PERENCANAAN NORMALISASI SALURAN AIR DI BELAKANG CITI MALL BATURAJA KECAMATAN BATURAJA TIMUR KABUPATEN OGA KOMERING ULU
Abstract
Planning is a process of determining what you want to achieve in the future and determining the stages needed to achieve it. Watershed planning is a process of determining activities that will be carried out in a directed manner in order to achieve the goal of good watershed management (DAS) within a certain time by considering the potential, opportunities and problems that may arise. To reduce the occurrence of land subsidence, damage to parking lots and the consequences of flooding in the Citi Mall Baturaja stream, East Baturaja District, Ogan Komering Ulu Regency. This causes damage to the Citimall Baturaja parking lot. Therefore, the authors are interested in planning for the Normalization of Waterways behind the Citi Mall Baturaja, East Baturaja District, Ogan Komering Ulu Regency. The processing and discussion method used is by using the formula for calculating river cross-section, calculating river velocity, calculating flow rate (rain discharge/rainfall), calculating channel capacity. The result of the research is that the water channel behind Citi Mall Baturaja is less effective, because there must be a water normalization plan so that the water flow behind the City Mall can be more effective and does not cause flooding. Based on research obtained from existing water flows behind the Baturaja city mall, there needs to be a normalization plan with a trapezoid-shaped drainage channel and soil excavation to widen and deepen the river flow in order to reduce the flood factor, and it costs around IDR 560,089,848.00 - with a length of 265m, a width of 2m and a depth of 1 ,5m.