Analisis Hujan, Debit Puncak Limpasan dan Volume Genangan di Sekitar Gedung Graha Widya Wisuda - FEMA Kampus IPB Darmaga Bogor

Abstract

IPB Darmaga’s Campus is a region that experienced flood when heavy rain occurred, especially around Graha Widya Wisuda building, Ramin Street, and Kamper Street (FEMA)’s region. This research aims to acquire and analyze rainfall, topography, and landuse data for planning data of zero-runoff drainage system which are peak runoff and volume of puddle data. Based on goodness-offit tests using Smirnov-Kolmogorov and statistical parameter analysis, it is acquired that Gumbel distribution is the best. Maximum daily rainfall (R24) for 2 year return period is 125.68 mm. Topographical condition’s survey produces 3 Water Catchment Area (WCA) with 13 Sub WCA. Results of peak runoff calculation are 0.278 m3/s for Sub WCA 1A, 0.385 m3/s for Sub WCA 1B, 0.297 m3/s for Sub WCA 1C, 0.415 m3/s for Sub WCA 2A, 0.558 m3/s for Sub WCA 2B, 0.160 m3/s for Sub WCA 2C, 1.095 m3/s for Sub WCA 2D, 0.351 m3/s for Sub WCA 2E, 1.069 m3/s for Sub WCA 2F, 2.162 m3/s for Sub WCA 2G, 0.218 m3/s for Sub WCA 2H, and 0.512 m3/s for Sub WCA 2I. The greatest volume of puddle for 1A and 2G Sub WCA are 401.82 m3 and 395.53 m3.