The Ashida River ( 芦田川 , Ashida-gawa ) is a river that flows through the eastern part of Hiroshima Prefecture , Japan . The river provides the primary drainage for the Bingo region.
14-906: The source of the river is in the city of Mihara, Hiroshima and flows generally east toward Niimi, Okayama . After flowing through the Hattabara and Mikawa Dams in Fuchū, Hiroshima , the river passes through Fukuyama, Hiroshima , where it empties into the Seto Inland Sea . The Ashida River originates in Daiwa-chō, Mihara on the Sera Plateau in Hiroshima Prefecture in Japan. It travels for 86 kilometres (53 mi) mostly eastward through eastern Hiroshima Prefecture, and has
28-660: A humid subtropical climate ( Köppen climate classification Cfa ) characterized by cool to mild winters and hot, humid summers. The average annual temperature in Mihara is 14.2 °C (57.6 °F). The average annual rainfall is 1,374.6 mm (54.12 in) with July as the wettest month. The temperatures are highest on average in August, at around 25.9 °C (78.6 °F), and lowest in January, at around 2.9 °C (37.2 °F). The highest temperature ever recorded in Mihara
42-569: A drainage basin of 870 square kilometres (340 sq mi). This river is the primary drainage for the Bingo region. Flood retaining walls were constructed along the banks of the Ashida River in 1928. It was designated as a Class A river in 1967. In a report from 2015, the river was ranked the worst for water quality among the thirteen Class A rivers in the Chugoku region . Since 2012,
56-564: The Kofun period . During the Sengoku Period , Mihara developed as a jōkamachi around Mihara Castle , the stronghold of Kobayakawa Takakage from 1582. Following the 1600 Battle of Sekigahara , Fukushima Masanori was granted Aki Province, which he ruled from Hiroshima Castle ; Mihara Castle has retained as a branch castle. In 1619, his holdings were divided between Fukuyama Domain and Hiroshima Domain , with Mihara becoming part of
70-657: The lower house of the Diet of Japan . Mihara is a key point of transportation in Hiroshima Prefecture, with major transportation infrastructure, such as the Sanyo Shinkansen , Sanyo Main Line , Mihara Port, Hiroshima Airport , and Sanyo Expressway . The city is a center for heavy industry, with metallurgical and chemical-related companies in the coastal areas, and electronic equipment-related companies in
84-482: The Kamo plateau of Higashihiroshima City, flows through the center of the city, and the central urban area flourishes at its mouth. Most of the current central city area is reclaimed land , and steep mountains approach the coastline, while the northern part is a highland area with an elevation of 400 meters or more at the southern tip of Kibi Plateau, and the western part is mostly hilly. Hiroshima Prefecture Mihara has
98-482: The city is 258.14 square kilometres (99.67 sq mi). Mihara is located in south-central Hiroshima Prefecture. It faces the Seto Inland Sea to the south, and part of the coastline forms part of the Setonaikai National Park . The origin of the name of "Mihara" is from the alluvial fans of Yubara, Komagahara, and Konishihara Rivers. The Numata River, a second-class river that originates from
112-408: The disabled. There is also one national elementary school, one national junior high schools. two private junior high schools and two private high schools. The Prefectural University of Hiroshima has a campus in Mihara. [REDACTED] JR West – San'yō Shinkansen [REDACTED] JR West (JR West) - San'yō Main Line [REDACTED] JR West (JR West) - Kure Line A small island off
126-527: The holdings of the Asano clan of Hiroshima. Following the Meiji restoration , the town of Mihara was established on April 1, 1889 with the creation of the modern municipalities system. Mihara merged with the town of Itozaki and several neighboring villages to become the city of Mihara on November 15, 1936. On March 22, 2005, the town of Daiwa (from Kamo District ), the town of Kui (from Mitsugi District ), and
140-507: The inland industrial parks . In terms of agriculture, citrus fruits are grown in coastal areas, and paddy rice and fruit trees are cultivated in mountainous areas. Mihara has 20 public elementary schools, and ten public junior high schools operated by the city government, and three public high schools operated by the Hiroshima Prefectural Board of Education. The prefecture also operates one special education school for
154-588: The town of Hongō (from Toyota District ) were merged into Mihara. Mihara has a mayor-council form of government with a directly elected mayor and a unicameral city council of 25 members. Mihara, collectively with the town of Sera, contributes three members to the Hiroshima Prefectural Assembly. In terms of national politics, the city is divided between the Hiroshima 4th district, Hiroshima 5th district, and Hiroshima 6th district of
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#1732791054534168-402: The university to determine the concentration of the bitterling fish in various portions of the river. Mihara, Hiroshima Mihara ( 三原市 , Mihara-shi ) is a city located in Hiroshima Prefecture , Japan . As of 30 April 2023 , the city had an estimated population of 88,591 in 43253 households and a population density of 190 persons per km . The total area of
182-470: The water quality in the Ashida River has improved significantly, with tributaries showing improvements between 17 and 43 percent. In the 2020s, Okayama University conducted a study of the river to survey the population of Rhodeus suigensis in the river basin. The Japanese Ministry of the Environment had designated the species as extremely endangered . Environmental DNA analysis was utilized by
196-404: Was 36.3 °C (97.3 °F) on 24 July 2018; the coldest temperature ever recorded was −9.4 °C (15.1 °F) on 16 January 2011. Per Japanese census data, the population of Mihara in 2020 is 90,573 people. Mihara has been conducting censuses since 1960. The Mihara area is part of ancient Aki Province and has been settled since prehistoric times. The area has many burial mounds from
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