Sponge City Hefei - City Terraces, Hefei/Anhui

The city terraces give the centre of the airport city a lively and representative face to the dam. They bring the urban character and the mix of functions right down to the water's edge and create a versatile waterside edge with a promenade, shady urban trees, spacious open terraces, a bathing island, a marina for sailing and rowing boats, viewing platforms and flexible areas for events and catering.
The shore area is divided into an elevated, flood-safe area with a pedestrian walkway and cycle path and a lower, temporarily flooded shore zone close to the normal water level of the dam, which opens up a wide range of opportunities for interaction with the water. The raised quay and promenade areas offer sweeping views along the water's edge, while the traffic-calmed riverside road creates space for markets and sporting events. Sponge city elements such as retention soil filters and rainwater overflow basins are integrated into the waterfront design as green inlays. Lush rain gardens compensate for the sealed surfaces and also enable effective buffering and natural purification of the rainwater produced.
The northern start of the area is formed by a bathing island in front of the dam with heated swimming pools, which allow for an extended season of use. In the colder months, the island can be used as a versatile event venue. The city terraces combine urban life and water space to create an attractive and multifunctional meeting place.