Yueyang is a growing city in the chinese province fo Hunan. In cooperation with hydrology, watermanagement and water ecology experts as well as landscape architects a masterplan is developed. The aim is a new adjustment of urban and open space developement in the course of water quality improvement. The masterplan analyses the spatial and programmatic potentials of the Nanhu (lake) and the sorrounding build-up and open space structures and developes them as a blue-green infrastructure. That improves the city's interconnectedness and the accessibility of green spaces. A catalogue of sponge city strategies proposes transferable concepts for a structure related integration of sponge city principles. The blue-green-black masterplan merges the strategies and delivers design approaches for different types of waterfronts and city profiles.