What is a free-flowing river?
SNIPPET:
A free-flowing river is largely unaffected by human-made changes to its flow and connectivity. Water, silt, and other natural materials can move along unobstructed. Animals, such as river dolphins and migratory fish, can swim up and down stream at will. And the river itself can swell and shrink naturally, flow at an organic volume and rate, and replenish groundwater sources.
Full educational article with multiple animation graphics: 🌼https://www.worldwildlife.org/pages/free-flowing-rivers