Located in Uji City in Kyoto Prefecture, Amagase Dam is on the Uji-gawa River, the common name of the middle reaches of the main stream of the Yodo-gawa River, which is known as a first-class river.
天ヶ瀬ダム（あまがせダム）は京都府宇治市、一級河川・淀川本川中流部、通称宇治川と呼ばれる流域に建設されたダムである。