Iwakawa Weir

In Iwakawa, the water that springs out from the vicinity of the current Tomei Expressway Yokohama Machida Interchange flows through Okabe, Nakamura, Mi Maeda, Shimonaga Tsuda, and pours into the Onda River.
In the past, in Nagatsuta, rice fields were mostly made on both sides of Iwakawa. The water from Iwakawa was used for irrigation (irrigation) of the surrounding farmland, and was also used for water trucks responsible for heavy labor when polishing rice. From around Meiji 45 (1912), a waterwheel of Okabe, a waterwheel of Shimonaga Tsuda, and a waterwheel of Mi Maeda were made, and among them, the waterwheel of Shimonaga Tsuda was the blessed with the highest amount of water.

The Iwakawa weir, which is indispensable for irrigation in Shimonaga Tsuda, was severely damaged by the Great Kanto Earthquake of 1923 (1923), but it was a construction cost funded by national and prefectural subsidies and local volunteers. It was renovated into a concrete weir in 1926. At present, it is not used as a weir, but the renovation work is described on the Iwakawa Weir Remodeling Monument.

Near 1-2 Ibukino, Midori-ku, Yokohama (about a 11-minute walk from Nagatsuta Station)