派は川せん

noun

distributary; branch (of a river)

A river branch that diverges from the main stream and does not rejoin it, as opposed to a tributary (支流). Used in geography and hydrology.

See also: 分流

• この地ち域いきでは、本ほん流りゅうからいくつかの派は川せんが分わかれている。

  In this area, several distributaries branch off from the main stream.

• 派は川せんは河か口こう付ふ近きんでよく見みられる地ち形けいだ。

  Distributaries are a common landform near river mouths.