Heavy rainfall in Mumbai leads to Powai Lake overflowing early Wednesday, according to NDTV. The outlet reports that Powai Lake begins to overflow with its stated capacity at 545 crore litres. The lake is described as primarily used for industrial purposes, and the overflow is attributed to the volume of water received during the ongoing downpour. The report presents the overflow as a direct consequence of the heavy rains hitting the city, with the lake reaching and exceeding its available capacity. The story is framed as an incident related to rainfall and water levels rather than a specific cause such as mechanical failure or upstream actions. It highlights the operational significance of Powai Lake and that the overflow occurs when inflows rise beyond the lake’s handling capacity. No additional details are provided in the source text about impacts on residents, evacuations, or any damage. The information focuses on timing, capacity, and the industrial use of the lake as rainfall conditions worsen.