あの辺りは川底が深いので気を付けてください。

The river is deep around there, so be careful.

この川は、川底にかなりのすながたまってしまっています。

There's a lot of sand on the bed in this river.

「サーモンはゴールデンウィーク期間中何してたの？」「結婚指輪を川で無くしちゃって、ずっと探してたの。三日もかかったけど、ようやく川底に沈んでいる指輪を見つけたわ。」

"What did you do during Golden Week, Salmon?" "I lost my wedding ring in a river, so I was looking for it. It took me three days, but I finally found it buried in the riverbed."