湛 is a Chinese hanzi, listed here under the keyword “deep”. It is built from 氵 (water) and 甚 (great extent). It appears as a component in 1 other character in this index.
On KumiJi Glyph Explorer, open the parts search and type “water” + “great extent”. 湛 is among the results, together with every other character containing the same shapes.
Open 湛 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.