Makomanai (river)

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Makomanai
the Makomanai in Minami-ku Municipality

the Makomanai in Minami-ku Municipality

Data
location Japan
River system Ishikari
Drain over Toyohira  → Ishikari  → Sea of ​​Japan
source Bankei-numa,
Minami-ku (Sapporo)
42 ° 52 ′ 50 ″  N , 141 ° 15 ′ 36 ″  E
Source height 913  m  TP
muzzle Makomanai Park , Minami-ku Coordinates: 43 ° 0 ′ 14 "  N , 141 ° 20 ′ 41"  E 43 ° 0 ′ 14 "  N , 141 ° 20 ′ 41"  E
Mouth height 62  m  TP
Height difference 851 m
Bottom slope 41 ‰
length 21 km
Catchment area 37 km²
Big cities Sapporo

The Makomanai ( Japanese 真 駒 内 川 , Makomanai-gawa ) is a river on the Japanese island of Hokkaidō . It is 21 km long and has a 37 km² catchment area , which is completely within the urban area of Sapporo . The Makomanai is a right tributary of the Toyohira , which in turn flows into the Ishikari .

description

The river has its source in Bankei-numa ( 万 計 沼 ), a small pond on the northern slope of the Soranuma-dake mountain, at an altitude of 913  m  TP. Initially, it flows northeast as a mountain stream. Shortly before the middle part of the river, known as Tokiwa ( 常 ), the gradient becomes noticeably smaller. Here the Makomanai changes its direction of flow to the north and crosses a valley around 200 meters wide. The confluence with the Toyohira is located in the urban area at Makomanai Park .

In the Ainu language , Makomanai means "back river". Edwin Dun , an American " foreign contractor ", began in 1876 on the lower reaches of the Makomanai with the construction of a model farm, with which he established modern methods of dairy farming and cattle breeding on Hokkaidō. The valley around Tokiwa remained undeveloped for a long time. Measures in the flood led in the 1960s to a straightening of the river. The lower part of Tokiwa has now been built over with a housing estate. The estuary is a spawning area for Masu salmon .

Web links

Commons : Makomanai  - collection of images, videos and audio files

Individual evidence

  1. ↑ Education Committee (kyōiku iinkai) of the city of Sapporo (ed.): お 雇 い 外国人 (o-yatoi gaikokujin) . Hokkaidō Shimbunsha, 1981.
  2. ↑ Education Committee (kyōiku iinkai) of the city of Sapporo (ed.): 川 の 風景 (kawa no fūkei) . Hokkaidō Shimbunsha, 1988.
  3. ↑ Asuka Okada: 真 駒 内 川 に お け る 治水 事業 ( Memento from June 28, 2005 in the Internet Archive ), 2000.