Shakujii River

The Shakujii River (石神井川, Shakujii-gawa) is a river which flows through the northwest quadrant of central Tokyo, Japan.

Shakujii River and cherry blossoms

Approximate course in Tokyo. The cities in Tokyo are shown to the left in pink, while the special wards of Tokyo are shown to the right in colour.

It springs up in Koganei Park in the district of Hana-koganei-minami-chō, in the city of Kodaira. It then flows in an easterly direction through the city of Nishitōkyō. Next, it continues through the special wards of Tokyo of Nerima-ku, Itabashi-ku and Kita-ku. At Horifune, Kita-ku, it empties into the Sumida River. With a total length of 25.2 km and a watershed of 61.6 km², it is categorized as a 1st class river by the Japanese government.

The famous wooden plank bridge for which Itabashi-ku is named crossed the Shakujii at Nakajuku. The bridge has now been replaced by a modern ferroconcrete structure.