This is the 14493rd most frequent Russian word.
падению
"Падению" means "to the fall" or "to the decline" in English.
In this context, 'падению' refers to a decrease or lowering of water levels, expressing a process or occurrence.
Учёные уделяют особое внимание падению уровня воды в реках.
Scientists pay special attention to the fall of water levels in rivers.
Here, 'падению' is used to describe the action of falling, literally descending from a height.
Он настойчиво готовится к падению с большой высоты на парашюте.
He is persistently preparing for a fall from a great height with a parachute.
In this example, 'падению' metaphorically represents the demise or decline of the Roman Empire in a historical context.