Lake Peipus Lake Peipus Lake Peipus (; ; ) is the largest transboundary lake in Europe, lies on the border between Estonia and Russia. The lake is the fifth-largest in Europe after Lake Ladoga and Lake Onega (in Russia north of St. Petersburg), Lake Vänern (in Sweden), and Lake Saimaa (in Finland). Lake Peipus represents a remnant of a body of water which existed in this area during an Ice Age. It covers , and has an average depth of , the deepest point being . The lake has several islands and consists of 3 parts: The lake is used for fishing
Lake Engure established here in 1957. It contains a floating base for ornithologists. The lake was included in Ramsar list of wetlands of international importance in 1995. Lake Engure Lake Engure is a lake in the western part of Latvia, in the Talsi District. It is the third largest lake in the country after Lake Lubāns and Lake Rāzna. Lake Engure is an ancient sea lagoon, divided from the sea by a 1.5 - 2.5 km wide sand bar with dunes. Its outflow is the artificial Mersraga channel, dug in 1842. It is eutrophic, mostly overgrown with reeds, and contains 16 species