auto-translate The origin of the Tamagawa josui
From now on, more than 300 years old, Tokugawa four generals, water shortages in Edo to compensate for pulling the water from the TAMA River was planned. So the Tamagawa brothers trained Matsudaira nobutsuna vassal yasumatsu money right Mamoru gate, from Hamura until yotsuyaokido Musashino dig broken by, to supply water to Edo 808 town Canal was built. This is the Tamagawa-josui.
It is used as waterproofing water. Most reclaimed its downstream in the current, approximately 950 m passing through Setagaya-Ku section top transformed into hazy shade of green.
多摩川兄弟的训练，Matsudaira 宣维藩为钱右卫门，从 Hamura 至 yotsuyaokido 武藏野挖断，以向江户 808 镇运河建成供水。这是玉川-如水。它用作防水水。
大部分回收其下游中的电流，通过转化成绿色的朦胧灯罩都世田谷节顶部大约 950 m。