Castle Creek River Run on the Taylor River in Colorado is a Class III to IV river run, with a few Class V rapids. The best time to float is from late May to early July when the water is high enough. The river features challenging drops, steep chutes, and technical boulder gardens. The obstacles on this section of the river include S-Turn, Sieve City, and The Waterfall. The recommended CFS range for this section is between 500-1500 CFS. Castle Creek River Run is a thrilling adventure for experienced paddlers seeking a challenging run.