I remember when my dad first told me the story of when some of his friends from his high school actually did die.

Near my city, there's a very fast flowing river, called the Willow River. An "average" river flows at about 5 km per hour. The Willow River flows at about 30 km per hour.

About 50 years ago, 7 teenagers wanted to take a canoe / kayak trip down the Willow River to celebrate their high school graduation.

Unfortunately, the waters of the river are too tough and impassable, so they all drowned.

You can see a photo of the river in the article here, and also a video of what the water flowing through the canyon looks like too.

The Willow River is very rough in spring (when the boys took their trip), because all the water melts from the ice and snow on the mountains, and greatly increases the flow downstream.

https://www.princegeorgecitizen.com/local-news/forty-years-after-river-tragedy-3699978

https://m.youtube.com/watch?v=VyBo6SVlog0