The Yankee Jim Canyon Joe Brown to Miner River run in Montana on the Yellowstone River is a Class II-III run with several challenging rapids, including Joe Brown and Yankee Jim. The best time to float this section is from mid-June to early July with CFS recommendations of 7,000-15,000. It is important to note that there are several river obstacles in this section, including several low bridges and a diversion dam that must be portaged. Overall, this is a unique and exciting stretch of the Yellowstone River that is perfect for intermediate boaters looking for a challenge.