Eastern District in the northeastern part of Hong Kong Island was among the worst hit by heavy rain and flooding on Wednesday.
In Quarry Bay, the roof of a multi-storey carpark at Kornhill Garden was swamped with muddy water as this year’s first black rainstorm warning was hoisted over the city, hk01.com reports.
Video footage posted on social media showed a “waterfall” cascading down the slope of a hill beside the residential property, while rainwater quickly inundated several floors of the car park.
It was reported that floodwaters reached as high as one meter on one of the floors. By 3 p.m., the water in the carpark had receded, but the floor remained muddy and slippery.
Eastern District Councilor Chan Kai-yuen, who is an engineer by profession, said the rain was quite heavy and the drainage system was apparently clogged by leaves and other objects.
He said slope maintenance work at the site, including day-to-day drainage and cleaning work, is the responsibility of the management of Kornhill Garden.
Eastern District covers Fortress Hill, North Point, Quarry Bay, Shau Kei Wan, Heng Fa Chuen, Chai Wan and Siu Sai Wan.
Engineer Kong Shui-sun, head of the Civil Division of the Hong Kong Institute of Engineers, said a flood prevention system should be in place at the slope in question and the residential property should also have its own drainage system.
If both sets of measures functioned normally, flooding in the area should not have taken place.
The government said 19 flooding reports were received between 9:55 a.m. and 6 p.m.
The Drainage Services Department said most of the reported incidents were traced to nullahs that failed to discharge flood water in their full capacity due to blockage or siltation, Ming Pao Daily reported.
A taxi parked along Shau Kei Wan Main Street East was quickly flooded amid the downpour and drifted down a flight of stairs, forcing the driver to abandon the vehicle.
The Hong Kong Observatory issued the amber rainstorm warning at 6:40 a.m., elevated it to a red signal at 9:15 a.m. and to a black warning at 11:30 a.m.
More than 70 millimeters of rainfall was recorded across Hong Kong during the period.
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