The park was built on the hillside between Tsui Ping Road, Hiu Kwong Street and Hiu Ming Street, in memorial to the deceased of the disastrous flooding on 18 June 1972 (also known as June 18 flooding, in Chinese: 六一八水災), which took 71 lives when the hill slope adjacent to the park failed.

[2] The collapsed slope was rebuilt with a gentler gradient and improved drainage infrastructure to ensure stability.

The Urban Council originally planned to build a garden along with some recreational facilities on the site, including a badminton and basketball court.

But owing to the gentler gradient, the reconstructed slope occupied more space than the previous one that collapsed and the recreational elements of the memorial were dropped in favour of a simpler garden.

A 560-square-metre section of land next to Kwun Tong Maryknoll College was added to the memorial park in the early 1980s.