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Dam in Japan

List of dam in Japan (found 127 locations). Category description: A barrier constructed across a stream to impound water

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Obanashi-damu (Shiga Prefecture)
Obira Dam (Hokkaido)
Ochiai-damu (Okayama)
Ochiai-damu (Hokkaido)
Ochiai-damu (Gifu)
Oda-damu (Miyagi)
Odachi-damu (Kagoshima)
Odagawa Dam (Aomori)
Odagiri-damu (Nagano)
Odani-damu (Kochi)
Ogawa-damu (Ibaraki)
Ogawa-damu (Fukuoka)
Ogi-damu (Fukushima)
Ogura-damu (Niigata)
Oguragawa-damu (Niigata)
Ogōchi-damu (Tokyo)
Ogōchi-damu (Shizuoka)
Ohara-damu (Toyama)
Oikawa-damu (Miyagi)
Oiragawa-damu (Yamagata)
Okinai Bōsai-damu (Hokkaido)
Okino-damu (Shizuoka)
Okita-damu (Miyazaki)
Okubo Dam (Chiba)
Okuizumi-damu (Shizuoka)
Okumiomote-damu (Niigata)
Okuniikappu-damu (Hokkaido)
Okusaru-damu (Hokkaido)
Okususobana-damu (Nagano)
Okutadami-damu (Niigata)
Okuyama-damu (Shiga Prefecture)
Omata-damu (Toyama)
Omogo Dai-2-damu (Ehime)
Omogo-damu (Ehime)
Onbe-damu (Shimane)
Ongi-damu (Okayama)
Onigatake-damu (Okayama)
Onikuma-damu (Nagano)
Onjuku Dam (Chiba)
Onna-damu (Okinawa)
Onnebetsu Dam (Hokkaido)
Onobaru-damu (Oita)
Onobaru-damu (Oita)
Origawa-damu (Gifu)
Osagasawa-damu (Yamagata)
Osaka-damu (Gifu)
Osakabegawa-damu (Okayama)
Oshibetsu-damu (Hokkaido)
Oshirarika-damu (Hokkaido)
Osōshu-damu (Hokkaido)
Otofuketosui-damu (Hokkaido)
Ottate-damu (Tokushima)
Oya-damu (Ishikawa)
Ozawa-damu (Hokkaido)
Ōbidani-damu (Tokushima)
Ōdo-damu (Kochi)
Ōfunato-damu (Gifu)
Ōgahora-damu (Gifu)
Ōgaki-damu (Fukushima)
Ōgawara Dam (Nagasaki)
Ōgōto-damu (Tochigi)
Ōhashi-damu (Kochi)
Ōi Dam (Fukuoka)
Ōi-damu (Gifu)
Ōigawa-damu (Shizuoka)
Ōishi-damu (Niigata)
Ōji-damu (Hyōgo)
Ōkawa-damu (Okinawa)
Ōkawa-damu (Kagoshima)
Ōkawa-damu (Kagawa)
Ōkawa-damu (Fukushima)
Ōkawase-damu (Hyōgo)
Ōkirihata Dam (Kumamoto)
Ōkubo-damu (Hiroshima)
Ōkuboyama-damu (Ehime)
Ōkura-damu (Miyagi)
Ōkurodani-damu (Gifu)
Ōkusagawa-damu (Fukushima)
Ōma-damu (Shizuoka)
Ōmachi-damu (Nagano)
Ōmatsukawa-damu (Akita)
Ōmiya-damu (Tottori)
Ōmorigawa-damu (Kochi)
Ōmu Dam (Hokkaido)
Ōmuro-damu (Tochigi)
Ōnagami-damu (Shimane)
Ōnakao-damu (Oita)
Ōnita-damu (Gunma)
Ōno-damu (Yamaguchi)
Ōno-damu (Kyoto)
Ōno-damu (Iwate)
Ōno-damu (Hokkaido)
Ōnogawa-damu (Niigata)
Ōsa-damu (Okayama)
Ōsako-damu (Nara)
Ōsano-damu (Fukuoka)
Ōsawa-damu (Hokkaido)
Ōseuchi-damu (Miyazaki)
Ōshida-damu (Iwate)
Ōshima-damu (Aichi)
Ōshirakawa-damu (Gifu)
Ōshuku-damu (Iwate)
Ōso Dam (Kumamoto)
Ōsugi-damu (Hyōgo)
Ōta Dai-1-damu (Hyōgo)
Ōta Dai-2-damu (Hyōgo)
Ōta Dai-4-damu (Hyōgo)
Ōtake-damu (Okayama)
Ōtakigawa-damu (Nagano)
Ōtani Dam (Kumamoto)
Ōtani-damu (Hyōgo)
Ōtodo Dam (Hokkaido)
Ōtomari-damu (Hiroshima)
Ōtori-damu (Fukushima)
Ōtosawa-damu (Miyagi)
Ōtsumata-damu (Fukushima)
Ōuchi-damu (Kagawa)
Ōuchi-damu (Fukushima)
Ōuchibaru-damu (Miyazaki)
Ōura-damu (Saga Prefecture)
Ōura-damu (Okinawa)
Ōya-damu (Niigata)
Ōyachi-damu (Niigata)
Ōyodogawa Dai-2-damu (Miyazaki)
Ōyūbari-damu (Hokkaido)
Ōzasō-damu (Fukushima)
Ōzuchi-damu (Shiga Prefecture)