About MITSUZUMI AKIRA
About 関西電力 土木建築エンジニアリングセ
About OMOTO YUJI
About ニュージェック
About dam
About reservoir(water)
About sand washout
About bypass
About turbid water
About water quality
About benthos
About river bed evolution
About tunnel lining
About wear
About deposited silt
About Nara prefecture
About 旭ダム
About Reservoirs,regulating ones
About ダム貯水池
About 濁水
About 長期
About 対策
About 堆砂
About バイパス
About 排砂