Open AccessANALISIS DEBIT PUNCAK PADA DAS AIR MANNA BAGIAN HILIR MENGGUNAKAN PENDEKATAN METODE HIDROGRAF SATUAN SINTETIS (HSS) SNYDER DAN HEC-RAS 5.0.7
Author(s) -
Khairul Amri,
M. Hafidz Ramadhan,
Muhammad Fauzi
Publication year - 2021
Publication title -
jurnal teknik sipil cendekia
Language(s) - English
Resource type - Journals
eISSN - 2723-6552
pISSN - 2723-3375
DOI - 10.51988/jtsc.v2i2.32
Subject(s) - hydrograph , hydrology (agriculture) , flooding (psychology) , watershed , environmental science , geology , geotechnical engineering , geography , archaeology , computer science , flood myth , psychology , machine learning , psychotherapist
Floods is a disaster which is one of the causes of failure of watershed managemen. High rainfall is also a factor in flooding. As a result the river cross section is not able to accommodate the flow of water and cause the river to overflow. This research was conducted to determine the amount of peak discharge Sub-DAS Air Manna Bagian Hilir and identify areas prone to flooding. This study uses a synthetic unit hydrograph (HSS) Snyder and HEC-RAS 5.0.7. Hydrological analysis results obtained from the peak discharge at Sub-DAS Rindu Hati using HSS Snyder for a return period of 2, 5, 10, 25, 50 and 100 yearsthat is 743,627 m3/sec, 839,491 m3/sec, 897,761 m3/sec, 962,599 m3/sec, 1008,717 m3/sec, and 1052,800 m3/sec with a peak time of 5,915 hours. After analysis using software HEC-RAS 5.0.7, DAS Air Manna no longer able to accommodate flow rates occur.