Meaning of 河 in Japanese

この川はあの川の３倍長い。
This river is three times longer than that one.

信濃川と阿賀野川ではどちらが長いですか。
Which is longer, the Shinano River or the Agano River?

この船は大きすぎて運河を通れない。
This ship is too big to pass through the canal.

河川は豪雨で氾濫しました。
The rivers were flooded by the heavy rain.

私は学校で日本文学の英語訳、特に漱石の『吾輩は猫である』や『心』、芥川の『鼻』や『河童』を楽しく読んだ。
At school I had enjoyed reading Japanese literature in English translation, in particular Soseki's I am a Cat and Kokoro, and Akutagawa's The Nose and Kappa.