For a quarter of a century, Terry Butler has been observing the way rivers course through King County.
He has seen some, like the Tolt, transform overnight, when an avulsion – the rapid abandonment of a river channel to create a new one – has occurred. He has seen others migrate gradually, moving laterally across a basin over the course of years. He has watched side channels become main channels, witnessed erosion and sedimentation and has seen the dramatic changes a landslide can trigger.
“That’s why my work has been endlessly fascinating,” he said. “Rivers are dynamic. They’re prone to change. And yet people generally live near rivers and construct things near rivers. We’re drawn to rivers. And that can create problems.”
Read more at The Downstream Blog