River system

A river system is a network of rivers and streams that drain a specific area of land, known as a watershed or basin. The main river collects water from smaller tributaries, as well as rainfall and melting snow. This system plays a crucial role in transporting water, nutrients, and sediments, supporting ecosystems and human activities. Key components include the source (where the river begins), the course (the path it takes), and the mouth (where it flows into a larger body of water, like an ocean or lake). River systems are vital for agriculture, transportation, and providing freshwater resources.