Among the epithets that are awarded to Finland, there is one – “The country of a thousand lakes”. Many go there on purpose to see it with their own eyes. In fact, there are much more than a thousand lakes here. How many lakes are in Finland? Hydrologues involved in the study of this issue counted no more or less – about 19,000 lakes. They occupy approximately 9% of the country’s area. Lakes, as a rule, of complex shape, have a peninsula and islands, many of them are united by the ducts into large lake systems. Mostly these lakes are small – up to 20 meters deep. However, there are deep, vast in the area of water bodies. On the lake plateau in the center of Finland there is, for example, Lake Payanne, the depth of which reaches 93 meters. The largest lake is located in the southeast and is called Saima. In the north of Lapland is the famous Lake Inari. In addition to lakes, there are a large number of rivers – about two thousand. Basically, these rivers connect the lakes or flow from lakes to sea. In the north of the river the largest. In addition, there are many artificial channels, of which one – Simen Canal – connects the lake with the Gulf of Finland, and part of it passes through the Leningrad Region. The nature of Finland is interesting and diverse and deserves all kinds of interest.