What is a tributary?

A tributary is defined as a smaller stream or river that flows into a larger river. This relationship is significant in the context of river systems, as tributaries contribute to the water volume of the main river, affecting its flow, sediment transport, and ecological dynamics. The presence of tributaries can enhance biodiversity by providing varied habitats and influencing the chemistry and biological communities present in the larger river. Understanding the function of tributaries is essential for studying river ecosystems and managing water resources, as they play a critical role in hydrology and the overall health of aquatic environments.