White water safety documents, graphics, maps, etc.

'Tis the season! I've been thinking about whitewater a lot this morning and was going some reading. I am not a river person but I've done a little. I mainly just think that river people/sports are rad.

I found an awesome selection of documents from the American Whitewater organization. I figured I would share!

1. Here is their safety code for online reading
2. Scale of difficulty explanation
3. Cool graphics of rock features and what they look like from the front, top, and underwater 
4. River signals
5. defensive and aggressive swimming techniques 

Happy reading!

P.S. You CANNOT skip this epic river map

https://www.americanwhitewater.org/content/River/view/river-index