Mt. Aonegatake is the mountain providing the source for three rivers - Kisaya-gawa River which is a branch of Yoshino-gawa River that flows to the east, Akino-gawa River which flows to the west and Otonashi-gawa River which flows to the north - making it a suitable place for the god of moisture and water distribution to be enshrined.
青根ヶ岳は吉野川の支流である喜佐谷川が東へ、秋野川が西へ、音無川が北へ流れるなどの源流となる山で「水分水配り」の神の鎮座地にふさわしい。