Perhaps also voluntary crossing of small rivers, small lakes, flooded areas. If you're lost in a mountain and your choice is to cross a river or do a 20km walkaround, being able to swim makes a big difference (chances are you'd avoid going in the mountains altogether, but that missing a lot of fun)
Also adults know how to avoid falling into water, small kids are not so good at this game yet.
Also adults know how to avoid falling into water, small kids are not so good at this game yet.