ZONASI DAERAH RAWAN BANJIR BERDASARKAN ASPEK HIDROLIKA PADA SUNGAI CITARUM, JAWA BARAT, PROVINSI JAWA BARAT

PRATAMA, M.YOGA and Sutriyono, Edy and Jati, Stevanus Nalendra (2021) ZONASI DAERAH RAWAN BANJIR BERDASARKAN ASPEK HIDROLIKA PADA SUNGAI CITARUM, JAWA BARAT, PROVINSI JAWA BARAT. Undergraduate thesis, Sriwijaya University.

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Abstract

Based on the administration, the research area is located in Cianjur Regency and West Bandung Regency. The limitation of this research problem is the zoning of flood-prone areas in the Citarum River in the Central Citarum Zone. To get these results, the aspects that influence the occurrence of flooding are discussed. The aspects contained in this discussion are rainfall intensity, runoff coefficient value and flow plan discharge. The analysis of rainfall parameters includes the calculation of the average rainfall and the calculation of the duration of the frequency of rainfall intensity arranged in a 5 and 10 year return period using the Gumbel equation, and next usinh Mononobe equation, then modeling the Intensity Duration Frequency (IDF). The determination of runoff coefficient in this study uses the Hassing method. The runoff coefficient is determined by combining the values of several parameters, namely land cover, soil type, and slope. In looking for the estimate of the peak runoff discharge using the Rational method in the calculation which is then modeled using the Hydrologic Engineering Center-River Analysis System (HEC-RAS) software. The results of the study are monthly average rainfall data from 2010 to 2019 with the highest rainfall value in November 448.07 mm / hour and the lowest in July 52.50 mm / hour. Other data include the area of land cover change in 2014 and 2019, the area of variation in lithology types and the area of slope class division used to determine the runoff coefficient value, which value is 0.54. The next data is the flow rate that increases with return periods of 5 and 10 years, which shows an increase of 11.2%. From these data, the results are obtained in the form of a zoning map for the flood area of the Citarum River, Central Citarum Zone.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Land cover, rainfall, runoff coefficient, flood-prone areas, Central Citarum Zone.
Subjects: G Geography. Anthropology. Recreation > G Geography (General)
Divisions: 03-Faculty of Engineering > 34201-Geological Engineering (S1)
Depositing User: mr. M. Yoga Pratama
Date Deposited: 08 Feb 2021 03:33
Last Modified: 08 Feb 2021 03:33
URI: http://repository.unsri.ac.id/id/eprint/42131

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