Evaluasi Sistem Drainase Saluran Primer Kawasan Medokan Semampir Untuk Meminimalisir Genangan

Arini, Azzahra Putri (2026) Evaluasi Sistem Drainase Saluran Primer Kawasan Medokan Semampir Untuk Meminimalisir Genangan. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kota Surabaya sebagai salah satu kota besar dengan pertumbuhan infrastrukur yang pesat menghadapi tantangan serius dalam pengelolaan sistem drainase. Salah satu permasalahan yang sering terjadi adalah munculnya genangan air di beberapa wilayah, khususnya saat hujan dengan intensitas tinggi. Berdasakan laporan IDN Times pada 12 Februari 2024, hujan deras yang melanda Kota Surabaya menyebabkan genangan di sejumlah titik, termasuk di kawasan Taman Nginden Intan menuju Stikosa AWS. Genangan dengan ketinggian mencapai setengah ban kendaraan roda dua tersebut menunjukkan bahwa sistem drainase, khususnya saluran primer di kawasan tersebut, belum berfungsi secara optimal. Hipotesis awal penyebab permasalahan ini antara lain kapasitas drainase yang tidak mencukupi, perbedaan elevasi saluran, serta saluran tersier yang tidak saling terhubung. Oleh karena itu, penelitian ini bertujuan untuk mengevaluasi kinerja sistem drainase saluran primer di Kawasan Medokan Semampir. Analisis hidrologi dilakukan menggunakan curah hujan rencana periode ulang 10 tahun dengan tinggi hujan sebesar 131,11 mm, sedangkan analisis hidrolika dilakukan dengan bantuan program bantu Storm Water Management Model (SWMM). Pemodelan dilakukan pada dua skenario kondisi exsisting, yaitu kondisi exsisting tanpa pompa dan menggunakan pompa. Hasil simulasi menunjukkan bahwa pada kedua kondisi tersebut masih terjadi banjir dibeberapa saluran. Selanjutnya, dilakukan evaluasi melalui empat skenario perbaikan, yaitu optimalisasi pompa exsisting, perencanaan ulang dimensi saluran sekunder menggunakan metode rasional, perencanaan ulang invert elevation, dan perencanaan kolam tampung. Hasil simulasi menunjukkan bahwa skenario ketiga merupakan alternatif paling efektif, dimana tidak lagi terjadi banjir. Skenario ini meliputi optimalisasi pompa, perencanaan invert, dan kolam tampung dengan dimensi panjang 470 m, lebar 55 m, dan kedalaman 3,5 m, sehingga diperoleh volume total sebesar 〖90.475 m〗^3. Pompa dioperasikan pada menit ke-100 sebanyak tiga unit dengan kapitas masing-masing pompa 〖3 m〗^3/detik.
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Surabaya City, as one of the major cities experiencing rapid infrastructure development, faces serious challenges in managing its drainage system. One of the recurring problems is the occurrence of inundation in several areas, particularly during high-intensity rainfall events. According to a report by IDN Times dated February 12, 2024, heavy rainfall in Surabaya caused flooding at several locations, including the area from Taman Nginden Intan to Stikosa AWS. Inundation reaching approximately half the height of motorcycle wheels indicates that the drainage system, especially the primary channel in this area, is not functioning optimally. The initial hypothesis regarding the causes of this problem includes insufficient drainage capacity, differences in channel elevation, and disconnected tertiary drainage channels. Therefore, this study aims to evaluate the performance of the primary drainage system in the Medokan Semampir area. Hydrological analysis was conducted using a 10-year return period design rainfall with a rainfall depth of 131,11 mm, while hydraulic analysis was carried out using the Storm Water Management Model (SWMM). Modeling was performed under two existing condition scenarios, namely the existing condition without pumps and the existing condition with pumps. The simulation results indicate that flooding still occurs in several channels under both scenarios. Subsequently, further evaluation was conducted using four improvement scenarios, including optimization of existing pumps, redesign of secondary channel dimensions using the Rational Method, redesign of invert elevation, and planning of a detention pond. The simulation results show that the third scenario is the most effective alternative, as no flooding occurs under this condition. This scenario includes pump optimization, invert elevation redesign, and the construction of a detention pond with dimensions of 470 m in length, 55 m in width, and 3,5 m in depth, resulting in a total storage volume of 〖90.475 m〗^3. The pumps are operated at the 100th minute, consisting of three units with a capacity of 〖3 m〗^3/s each.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Drainase, Saluran Primer, Genangan, Medokan Semampir, Kapasitas Saluran ==================================================================== Drainage, Primary Channel, Flooding, Medokan Semampir, Channel Capacity.
Subjects:	T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) 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:	Azzahra Putri Arini
Date Deposited:	19 Jan 2026 06:34
Last Modified:	19 Jan 2026 06:34
URI:	http://repository.its.ac.id/id/eprint/129720

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