Assessment of Drainage System in Bangetayu Kulon Village, Genuk District, Semarang City

The drainage system is infrastructure related to urban spatial planning and must be considered. This planning was carried out in Bangetayu Kulon Village, Genuk District, Semarang City, which consists of residential, commercial and other areas. Bangetayu Kulon sub-district has inundation problems at several points due to a lack of channel capacity caused by high sedimentation at the bottom of the channel, vegetation, rubbish and changes in land use. In evaluating the drainage system, a 5 year return period hydrological analysis will be carried out using EPA SWMM 5.1 software. Apart from that, a hydraulic analysis will also be carried out which begins with an analysis of existing conditions, then applies SUDS and continues with evaluation through channel normalization in the form of sediment burrowing and changes in channel dimensions. The concept of implementing SUDS in the Bangetayu Kulon Village drainage system is the application of Permeable Pavement on road areas that do not yet have paving pavement of 30,877 m2 and a Retention Pool with a storage capacity of 10,560 m3. This plan succeeded in reducing flooding by 52.06% from initially 147.82 x 106 L to 70.84 x 106 L.