Geocellular systems can be used to control and manage rainwater surface water runoff either as a SOAKWAY/INFILTRATION or as an ATTENUATION/ STORAGE TANK in a Standalone Project application or for a Sustainable Urban Drainage Scheme (SUD). In the SUD scheme, the Geocellular System is the most cost-effective, rapid construction, and environment-friendly, less footprint with higher capacity of a water take-off and holding compared to the conventional system, less labour and machinery involvement is the most feasible and accepted solution for flood risk in urban areas. Quicker hydraulic intake capacity and greater flood water retention potentiality minimize the flooding and ponding of public areas and allow ample time for municipality engineers to release the excess flood water into the national grid as per their system capacity. The two-component modular nature of HD Geocellular System gives lots of convenience to designers to fit into small spaces, offering flexibility over length, width, and depth that allows engineers to easily construct configurations to match a specific site.