ENVIRONMENTAL FRIENDLY DRAINAGE NORTH BANDUNG REGION - UPPER CIKAPUNDUNG WATERSHED IN BANDUNG BASIN

• Main Author: Pradiko, Hary
• Format: Dissertations
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/44458
• Institution: Institut Teknologi Bandung

Changes in motion and distribution of water are affected by their extremities rain and land conversion. Precipitation becomes more extreme than ever before, resulting in a change in the hydrological regime. Conversion of land from less impermeable be watertight, especially in urban areas, will affect the movement of water on earth. Efforts have been done, including by technical and non technical measures. But the results are not ideal and still has weaknesses. Therefore, it required an effort to eliminate / reduce the adverse effects of excess runoff through increasing infiltration into the soil, maintaining the hydrological conditions of natural and the existing of drainage infrastructure functions (channels), managing the land use and the upstream to downstream watershed for the community’s benefit and the environmental sustainability, which is known as environmentally friendly drainage. Dissertation research is devoted to researching environmentally friendly drainage in residential areas / urban (case study Cikapundung Hulu Watershed - North Bandung Region). This research was conducted in three stages. The first stage is to kolekting data and researching the primary components of hydrological cycle regime (rainfall and discharge) in the North Bandung Region (KBU) in particular Cikapundung Watershed – Upper Citarum associated with the rate of land conversion. The second stage is to review the effort in controlling runoff in addressing overflow and pools in residential areas / urban Upper Cikapundung Watershed - KBU through analyzing the conservation index of Upper Cikapundung Watershed using spatial data and the scoring - weighting method, applicating the Regulation of the Minister of Public Works No. 12 / PRT / M / 2014 concerning drainage settlement / urban areas with a rational method, applicating the environmentally friendly drainage using Sunjoto and SNI methods: individual and communal scale, analyzing the storm water control factors using a rational method, analyzing the contribution of artificial recharge in the rain water and runoff/drainage control policy through the implementation of the Regulation of the Minister of Public Works No. 12 / PRT / M / 2014 using a rational method in order to maintain the sustainability of the drainage infrastructure utility function, and simulating the storm water runoff control using SWMM models. While the third stage is to conduct policy analysis to control storm water runoff that is adapted to the policy hierarchy (national, provincial, district / city, community) in North Bandung Region. The results of this iv dissertation research show that: in the Cikapundung watershed has been an increase in the maximum discharge in the upstream (Maribaya Station) and downstream (Dayeuhkolot Station) watershed caused by the increase in distribution of maximum rainfall, IDF, and land conversion (increased runoff coefficient); Flood plan discharge for infrastructure planning drainage increased due to higher rainfall intensity and land conversion to settlement area that occurred in Upper Cikapundung Watershed - KBU causing degradation of drainage infrastructure functions (the occured discharge exceeds the flood plan discharge of drainage infrastructure); the functions of settlement / urban drainage infrastructure sustainable by implementing the strategies of environmental friendly drainage (zero runoff concept) through controlling land cover types, coverage land ratio (KDB / BCR), rainfall and climate, slope, geology and soil types, and handling runoff methods: individual and communal scale; rainwater runoff control policy using the Regulation of the Minister of Public Works No. 12 / PRT / M / 2014 in residential areas / urban has not been able to cope with inundation / flooding and its needs to be supported by the application of artificial recharge (the zero runoff concept) so that the function of the drainage infrastructure and natural resources sustainable; due to weak policies and enforcement, it is necessary to re-scenario the control policy of space utilization by controlling runoff and the environmental at KBU through several policy options in the aspects of technological, economic, social, and institutional - national, province, district / city, and community / society scale.