponds and streams and suggests related experiments and activities.

A photo essay about the range of plants and animals found in fresh water throughout the year, examining the living conditions and survival mechanisms of creatures dwelling at the edge of the water, on its surface, or under the mud.

Introduces birds, fish, and other animals which live in or near ponds and streams.

Photographs and simple text describe the Earth's rivers and lakes, their wildlife and plants, and how humans use them.

Presents an overview of rivers, how they are formed, their uses, and some of the forces threatening rivers today.

Describes the course of the largest river in North America, the Mississippi and the connections between the plant and animal species that live in and around it.

Explores how and why people have made their homes in river regions throughout history and around the world.

Describes the physical geography, biology, ecology, history, uses, and management of lake and river biomes; looks at the unique properties of freshwater, lakes, and rivers; features portraits of specific lakes and rivers around the world; and includes photographs, charts, illustrations, a glossary, and an index.

As they spend the day helping to clean up Otter Creek, two friends learn about the different animals that live there.

Presents an introduction to rivers, explaining what they are, examining their sources and natural features, and discussing river wildlife and resources, man-made alterations, and leisure and tourism along the rivers.

Explores the different forces that act to change rivers courses, including the effect of humans in the process and what can be done to lessen our impact.

Text and illustrations describe a river food chain and provide facts about bacteria, plants, and animals in a river ecosystem.