Tamagawa Aqueduct

It was constructed by the Tokugawa shogunate to supply drinking and fire-fighting water from the Tama river to Edo, providing irrigation water around farm villages.

The project was undertaken by the Seiemon brothers who were awarded the surname "Tamagawa" in honour of their accomplishment.

Prior to the construction, the two brothers were considered "mere peasants".

[3] In 1948, Osamu Dazai, considered one of the foremost fiction writers of 20th-century Japan, and his mistress Tomie Yamazaki, drowned themselves in the aqueduct together.

[4] Tamagawa Jōsui page on the Bureau of Waterworks, Tokyo Metropolitan Government Download coordinates as: