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Update: June 10, 2013 About Shiga

Lake Biwa

Lake Biwa
Lake Biwa

Lake Biwa, with four million years of history, is one of the world’s precious few ancient lakes. Its water plays an important role in industry, in agriculture, and in supporting the lives of 14 million people throughout western Japan. Lake Biwa is also home to many living creatures. It is visited annually by 60,000 water fowls, fosters over 50 species of fish and 40 species of shellfish, and is home to rare creatures not found anywhere else, such as the willow gudgeon and isaza.

Endemic Species of Lake Biwa

Willow gudgeon
Willow gudgeon (En) Honmoroko(Jp)
Isaza
Isaza(Jp)
catfish
map of lake biwa
summary of lake biwa
Surface area Approximately 670 km² About one sixth of Shiga’s total area
Volume Approximately 27.5 billion m³ Despite a steady flow of water in and out of the lake, the water is said to take over 19 years to replace itself
Average depth Approximately 41 m
Shore length Approximately 235 km Equal to the distance between Otsu, Shiga and Hamamatsu, Shizuoka
Maximum width 22.8 km Between Aiba in Shinasahi, Takashima and Shimosakahama, Nagahama
Minimum width 1.35 km Near the Biwako-ohashi Bridge. The region north of the bridge is called Hokko(North Lake), which is 11 times larger in area than the region south of the bridge, Nanko(South Lake).
Maximum depth Approximately 104m Near the mouth of the Ado River