Smoke coming from the bottom of the water

Where the Yellow River enters the "Hukou", the turbulence flows down rapidly, and the water mist aroused rises into the sky, just like the billowing smoke rising from the bottom of the water. It can be seen miles away. The size of the mist at the mouth of the pot is related to the season and flow rate. In winter, the river freezes, most of the waterfalls turn into ice, the surface water decreases, the flow rate at the spout drops to 150-500 cubic meters/second, the waves are not big, and there is very little water mist flying out of the trough surface; in summer, the flow increases greatly, and the water overflows into the deep trough. The drop is very small, the waterfall disappears, and it is not easy to form dense water mist rising into the sky; in spring and autumn, when the flow is moderate and the temperature is not high, the drop of the waterfall is more than 20 meters, and the rapids splash, forming water mist that permeates the air, that is, "underwater eruption" Smoke" scene.

Boating on dry land

Hukou Waterfall not only has the wonder of "smoke coming out of the water", but it is also said to be "sailing on dry land". Upstream ships must leave the water and land here, and must be carried or transported around Hukou (the so-called "dry land boating") before they can enter the water and continue their voyage. This has not changed for thousands of years. [