Redesign of Drainage Channels Soekarno Hatta Road Section in Jatimulyo Village Lowokwaru District, Malang City

Abstract

The purpose of this study was to determine the capacity of the existing channels on Jalan Soekarno Hatta. This study's methodology is to use the Rational Q = 0.00278.C.I.A, technique. According to the calculation results, the CIA uses hydrological analysis, land use maps, and rainfall data. During the five-year return period, the design flood discharge of Jalan Soekarno Hatta fluctuated. Channels 1 to 5 have discharge rates of 0.062 m/second, 0.139 m/second, 0.275 m/second, 0.219 m/second, and 0.241 m/second, respectively. The drainage channels are channel 1 of 0.067 m/second, channel 2 of 0.151 m/second, channel 3 of 0.297 m/second, channel 4 of 0.237 m/second, and channel 5 of 0.260 m/second. Throughout the 10-year return period, the discharge volume fluctuates. Drainage channels in Malang City's Soekarno Hatta Street area vary in capacity. We cannot check Channel 3 due to its limited capacity, but Channel 1 can manage floodwater flow. There is insufficient capacity in channels 2, 4, and 5. The dimension rearrangement has consequences for Channels 2, 3, 4, and 5. Channel 2 has a width of 1.50 meters and a height of 1.20 meters. Channels 3, 4, and 5 all have dimensions. Channel 5 has dimensions of 1.50 meters x 1.20 meters in width and height are 1.50 meters by 1.20 meters. Widening and raising the drainage channels are two aspects of the channel redesign that ensure that the channel capacity is sufficient to manage flood flow.