Rainwater Harvesting-Based Conservation Model in Urban Flood Control: A Study at SMPN 24 Semarang

When the rainy season arrives, one thing we often hear is flooding in the lower regions. This can happen if land on higher plains loses part of its function due to several reasons, development that does not pay attention to green open space, for example, also because rainwater is not captured and reused so that water flows directly to lower plains. Rainwater harvesting is a conservation and technological method used to collect and store rainwater from the roofs of buildings, ground surfaces, roads or hills. One of the methods of harvesting rainwater that collects and stores it at the ground level is infiltration wells and biopore infiltration holes. The research method used is qualitative descriptive. The results of research in the field show that the method of harvesting rainwater through a roof system, namely capturing rainwater in gutters which is then stored in a water storage reservoir, is very suitable to be applied to SMPN 24 Semarang, considering that around the building there are gardens and gardens that require watering, so that the water collected can be used to water plants. Next is the biopore infiltration hole which has the benefit of absorbing water and can also compost organic waste into compost so that the plants in the garden and gardens are more fertile.