PEMANENAN AIR HUJAN DAN PREDIKSI ALIRAN LIMPASAN DARI ATAP DAN HALAMAN RUMAH SEBAGAI ALTERNATIF PENYEDIAAN AIR BERSIH

Abstract

Rain water is a potential source of water as a source of clean water for households if accommodated and stored properly. This paper attempts to illustrate the results of calculations on the potential of rain harvest and surface runoff prediction using android applications from rooftops and home yards as an alternative to the provision of clean water. The method used in this study is to observe the amount of rain that is harvested in an integrated rain harvest at Bukit Sejahtera Palembang. Rainfall prediction that falls in all catchment area using android application (runoff prediction). In the event of moderate rain for a long time and lasted several days during the rainy season accommodated the amount of rainwater in the whole rain harvest area around 50-100 m³, while during the dry season the amount of rainwater accommodated about 5-10 m³ or equivalent with rainfall 30 mm per day. The calculation result of maximum runoff rate in rainy season falling from roof and land is 31 liters per second, while in dry season less than five liters per second. The prediction results are plausible and evident from the shelter on the concrete tank is never dry throughout the year, so also the fish pond is never dry throughout the year, which means with proper rain harvesting and storage the rainfall harvesting house experiences never dry and never flooded. There are a number of recommendations that must be met if rainwater is harvested from the roof and the yard as alternative provision of clean water in the cities.