Go stand next to one. There is going to be a breeze. It's a draft. https://www.quora.com/What-creates-the-wind-at-the-bottom-of-a-waterfall-What-is-the-relation-between-the-height-of-the-waterfall-water-pressure-and-wind-force I thought everyone would know this . I don't buy the waterfall argument https://www.world-of-waterfalls.com/what-creates-the-wind-at-the-bottom-of-a-waterfall.html LOL