River waves are just not comparable to ocean waves. The mechanics are different and so is the shape and power. I only know of one river wave that reliably stand

River waves are just not comparable to ocean waves. The mechanics are different and so is the shape and power. I only know of one river wave that reliably stands up and curls and is big enough to surf, and that's on the corner of a huge hydraulic on the Zambezi River in Africa. River waves also tend to be sensitive to flow, changing pretty dramatically (or even disappearing) with more or less water. There are plenty of river waves that attract surfers, like the Lachine waves near Montreal. But even at their best, they're not like ocean waves.