Lake Viljandi Lake Peipus Lake Snadjarv Lake Ulemiste
Russian Federation Latvia Finland Lithuania
25% 90% 50% 75%
Russian Austro-Hungarian Ottoman British
Great Britain Sweden Finland Soviet Union
130 million 130 000 1.3 million 13 million
North Sea Baltic Sea Ionian Sea Adriatic Sea
Tallinn Narva Valga Paldiski