The diagram illustrates the circle of water which moves continuous from below to above surface on the Earth.
Overall, it is clear that there are three stages in this process, beginning with melting snow in the mountain and ending with raining to the ground.
Firstly, water absorbed from ground through rain or from melted snow creates underground water and then flows to the ocean without reaching impervious layer. The salt water intrusion divides fresh water from ocean water. Next, thanks to the heat from the sun, water evaporates into the atmosphere. Moreover, there are 80% of total water vapour contributed by the sea.
In the next stage, consolidating water vapour moves to the high attitude and then forms the cloud. Following this, a heavy cloud causes rain or snow. Water from precipitation partly pours to the lake or can be absorbed into the ground. Another water cycle will start again.