河
hé · HSK 2
river
🌊 氵(water) + 可 (phonetic 'ke/he') = river
The 氵radical on the left marks water-related characters. The right side 可 carries the sound, originally close to 'hé'. Historically 河 referred specifically to the Yellow River before broadening to any river.
河 — water radical 氵 + 可 (kě, phonetic)
河 is a classic semantic-phonetic compound: 氵 (water) gives the meaning 'river', while 可 supplies the sound. Originally 河 referred specifically to the Yellow River, and only later broadened to mean rivers in general.