The Watarase River ( 渡良瀬川 , Watarase-gawa ) is a major river in the northern Kantō region of Japan . A tributary of the Tone River , it is 106.7 kilometres (66.3 mi) in length and drains an area of 2,621 square kilometres (1,012 sq mi). Its source is at Mount Sukai on the boundary of the city of Nikkō in Tochigi Prefecture and it empties into the Tone River at the boundary of the city of Koga in Ibaraki Prefecture and the city of Kazo in Saitama Prefecture . It is classed as a First-class river by the Japanese government.
6-622: Although the river currently discharges into the Tone River, its original route was via the Edo River into Tokyo Bay . Its route was changed as part of the massive land reclamation and flood control works undertaken by the Tokugawa shogunate in the 17th and 18th centuries. 36°09′15″N 139°41′48″E / 36.15417°N 139.69667°E / 36.15417; 139.69667 (mouth) This Gunma Prefecture location article
12-618: A stub . You can help Misplaced Pages by expanding it . Edo River The Edo River ( 江戸川 , Edo-gawa ) is a river in the Kantō region of Japan . It splits from the Tone River at the northernmost tip of Noda City in the Sekiyado district, crosses through Nagareyama and Matsudo , and empties into Tokyo Bay at Ichikawa , Chiba Prefecture. The Edo forms the borders between Tokyo , Chiba , and Saitama prefectures. The Edo River
18-604: Is 59.5 kilometres (37.0 mi) long. The course of the Edo River was originally the lower course of the Tone River. The Tone was diverted in 1654 by the Tokugawa shogunate to protect the city of Edo from flooding. The Edo was used to connect the north and east of the Kantō region to the capital at Edo, specifically to transport large amounts of cargo from Chōshi and other cities on the Pacific Ocean coast inland to
24-451: Is a stub . You can help Misplaced Pages by expanding it . This Tochigi Prefecture location article is a stub . You can help Misplaced Pages by expanding it . This Ibaraki Prefecture location article is a stub . You can help Misplaced Pages by expanding it . This Saitama Prefecture location article is a stub . You can help Misplaced Pages by expanding it . This article related to a river in Japan is
30-685: Is located on landfill adjacent to a diverted branch of the Edo River known as the Kyū Edo River which empties into Tokyo Bay between Urayasu, Chiba and the Minamikasai district of Edogawa, Tokyo . The Edo river has distance markers at every 250 meters that mark the distance from the river mouth that meets with the Tokyo Bay. 35°40′14″N 139°57′02″E / 35.670687°N 139.950556°E / 35.670687; 139.950556 (mouth) This Ibaraki Prefecture location article
36-476: The capital. Before the industrialization of the Tokyo region the river was also used to cultivate lotus roots . Inland transportation ended in the early 20th century due to the development of an extensive rail cargo network in the Kantō region, but the Edo River remains an important source of water for industrial production as well as drainage for the densely populated areas of metropolitan Tokyo. Tokyo Disneyland
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