pond, a pool
潴 centers on a body of still water: a pond or pool where water collects and stays.
潴 combines 氵 (water) with 猪, which likely contributes the sound. The character is used for a pond or pool where water gathers.
Water 氵 beside a wild boar 猪: imagine a boar wallowing in a muddy pond, turning the water into a still pool.
For チョ, picture a boar named Cho splashing into the pond: Cho -> チョ, and the water ripples in the pool.
—