摘要
In May 2021,drones began hovering over MacRitchie Reservoir,which is unusual in Singapore,where the airspace is strictly regulated.Water storage reservoirs are very important for the water-scarce country.Like MacRitchie,the country’s other 16 reservoirs are also surrounded by dense tropical rain forests.The beautiful scenery has made them popular leisure destinations for Singaporeans.Regular patrols are necessary to monitor water quality and algae growth and prevent illegal fishing.According to an estimate from PUB,Singapore’s National Water Agency,it takes 7,200 working hours a year to complete these tasks in six of the reservoirs,including MacRitchie.Last year,the government set up a remote sensing system equipped with drones and cameras in each of the six.
