Water level in canals got back to normal two day after the news of exceptional low tide reached newspapers and tv; few days ago there was even a little bit of acqua alta.
Unfortunately in many reports that I've read on this phenomenon, no explanation of how tides work has been provided: The lagoon is not a lake, the water level depends on tides which, in turn, depend on atmospheric pressure, direction and intensity of the winds and the position of the moon; The effect of the rain is practically negligible.
We are still in the middle of a serious drought: lake Como, lake Garda and all the main rivers are suffering, but the situation of the canals in Venice is normal right now ( I live in Venice).