Drainage Evaluation Capacity Of Gadjah Mada Sub-system Channel In Central Jakarta

Kandy, Giorgio (2025) Drainage Evaluation Capacity Of Gadjah Mada Sub-system Channel In Central Jakarta. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Jakarta, Indonesia's capital and largest city, is situated on Java, the world's most populous island. Covering 661.23 square kilometers but expanding over 6,392 square kilometers with satellite cities, Jakarta faces significant flooding issues due to rapid urbanization, subsidence, and rising sea levels. As of 2024, it has around 10.67 million residents. The Gadjah Mada River, a key component in river management, is crucial for flood control in the densely populated area. Flooding problems are exacerbated by infrastructure projects like the MRT system and inadequate secondary channels. This study aims to evaluate and improve the Gadjah Mada drainage system to mitigate flooding. Field investigations assess
the Gadjah Mada sub-system channel’s dimensions and flow, alongside interviews with locals about flooding issues. This information, combined with literature reviews on hydrology and hydraulics, forms the theoretical basis for the study. Data is collected from agencies like the Meteorological Agency DKI Jakarta and BBWS Sungai Ciliwung Cisadane, including hydrological, spatial, and hydraulic data. Analysis involves hydrological assessments using methods like the Polygon Thiessen and frequency distribution analyses, and hydraulic modeling with EPA SWMM 5.2. The study aims to evaluate and improve the drainage system to address flooding and enhance channel capacity. This research aims to assess whether the existing Gadjah Mada sub-system drainage channel can handle local rainfall intensity. Evaluate the current flood design for the channel identify alternative designs if the channel fails to manage the rainfall. Determine the channel’s volume capacity following potential changes. Recommend necessary drainage system support facilities for effective planning. Based on the analysis results, flooding still occurs in the existing condition with a volume of 97.664 m³. Therefore, an evaluation was conducted for both conditions involving redesigning cross-sections which was analyzed using rational method, adjusting dimensions of conduits and elevations, as well as re-adjusting the type of outfalls, which subsequently elimimated flooding in the sub-system. The flood design observed in both the existing and replanned conditions are 61.875 m³/s and 99.413 m³/s respectively.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Jakarta Flooding, Gadjah Mada River, Urbanization, Drainage System Evaluation, Hydrological Assessment, SWMM
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA590 Topographical surveying T Technology > TC Hydraulic engineering. Ocean engineering > TC530 Flood control
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Giorgio Kandy
Date Deposited:	31 Jul 2025 07:17
Last Modified:	31 Jul 2025 07:17
URI:	http://repository.its.ac.id/id/eprint/124950

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