About IHARA TAKASHI
About 西日本技術開発
About KAWAKAMI KEIJI
About SAKADA KENSUKE
About ONIKURA NORIO
About 九大 水産実験所
About 河川技術論文集
About Miyazaki prefecture
About river
About dam
About sand washout
About Pisces
About environmental impact
About habitat
About dam operation
About river environment
About reservoir operation
About 耳川
About 通砂
About Reservoirs,regulating ones
About River survey and plan
About 耳川
About 水系
About ダム
About 砂
About 実施計画
About 魚類
About 影響予測