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17-585: 35°38′25″N 140°3′47″E  /  35.64028°N 140.06306°E  / 35.64028; 140.06306 The Hanami River ( 花見川 , Hanami-gawa ) is a river in Yachiyo and Chiba , Chiba Prefecture , Japan . The river is 18.9 kilometers (11.7 mi) in length and has a drainage area of 94.5 square kilometers (36.5 sq mi). The Hanami is one part of the Inba Discharge Channel ( 印旛放水路 , Inba Hōsuiro ) . The upper part of

34-625: Is 1394 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.5 °C, and lowest in January, at around 4.5 °C. Per Japanese census data, the population of Yachiyo has grown rapidly over the past 70 years. Yachiyo has been inhabited since the Japanese Paleolithic period, and archaeologists have found stone tools dating to over 30,000 years ago. The Chiba clan controlled

51-560: Is located inland in northwestern Chiba Prefecture on the Shimōsa Plateau , about 13 kilometers from the prefectural capital at Chiba and 33 kilometers from central Tokyo. The Shin River , 10 kilometers (6.2 mi) in length, flows through Yachiyo and forms the upper part of the Inba Discharge Channel . Pollution was once problematic along the river caused by phosphorus , potassium , and nitrogen draining from vegetable farms along

68-715: The Kantō region . The clan settled in the Shimōsa area in the early 12th century. The Chiba came into conflict with Minamoto no Yoshitomo during the 1140s over estates in present-day Chiba Prefecture . The Chiba, however, came to support Yoshitomo in the Hōgen Rebellion (1156). During the Genpei War (1180–1185) the Chiba clan, as well as the Hōjō , Miura , and Doi clans, opposed

85-682: The Taira clan . The clan was founded by Chiba Tsunetane , the son of Taira no Tadatsune . The Chiba governed in Shimōsa Province , and the clan was based in present-day Chiba City . Additionally, for a period, the clan controlled the Sōma Manor that extended into present-day Ibaraki . After the establishment of the Kamakura shogunate , the head of the Chiba clan became the hereditary shugo governor of Shimōsa Province. The Chiba clan descends from

102-510: The lower house of the Diet of Japan . Yachiyo is a regional commercial center and a bedroom community for nearby Chiba and Tokyo. The commuting rate to Tokyo is 26.6% (2010 census). There is some residual agriculture, with rice and nashi pears grown. Pearl Musical Instrument Company is located within Yachiyo. Isumi has 22 public elementary schools and 13 public middle schools operated by

119-750: The temples at Narita . After the Meiji Restoration , the villages of Owada in Chiba District and Aso in Inba District , Chiba Prefecture were founded on April 1, 1889 with the creation if then modern municipalities system. However, much of the area of these villages was already under the control of the Imperial Japanese Army , who had established a training school in 1876 for infantry maneuvers. The school remained an active military installation until 1945. Yachiyo Town

136-436: The 8th century Emperor Kanmu through the sequence of Imperial Prince Kazurahara (786–853) — Prince Takami — Taira no Takamochi — Muraoka Yoshifumi — Muraoka Tadayori — Chiba Tadatsune — Chiba Tsunemasa — Chiba Tsunenaga — Chiba Tsunekane — Chiba Tsuneshige — Chiba Tsunetane — Azuma Taneyori . The Emperor Go-Daigo authorized the head of Chiba family, Chiba Sadatane , as chief daimyō and samurai of

153-932: The Kemigawa area continued, however, until 1952. A large-scale bicycle path , the Inbanuma Bicycle Path, is under construction to span the entirety of the Inba Discharge Channel. The section of the path along the Hanami River has been designated as the Hanami Cycling Road. It is not yet complete and unpaved portions remain in Kashiwaimachi in Ichikawa and Yokoto in Chiba City. Yachiyo, Chiba Yachiyo

170-683: The area of present-day Yachiyo from the late Heian period to the early Muromachi period . In the Sengoku period , the area came under the control of the Murakami clan. During the Edo period the area was divided between tenryō territory under the direct control of the Tokugawa shogunate and areas controlled under the Sakura Domain . It developed as a post town on the pilgrimage route to

187-604: The canal was completed. Within two years shallow riverboats carried rice and sweet potatoes from the Tone River area to Kemigawa Harbor, and in turn returned fertilizer up the canal to agricultural areas in its upper reaches of the Hanami. Shipping along the Hanami River declined greatly by the end of the Tokugawa period due to the construction of roads along the river. The transport of sweet potatoes for starch production in

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204-569: The city government, and six public high schools operated by the Chiba Prefectural Board of Education. The prefecture also operates one special education school for the handicapped. [REDACTED] Keisei Electric Railway - Keisei Main Line [REDACTED] Tōyō Rapid Railway Company - Tōyō Rapid Railway Line Chiba clan The Chiba clan (千葉氏 Chiba-shi ) was a Japanese gōzoku and samurai family descending from

221-712: The drainage facility is designated as the Shin River . The lower part, the Hanami, ranges from the Ōwada Drainage Pump Station in Yachiyo City, and drains into Tokyo Bay in the Mihama Ward of Chiba City. The lower part of the river where the Hanami empties into Tokyo Bay is known as the Kemi River ( 検見川 , Kemi-gawa ) . Numerous sluices have been built on the Hanami to protect the surrounding area from damage due to high tides and typhoons. The Hanami River

238-549: The greater 'core' Taira clan and supported Minamoto no Yoritomo . Chiba Tsunetane, clan chief of the period, won Yoritomo’s trust and helped establish the Kamakura shogunate. The power of the clan increased in this period, but ultimately declined during the Muromachi period (1336–1573). The Chiba clan was completely conquered by Toyotomi Hideyoshi before the establishment of the Tokugawa shogunate . Many descendants of

255-418: The length of the river. A 19 kilometers (12 mi) walking path was built by the city of Yachiyo, and features a pedestrian suspension bridge with an observation platform. Chiba Prefecture Yachiyo has a humid subtropical climate (Köppen Cfa ) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Yachiyo is 14.9 °C. The average annual rainfall

272-484: Was created by the merger of Owada Town with Aso and Mutsu villages in 1954. Yachiyo was elevated to city status on January 1, 1967. Yachiyo has a mayor-council form of government with a directly elected mayor and a unicameral city council of 28 members. Yachiyo contributes three members to the Chiba Prefectural Assembly. In terms of national politics, the city is part of Chiba 2nd district of

289-540: Was developed as a canal in the 18th century to connect the Tone River to Tokyo Bay, control flooding in the Inbanuma marsh area, and facilitate the construction of new rice paddy areas in Shimōsa Province . The first attempt at building a canal was in 1724, but funds provided by the Tokugawa shogunate to the chief of Hirato Village, now part of Yachiyo, dried up and the project was abandoned. In 1844 final work on

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