Concept

Koga (Ibaraki)

Résumé

is a city located in Ibaraki Prefecture, Japan. , the city had an estimated population of 138,446 in 56,097 households and a population density of 1120 persons per km2. The percentage of the population aged over 65 was 28.98%. The total area of the city is . Koga is located in the extreme southwestern corner of Ibaraki Prefecture. Located almost in the center of the Kanto Plain, the city is very flat. The Tone River flows eastward in the southern part of the city and the Watarase River flows through the west and joins the Tone River north of the Tonegawa Bridge.The altitude of the northern part is slightly higher than that of the southern part, and the rivers that flow through the city flow from north to south except for the Tone River. Ibaraki Prefecture Yūki Bandō Sakai Goka Yachiyo Saitama Prefecture Kuki Kazo Tochigi Prefecture Oyama Tochigi Nogi Koga has a Humid continental climate (Köppen Cfa) characterized by warm summers and cool winters with light snowfall. The average annual temperature in Koga is . The average annual rainfall is with September as the wettest month. The temperatures are highest on average in August, at around , and lowest in January, at around . Per Japanese census data, the population of Koga peaked around the year 2000 and has declined slightly since. Koga was settled in the Jōmon period and already known as a ferry port on the Watarase River in the Nara period and is mentioned in the Man'yōshū. During the Heian period it was the site of an iron smelter and kilns for production of ceramics and roof tiles and was one of the largest centers for iron production in eastern Japan . During the Muromachi period it was the location of the Koga kubō, a secondary government created by the Ashikaga shogunate to rule eastern Japan. In the Sengoku period, it developed into a castle town and during the Edo period became the seat of the daimyō of Koga Domain under the Edo period Tokugawa shogunate and a station on the Nikkō Kaidō highway. The town of Koga was established on April 1, 1889, with the creation of the modern municipalities system.

Source officielle

https://fr.wikipedia.org/wiki/Koga_(Ibaraki)

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