This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
潒 combines 氵 (water) with 象, but the exact historical development and original meaning are uncertain.
The left side is water 氵, and the right side is 象 (elephant). Picture an elephant wading through water, but the meaning remains unclear.
For トウ, imagine a toe dipping into the water beside the elephant: toe -> トウ, though the kanji's meaning is uncertain.