Due to its depth, the volume of Lake Shikotsu reaches 3/4 of the volume of Lake Biwa, Japan's largest lake, despite of having only 1/9 of that lake's surface area.
Karena kedalamannya, volume Danau Shikotsu mencapai 3/4 dari volume Danau Biwa, danau terbesar di Jepang, meskipun luas permukaanya hanya 1/9 dari danau Biwa.