The only good thing about Monday's downpour was an overflowing Tulsi lake, but Mumbaikars need not be too excited about it. The water stored by the Brihanmumbai Municipal Corporation (BMC) in the catchment areas of city's lakes has just reached 38 per cent of the total required stock of 14.47 lakh million litres. Last year, by this time, the civic body had stored almost half of the total quantity. Though Mumbai has started receiving good amounts of rain, the civic officials still have a long way to go in saving up for the city's water requirements.