Kai Tak River, previously named as Kai Tak Nullah, is one of the major drainage channels in East Kowloon. Due to urbanisation and extreme weather, drainage capacity of Kai Tak Nullah in the past could not meet the current flood protection standard. Therefore, the Government suggested to carry out drainage improvement works. Upon completion of works, the drainage capacity of Kai Tak River attains the current design standard, so as to mitigate flooding risk along Choi Hung Road. The DSD also took this opportunity to inject various greening and ecological elements into Kai Tak River, thus revitalised it as Hong Kong’s first urban green river corridor. The DSD wishes to share with readers the stories behind Kai Tak River through photographs.