Archive: https://archive.today/U8n7W From the post: >>Whether you want to polish up your surfing skills for an ocean trip, or you’re curious to try a new-to-you sport, there are plenty of places to river surf in Colorado. And there seem to be more places to try it out than ever. River surfing is just that: riding a surfboard on a wave in a river. One big difference between ocean surfing and river surfing is that on the river, the surfer rides up and down the same (usually manmade) wave, unlike in the ocean where new sets are constantly rolling in and taking the surfer closer to the beach.