瓦葺掛樋跡

Walk at least once a week and stop by during breaks.

Kakehi The intersection of the rice field irrigation canal (Minuma substitute water) and the rice field drainage canal (Ayase River), in order to let each other flow as it is, the irrigation canal must flow higher than the drainage canal, which is the most difficult point. It is stated that it was very difficult because it was a wooden structure in the Edo period, and it seemed that it cost a lot of money. The brick was changed to one used for the aqueduct, and the remaining brick seems to be a remnant of it. (Example) I remembered what old people used to say that it was made of wood (the tub shop is profitable if the wind blows). Currently, water is drained through the Fusekoshi irrigation canal when hanging. (What is inverted siphon) A construction method that goes under another river, a tunnel construction method for irrigation canals. In addition, the Minuma Substitute Aqueduct is at the tip of a hanging aqueduct, and the irrigation canal is divided into two parts, the western edge and the eastern edge. The western edge is the turf of Warabi City, which merges with the general river, then with the Shiba River, then with the Arakawa near Kahama Bridge on Kannana-Dori Avenue, and then flows down to Tokyo Bay ahead of Wakasu Seaside Park. The eastern margin joins the Minumashiro Water Park in Adachi Ward, the nearby Kena River, then the Ayase River, then the Naka River, then the Arakawa near Nishikasai Station on the Tokyo Metro, and then Tokyo Bay, ahead of Wakasu Seaside Park. It runs down to. Even though it is an irrigation canal for paddy fields from Tone Ozeki, even after paddy field cultivation is over, water flow .....? The Minuma Substitute Aqueduct meanders through the former paddy field at the end of the aqueduct. * The inverted siphon in Shibayama, Shiraoka City has become a smarter inverted siphon than before, and is placed as a monument in the small Ushirono Park on the side of the old inverted siphon.

In the middle of the Edo period, Minuma substitute water was excavated for the purpose of reclaiming Minuma in Musashi Province (currently Saitama Prefecture) and developing new rice fields there. This is the intersection with the Ayase River, which is said to have been the most difficult part of the construction. I think it would be good to take water from here without having to pull the irrigation canal from the upstream, but this is a fairly lowland, and it seems difficult to smoothly drain the irrigation canal from the Ayase River to the downstream (in fact,). The irrigation canal runs higher than the Ayase River). Also, is the water right of the river affected? The area around here is a wet area, and the so-called "fushikoshi", where the irrigation canal goes under the river, was difficult with civil engineering technology at that time, so at first a wooden gutter was hung over the Ayase River, but of course As the gutters rotted, they needed to be replaced frequently. Then, in the Meiji era, we decided to use a brick gutter, but even so, the gutter was damaged every time the Ayase River flooded, and it cost a lot of money. For this reason, we are currently digging a tunnel under the river to run an irrigation canal, changing from "Kakehi" to "Frustrated siphon". It's a hassle to dive under the river in an aqueduct that runs higher than the river.