Model (above) shows how the Plover Cove integrated water scheme fits into the New Territories landscape. Bright red areas show where soil is being obtained for the dam that will block off the mouth of Plover Cove, yellow areas show where sand is being obtained, and black area is for dumping. Plover Cove is shown in panorama (above right). The 125 ft dam (below) at Tai Po Tau is known as a fabridam and is inflatable. It is made of nylon and, filled half with air and half with water, can be blown up or let down as needed to control the flow of water. Machine (right) sprays concrete on walls of supply tunnel leading to reservoir.