The Pumphouse to Double Bridges river run in Colorado is a popular section of the Colorado River for both beginners and experienced paddlers. The run is Class II-III and takes approximately 2-3 hours to complete. The best time of year to float this section is from May to September, with peak flows in June. The recommended flow range is between 1000-3000 cfs. The river features several rapids, including Eye of the Needle and Yarmony Rapid, but overall the run is relatively easy. However, caution is advised when navigating the boulder gardens and undercuts.