Lake Käsmu () is a lake in Estonia. It is located in the villages of Eru and Käsmu in Haljala Parish, Lääne-Viru County. Lake Käsmu is located on the southern edge of the Käsmu Peninsula in northern Estonia.

Physical description The lake has an area of . The lake has an average depth of and a maximum depth of . It is long, and its shoreline measures . It has a volume of . It has diverse vegetation in terms of the number of species: there are 22 types of macrophytes.

See also List of lakes of Estonia

References