This document discusses the key components of streams and rivers, including stream banks, main channels, floodplains, and riparian buffers. It describes pools and riffles as two types of ecosystems in rivers and streams, noting that riffles usually have more organisms living in them due to higher oxygen levels. The document defines macroinvertebrates as small organisms without backbones that can be seen without a microscope, and explains how they are used to measure the health of streams.

1. Understanding Our Local Watersheds and Our Local Water Resources Lesson 2

3. Check Homework Questions

4. What is the difference between a stream and a river?

20. Importance of Macroinvertebrates

22. Where does water go after bathing, washing clothes, or flushing toilets?