涝
lào · HSK 7
flooded
🌊 氵(water) + 劳 láo (toil) = water that ruins your toil = a flooded field
涝 — water radical 氵 + 劳 (toil/labor)
涝 is a semantic-phonetic compound. The water radical 氵 supplies the meaning — flooding or waterlogging — while 劳 (láo, toil) provides the sound, shifted in tone to lào. Originally it referred to fields ruined by excess water, and today still means flood or waterlogged.