DRAINAGE CHANNEL CAPACITY ANALYSIS USING THE SWMM PROGRAM IN GRAHA YOUTEFA HOUSING
The construction of good drainage in residential areas is needed to channel runoff water to reduce the potential for puddles to arise which can lead to flooding. Graha Youtefa's housing is located in the Heram District, Yabansai, and Jayapura City. Currently, the drainage channels in the housing complex cannot accommodate runoff that occurs during high-intensity rains. One solution to help evaluate urban drainage systems is to use runoff modeling, namely the SWMM software. After analysis, due to the catchment area, there is a quite large runoff with a capacity of 0.871309824 runoff discharge in the drainage channel at Graha Youtefa while the channel capacity is only 0.002910235. After the simulation using SWMM application, the result shows that the planned rainfall of 147.10 mm and rain intensity at peak hours of 56.67 mm/hour. The simulation results show that out of 9 channels, there are 7 channels that need to be repaired. Improvement is only needed for the depth of the channel without changing the width of the channel. From each repaired channel the depth will be added as much as 10cm. The settings for re-simulation using the dimensions of the repaired channel are not found to be overflowing channels, so the dimensions of the repaired channels are considered sufficient.
Drainage, Runoff, SWMM Application