Agano (river)

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Agano
Aga, Ōkawa
View of the river

View of the river

Data
location Japan
River system Agano
source in Minami-Aizu am Berg Arakai
37 ° 2 '38 "  N , 139 ° 38' 48"  O
muzzle in Niigata in the Sea of ​​Japan Coordinates: 37 ° 57 ′ 45 "  N , 139 ° 7 ′ 44"  E 37 ° 57 ′ 45 "  N , 139 ° 7 ′ 44"  E
Mouth height 0  m  TP

length 210 km
Catchment area 7710 km²
Drain MQ
 451 m³ / s

The Agano ( Japanese 阿 賀 野 川 , -gawa , in Fukushima also Aga ( 阿賀川 , -gawa ) or Ōkawa ( 大川 )) is a river in Japan .

It flows from the Fukushima Prefecture in the Niigata Prefecture . It is 210 km long and has a catchment area of ​​7710 km².

The source of the river is on Mount Arakai on the border of the Fukushima and Tochigi prefectures . It flows north and is fed by the Nippashi ( 日 橋 川 , -gawa ) from Lake Inawashiro and then from the Tadami in the Aizu Basin . Then it turns west and falls into the Sea of ​​Japan . At the mouth it has the highest flow rate of all Japanese rivers with 451 m³ / s.

In the 1960s, the Shōwa Denkō company polluted the river with mercury , causing Niigata Minamata Disease (Niigata Minamata Disease ( 新潟 水 俣 病 , Niigata Minamata-byō ), also known as the second Minamata Disease ( 第二 水 俣 病 , Dai-ni Minamata-byō ) called).

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