水はここがいちばん深い。

water (esp. cool, fresh water, e.g. drinking water); fluid (esp. in an animal tissue); liquid; flood; floodwaters; water offered to wrestlers just prior to a bout; break granted to wrestlers engaged in a prolonged bout

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

here (place physically close to the speaker, place pointed by the speaker while explaining); this place; these last (followed by a duration noun and a past sentence: time period before the present time of the speaker); these next ... (followed by a duration noun and a non past sentence: time period after the present time of the speaker); the next ...

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

number one; first; first place; best; most; game; round; bout; as a test; as an experiment; by way of experiment; by way of trial; tentatively; song (e.g. in Noh); piece

deep; profound; dense; thick; close (relationship); intense; strong; late