Three miles north of the fishing bridge from yellowstone lake to Yellowstone Falls is the LeHardy's Rapids, named after a geographer in Jones' expedition in 1873, which is defined as the demarcation point between yellowstone lake and yellowstone river in geomorphology. In the shallow waters of the rapids in spring, there are many cutthroat salmon (salmon) resting here, accumulating strength to prepare for crossing the rapids and laying eggs on the upstream fishing bridge. During the expedition of 1873, the team members capsized while drifting here and lost a lot of materials. The wooden plank road built by 1984 made the tourists in Lehadi Rapids flourish, and also led to the disappearance of a group of ugly ducks who once lived here. Now, in order to restore the ecology, the plank road will be closed in early spring, but the ducks have not come back yet. Huangshi Grand Canyon to Huangshi Black Canyon

(Yellowstone Grand Canyon and

Yellowstone National Park's Black Canyon) flows from the fishing bridge, flows northward through the Lehard rapids, and slowly flows through Hayden Valley. Since then, the river has become turbulent and formed a waterfall. Yellowstone river crossed the Black Canyon after accepting Lamar River, the largest tributary.

The whole canyon area is located in Yellowstone National Park and can only be reached by foot or horse. The rivers here are usually quite swift, on the steep canyon walls. Below Knowles Falls, about four miles upstream of Gardner, anglers will find brown and white fish except rainbow trout and mountain trout. From Gardner to Yankee Jim Canyon, Huangshi River is the main growth area of medium-sized rainbow trout (Oncorhynchus mykiss) and black-spotted trout (Salmo clarki). From Gardner to Kewen Hot Spring Bridge, water is mostly forbidden, and the water quality is usually Class I and Class II. From Kewen Hot Springs to Kijim Canyon, the river becomes gentle, so anglers can fish along the banks. The Yankees' Jim Canyon is named after the legendary Jim Bridge. Compared with several rapids in Yellowstone National Park, the water quality in Jim Canyon is the best clean water. The steep canyon walls enable fish to survive. Many commercial fishing guides do not fish in this area because of the potential danger of hanging rocks in the canyon, but leisure fishing is still very common. From Tom Miner Bridge to Migrator, from Tom Miner Bridge or carbella to the rock area connecting the downstream sections, there are some water areas with excellent water quality and several beautiful ponds, and a large amount of water is quickly injected into the ponds. Once it flows through the upstream rock area, the slope of the river bed is greatly reduced, and the river becomes slow, forming a long pool. Amy Grant immigrated to the habitat of wild ducks. The immigrants downstream of Amy Grant are grey owls. This section of the river is the best place for fishing, hiking or canoeing. This is the habitat and rest area of wild ducks, and there is a beautiful pond with brown trout and colorful trout. The river from Duck Beach to Duck Rest and then to Carter Bridge is called Paradise Valley. The scenery on both sides of the river is the most spectacular scenery in Huangshi National Park and the best place for fishing. The scenic spot starts from Abu Sarroca Mountains in the east and reaches Galatin Mountains in the west. Along this countless stream (such as DePuy Spring Creek), there are many blue ribbon trout. Rainbow trout is mainly produced in this river, but brown trout can also be caught. The bridge from Carter to Highway 89 is called "town extension" because of the flow erosion of Huangshi River when it passes through Livingston. In view of the fact that the upstream stream is the spawning place of trout in spring, the water area of this river section is an ideal habitat for rainbow trout, and most of the trout in Huangshi River are also concentrated here. This section of the river is the best way for drifters to visit, but there are also tourists who wade on foot, which are all good choices. Highway 89 to Highway 89 Bridge to Big Timber. It starts about 5 miles east of Livingston, adjacent to Interstate 90. Where does highway 89 turn north, and the river passes through the white sulfur spring? This is the lower reaches of this river. Go down here and get to the big wood. There is less water from here to Livingston. But the shoal is far from the pond, so there is more unproductive water. When passing through the town, there were not as many fish as the upstream river, but some very large rainbow trout and brown trout were caught in this section. At the end of summer, the whole grassland will blow a large number of locusts into the river like a gust of wind, which will make the big fish in the river jump on the water and produce explosive reactions.