PENGELOLAAN DAN DESAIN SISTEM DRAINASE DALAM PENANGGULANGAN GENANGAN BANJIRBERBASIS SISTEM INFORMASI GEOGRAFIS

Abstract

This research aims to manage and design drainage system, so it may work effectively in handling flood
inundation based on the existing condition. This research has been carried out by collecting primary data and secondary
data. This research is processed by using Microsoft Office Excel to know the magnitude of rainfall in the next five years
period and the big of channel discharge planned. The results of this study obtained the maximum quantity in the fiveyear
period (Q5) of 0.688 m3/sec and for the design of the channel used three types of channels including the I-type
secondary channel with the channel bottom width (b) = 0.40 m, height (H) = 0.50 m, (w) = 0.40 m, secondary channel
type II with channel bottom width (b) = 0.40, height (H) = 0.50 m, wavelength (w) = 0.40 m and a tertiary channel type I
with base width of channel ) = 0.20 m, height (H) = 0.25 m, high guard (w) = 0.20 m.