To protect the west parts/lands of the Waterfront area from Don River flood, there is a four-meter clay substructure reshapes the river's floodplain, helping to safely Direct flow south to the lake through a storm water treatment facility.

a. Direct flow south to the lake through a storm water treatment facility.
b. Reserve stormwater in huge reservoirs first and then gradually release to the lake.
c. Direct flow south to the lake when water surges.