T Tataka Puri Housing is located on Jl. Raya Curug, Curug, Tangerang is a residential area that is being developed but, in its development, it is necessary to pay attention to the dangers of flooding and inundation that have occurred in the area around Tataka Puri. The Tataka Puri area has a land area of 107.26 ha with a limited channel outlet point leading to the Jatake River. Based on the urgency of the problem, an ecodrainage system will be applied that can work not only to drain rainwater into water bodies but to reduce rainwater runoff. The application of ecodrainage is intended to reduce regional flood discharge in preventing inundation and flood disasters. In this study, 3 scenarios of the drainage system will be applied, in which scenario 1 is the application of conventional drainage channels, scenario 2 is the application of a combination of drainage channels and rainwater harvesting, and scenario 3 is the application of a combination of drainage channels and retention ponds. The application of an ecodrainage system with rainwater harvesting is proven to be able to reduce the area's flood discharge by 59.16% and the retention pond can reduce the area's flood discharge by 88%.