In Singapore reservoirs, autonomous drones take to the sky to track water quality Enterprise The autonomous drones can take off, fly on a pre-planned path and land on their own. PHOTO: PUB handout. Autonomous drones will be hovering in the skies over six reservoirs in Singapore from the end of this month, as part of an effort to better monitor water quality and water activities. Flying “beyond visual range” of a human operator, the unmanned drones will be packed with remote sensing systems and cameras for near real-time video analytics. They will initially be deployed at MacRitchie and Ma...