- Obayashi, Koani River | Shitakawara Obayashi, Kamikoani Village, Kitaakita District, Akita Prefecture 018-4431 | Ministry of Land, Infrastructure, Transport and Tourism
- Koani River Lifelong Learning Center | Kamikoani Lifelong Learning Center, 60-3 Mukaikawara, Osawada, Kamikoani Village, Kitaakita District, Akita Prefecture 018-4421 | Kamikoani Village Office
- Shihadachi Bridge, Koani River | Dogawa, Kamikoani Village, Kitaakita District, Akita Prefecture 018-4422 | Kamikoani Village Office”
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