Dampak Penerapan Green Infrastructure dalam Pengurangan Limpasan Banjir di Sub DAS Sail, Kota Pekanbaru

Arnan, Karmila Afriyani (2025) Dampak Penerapan Green Infrastructure dalam Pengurangan Limpasan Banjir di Sub DAS Sail, Kota Pekanbaru. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pesatnya pertumbuhan penduduk di Kota Pekanbaru berdampak pada meningkatnya lahan terbangun dan berkurangnya daerah resapan yang menyebabkan peningkatan volume limpasan permukaan dan kejadian banjir khususnya di wilayah Sub DAS Sail. Kondisi ini diperparah oleh tingginya curah hujan akibat fenomena pemanasan global yang turut memperbesar risiko banjir di kawasan perkotaan. Penelitian ini bertujuan untuk mengetahui sebaran lokasi yang berpotensi diterapkan green infrastructure dan dampak penerapannya dalam mengurangi limpasan banjir pada Sub DAS Sail. Metode yang digunakan meliputi analisis Delphi untuk menentukan variabel-variabel yang memengaruhi pemilihan lokasi, analisis spasial berbasis overlay dan seleksi atribut untuk mendapatkan lokasi yang sesuai, serta analisis hidrologi menggunakan metode Soil Conservation Service Curve Number (SCS-CN) untuk melihat pengurangan limpasan. Hasil penelitian menunjukkan bahwa terdapat sepuluh variabel utama yang berpengaruh dalam penentuan lokasi green infrastructure, antara lain luas DAS, kemiringan lereng, jenis tanah atau kelompok hidrologi tanah, daerah bervegatasi, daerah kedap air, badan air, tanah kosong, dan zona bahaya banjir. Berdasarkan hasil analisis spasial yang menggunakan variabel-variabel tersebut, tujuh dari delapan jenis green infrastructure yang diteliti memiliki lokasi potensial untuk diterapkan di Sub DAS Sail, dengan kolam retensi dan kolam detensi sebagai jenis yang paling luas sebarannya. Hasil simulasi hidrologi menunjukkan bahwa kolam detensi mampu mengurangi volume limpasan sebesar 6%, diikuti oleh kolam retensi sebesar 3%, sementara jenis lainnya memiliki kontribusi yang lebih kecil. Dari temuan ini dapat disimpulkan bahwa penerapan green infrastructure memiliki potensi dalam mengurangi limpasan banjir, meskipun belum sepenuhnya mampu mengeliminasi seluruh potensi banjir yang ada.
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The rapid population growth in Pekanbaru City has led to an increase in built-up areas and a decrease in water catchment areas, resulting in increased surface runoff and flooding, particularly in the Sail Sub-Watershed area. This situation is exacerbated by high rainfall due to global warming, which further increases the risk of flooding in urban areas. This study aims to identify the distribution of locations suitable for the implementation of green infrastructure and assess the impact of its application in reducing flood runoff in the Sub DAS Sail area. The methods used include Delphi analysis to determine the variables influencing location selection, spatial analysis based on overlay and attribute selection to identify suitable locations, and hydrological analysis using the Soil Conservation Service Curve Number (SCS-CN) method to assess runoff reduction. The results of the study indicate that there are ten main variables influencing the determination of green infrastructure locations, including watershed area, slope gradient, soil type or soil hydrological group, vegetated areas, impervious areas, water bodies, vacant land, and flood hazard zones. Based on the spatial analysis using these variables, seven out of eight types of green infrastructure studied have potential locations for implementation in the Sail Sub-Watershed, with retention ponds and detention ponds being the most widely distributed types. Hydrological simulation results indicate that detention ponds can reduce runoff volume by 6%, followed by retention ponds at 3%, while other types contribute less significantly. From these findings, it can be concluded that the implementation of green infrastructure has the potential to reduce flood runoff, although it cannot completely eliminate all existing flood potential.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Green Infrastructure, Limpasan Banjir, Daerah Resapan Air, Green Infrastructure, Flood Runoff, Water Absorption Area
Subjects:	H Social Sciences > HT Communities. Classes. Races > HT166 City Planning--Environmental aspects T Technology > T Technology (General)
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Regional & Urban Planning > 35201-(S1) Undergraduate Thesis
Depositing User:	Karmila Afriyani Arnan
Date Deposited:	01 Aug 2025 09:36
Last Modified:	04 Aug 2025 03:20
URI:	http://repository.its.ac.id/id/eprint/125605

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