Sarra Rahmadani, Rumilla Harahap, Siti Zulfa Yuzni, Cut Meuthia Rani, Naufal Tinov, Jovan Anugrah Waruwu, Siti Sari Rahmadani
. The Deli River, in North Sumatra, is often hit by flood disasters, so studies are needed to understand the flood discharge. The aim of this research is to analyze the Deli River flood discharge using the Nakayasu Synthetic Unit Hydrograph (HSS) model. Hydrological data which includes rainfall and water discharge is used as input material to model the response of river flow to rain events in the Deli River area, especially Medan Maimun District, for a period of 2, 5, 10, 25, 50 years from 2014. The results of the study show that discharge the HSS Nakayasu model flood is Q 2: 383,403 m 3 /sec, Q 5: 431,259 m3/sec; Q 10: 461.897 m3/sec; Q 25: 499.823 m3/sec; Q 50: 527,620 m3/sec; Q 100: 555.149 m3/sec. © 2024 Institute of Physics Publishing. All rights reserved.
Department of Building Engineering Education, Medan State University, Indonesia; Department of Environmental Engineering, Institute of Health and Technology, Jakarta, Indonesia
