Tide
Tidal Current
noun
A tides stream is the stream going through the tide. It's the tide or the tidal current.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
荒い潮流に逆らってボートを漕ぐのは簡単ではないが、コテージに戻るにはそれしか方法がない。
It’s not easy to row against the rough tide, but that’s the only way for us to get back to our cottage.