The infinite circulation water wheel can circulate for 3 hours. Different waters participate in the water cycle for different lengths of time. The longest duration is polar glaciers and snow all year round. The shortest duration is for organic water, which takes a few years. hours, and river water takes 16 years. It takes 1 year for soil water, 5 years for swamp water, 17 years for lake water, 1,400 years for deep groundwater, 1,600 years for mountain glaciers, and 2,500 years for the world's oceans.
What everyone said is not entirely correct. In fact, the great circulation between sea routes is a system of "infinite" water circulation. The energy for the water cycle comes from the sun. When the sun is present, the water cycle continues. Of course, when the sun disappears, the water cycle stops. As the Sun still has 6 billion years to live, we can conconsider the water cycle on Earth to be “infinite”.
I don't know if LZ is satisfied with this explanation