廃はい川せん

noun

abandoned river; dried-up river; filled-in river

Civil engineering term for a river that has been intentionally diverted or filled in, leaving a dry or reclaimed channel.

• この地ち域いきには、かつての廃はい川せんが遊ゆう歩ほ道どうとして整せい備びされている。

  In this area, a former abandoned river has been turned into a walking path.