It is connected at the northern end by the River Kishi and a section of the Yama Canal to Lake Telemaru. At the southern end there is the Yon Narrows which opens out into Lake Telemaru's southern end, which feeds the River Yama and a further section of canal to Yamagakure 2. It is one of a series of interconnected, murky bodies of water in the Land of Mountains; its water visibility is exceptionally low due to a high peat content in the surrounding soil.