REDUCING RUN-OFF WITH USING GREEN INFRASTRUCTURE POTENTIAL AND ACTOR PERCEPTION THROUGH GREEN INFRASTRUCTURE DEVELOPMENT

• Main Author: ADIANTI (NIM: 25413033), PUTRI
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/23726
• Institution: Institut Teknologi Bandung

Land use activity which change the type or kind of land use affected the ability of the land to absorb the water. If the ability to absorb is decreasing, it can cause a problem in the downstream area, which is the fluctuation of the runoff discharge if the heavy rainfall is coming and there’s only a little amount of water that can absosrb. Decreasing the runoff is one of the solution to prevent flood. As done by the U.S Environmental Protection Agency (EPA), EPA is develop a model called The System for Urban Stormwater Treatment and Analysis Integration (SUSTAIN). This model was made to give the best decision to choose and placed green infrastructure as a tool to reduce runoff in the watershed. The result of SUSTAIN model will different, if it applied in many different place. It happen because every area has a different characteristic in terms of the topography of the river, land use pattern, and the interest of the stakeholders. In order that the result of the SUSTAIN model can be applied in an area, the model require a perception from the bureaucrat, considering that bureaucrat has a role in decision making. <br /> <br /> <br /> <br /> The purpose of this research is to explain what kind of green infrastrucutre that can reduce runoff and to identify the perception of bureaucrat about green infrastructure potential development. Analysis method that used in this research is land suitability using SUSTAIN. Qualitative analysis is used to see the result of perception from the bureaucrat and the result of runoff analysis using Soil Conservation Service (SCS) method. <br /> <br /> <br /> <br /> The result of analysis using Best Management Practice (BMP) Sitting Tool in SUSTAIN model showed that there’s four kind of green infrastructure that suitable with the physical condition of Cisangkuy Sub watershed which are Infiltration Basin (7037.22 Ha), Vegetated Filter Strip (1511.12 Ha), Dry Pond (839.57 Ha) and Bioretention (418.58 Ha). The result of bureaucrat perception <br /> <br /> <br /> <br /> analysis showed that only two kind of green infrastructure that can be applied in Cisangkuy Sub watershed which are Bioretention (43.75 Ha) and Infiltration Basin (5974.32 Ha). The development of those two type is considering the prone to ground movement area, settlement area and built area. Calculation result using green infrastructure showed that it can reduce runoff up to 19.1%. <br /> <br /> <br /> <br /> The output from the SUSTAIN model is green infrastructure. The model was initiated by U.S EPA. It has a general approach, so it can be used in many area and many planning scale as a compliment to decision maker. It is highly recomended if every Rencana Tata Ruang Wilayah (RTRW) kabupaten/kota include a green infrastructure plan in it. RTRW is arranging the distribution and area where green infrastructure is applied