The lower section of the Blue River in Colorado, from Rome to Leslie Gulch, is a Class II-III river run that is suitable for intermediate paddlers. The best time to float this section is during the spring runoff, when the water levels are high and the rapids are more challenging. The river has several obstacles, including some tight turns, rocky sections, and small drops. The recommended flow rate for this section of the river is between 200-400 cfs. Overall, this is a fun and scenic river run that offers a good mix of rapids and calm stretches.