The lake is defined in the language, as stated in the contemporary Arabic dictionary, as a community of vast water surrounded by land on all sides, and its collection is lakes and lakes. This definition agrees with the scientific definition of a lake.

fresh or salty, if the lake is open; That is, its water ends in a river, so it is fresh, but if it is closed and its life cycle is related to evaporation only, then it is a salt lake.

As for the rivers that flow into the Caspian Lake, they are numerous; Among the most important and greatest of them is the Volga River, from which most of the lake’s water comes and its source is Russia, and there is the Terek River from Russia as well.

The Caspian Sea is the largest lake in terms of area. The Caspian Sea is the largest lake in the world, despite the use of the term sea, but it is actually considered a lake. It is also the largest closed inland water body in the world, with a total area of ​​371,000 square kilometers. It contains 78,200 cubic kilometers of water, and is considered the third deepest lake in the world, with the deepest part reaching 1025 m.[1] It is located to the east of the Caucasus Mountains, and to the west of the vast steppes of Central Asia,[2] and it is bordered by Russia from in the northwest, Azerbaijan in the west, Iran in the south, Kazakhstan in the northeast, and Turkmenistan in the southeast

Ranking of lakes by size The ten largest lakes in the world can be arranged in terms of size, after Lake Baikal, which are as follows

The largest inland sea in the world is the Caspian Sea, which can also be considered the largest lake, however, it cannot be included in this list due to the countries where the Caspian Sea is located did not agree to name it as a sea or lake.


Lake Baikal, located in southern Siberia, contains one fifth of the water on the planet, and is the deepest and largest lake in the world. The lake has a depth of 1,741 meters below sea level, and a volume of 5,700 cubic miles