PERENCANAAN TEKNIS REHABILITASI SALURAN DRAINASE DI KELURAHAN BELIMBING

Abstract

Gondanglegi District is one of the districts in Malang Regency. Gondanglegi District has an area of 79.74 km2. In the Gondanglegi District area, there are 7 (seven) drainage channels that cannot accommodate the water discharge due to frequent flooding with high rainfall intensity. The drainage channel in the Gondanglegi sub-district is an old building itself and needs to be evaluated and improved. Calculation of planned rainfall uses rainfall data at three rain gauge stations, namely gondanglegi, Blambangan Station, and Karangsuko station. That is what this study wants to know about the design rainfall, design flood discharge, existing discharge, and the dimensions of the design channel in the
drainage channel area in Gondanglegi District. This study uses Arcgis 10.3 software. The results of this study indicate that channel 2A has dimensions of B (channel width) 0.8 m, H (channel height) 0.5 m, and Qeks (channel flow rate) 2.25 m3/s. Therefore, channel 2A can accept drained drainage.

Keywords: Arcgis 10.3, Channel Dimensions, Gondanglegi Distric.