Will the sea level rise if a large river flows into it?

Imagine a situation that we direct the flow of one large river into the sea, I wonder what happens. In fact, the water level will not rise, because the balance of the water level in the sea will adhere, and the river, no matter how large it is, will still not bring enough water into the sea for its level to rise. In addition, for example, the Volga or the Dnieper flows into the sea, but for some reason the water level does not rise.

To answer the question of whether the sea level will rise if the runoff of a large river is directed into it, it is necessary to understand more deeply the interaction of river and marine systems:

water from the river entering the sea will inevitably evaporate. It is part of the water cycle in nature. Thus, the sea level is regulated;
an increase in the flow of water into the sea due to river flows is compensated by the communication of the seas with each other. That is, the incoming water will be distributed to other bodies of water;
all existing river and sea systems have developed long ago. Therefore, the level of river water runoff has already developed. And seasonal increases in runoff do not lead to sea level rise.

Thus, the answer to this question will be negative. The sea level will not rise if the drains of a large river are directed into it. In this case, natural mechanisms will work, and the water balance will be restored very quickly. Moreover, the seas have a large area. And even for a slight rise in sea level, the drains must be of colossal power.