The is a tributary of the
Arakawa River that mainly runs through the eastern part of Saitama Prefecture. The river has and in
Okegawa, Saitama as points of origin and flows through
Ageo,
Minuma
or is an area of paddy fields and other agricultural fields along the Minuma Irrigational Canal in Saitama Prefecture, Japan. The area encompasses 1260 hectares and straddles across five wards of the city of Saitama ( Kita-ku, Ōmiya-ku, ...
and
Kawaguchi, and connects to the Arakawa River.
History
Originally, the river flowed into a wetland at the current region of
Minuma
or is an area of paddy fields and other agricultural fields along the Minuma Irrigational Canal in Saitama Prefecture, Japan. The area encompasses 1260 hectares and straddles across five wards of the city of Saitama ( Kita-ku, Ōmiya-ku, ...
. In 1629, a civil engineering project by created a reservoir and blocked the flow. In 1727, the reservoir levee was demolished to open up the area for creating rice paddies. In 1728, the lowest sections of the area were gouged to allow for the passage of water, which set the current position of the river.
Water quality
The water quality of the river is poor, since it flows through urban areas. A report published in 2006 by the
Ministry of the Environment indicates levels of
dioxins and dioxin-like compounds above the standards set for public waterways. For this reason, recent years saw efforts to clear up the river.
References
Rivers of Saitama Prefecture
Rivers of Japan
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