Florence River Park sits on a mellow Class I stretch of the Arkansas River in Florence, Colorado, with a gentle, low-volume wave built more for learning than for punch. Locals will tell you it's gotten weaker with age, so don't expect much power on tap here. Bring a longboard or an inflatable surf-specific board that'll float in skinny, low-volume water rather than a short, high-performance shred stick. Spring runoff is your best shot at catching it with any real shape before flows drop off for the season.