Canal
noun
It can carry a river. It's a canal.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well. The か goes to が, probably while floating down said canal.
冬には運河の上でスケートができますよ。
You can skate on the canal during the winter.