Omaru Water Supply

Omaru Water and Omaru Water Land Improvement District

What is Omaru Water Supply?

The Omaru irrigation water, which is agricultural water, draws water from the Tama River at the Omaru intake and supplies water to orchards and rice fields up to Tama City in Kawasaki. The total length, including 9 main streams and about 200 tributaries, reaches 70 km.
The excavation period of the Omaru irrigation canal is considered to be in the early Edo period, and it was excavated as agricultural water as part of the Edo shogunate's large-scale flood control and water utilization policies, along with other irrigation canals in the Tama River basin. The finely branched waterways have been ingeniously designed, including multi-level crossings, to supply water to farmland up to the present day.
Even now, it mainly supplies water to agricultural land, and has also been developed as a waterside park, serving as a valuable waterfront space for citizens to relax.

What is the Omaru Irrigation Land Improvement District?

The Omaru Irrigation Land Improvement District is an agricultural organization that utilizes the Omaru irrigation water, consisting of farmers from the Omaru, Oshitate, Higashi-Naganuma, and Yanokuchi areas of Inagi City, as well as from the Sugajoshita, Suga, Sugadoro, Suga Inadazutsumi, and Suga Baba districts of Kawasaki City.
In the Omaru Irrigation Land Improvement District, we mainly maintain and manage the Omaru Irrigation Headworks, which is the entrance to the Omaru Irrigation. We adjust the water volume to ensure a stable water supply to agricultural land during the irrigation period (from May to September). Additionally, the members of the association take the lead in the community and carry out dredging of the irrigation channels several times a year.
In recent years, the number of union members has been decreasing due to rapid urbanization and the aging of farmers. However, we are working hard to maintain the function of Omaru Water, a historic agricultural water source that has continued since the Edo period, in cooperation with relevant organizations.