Reosa Andika Firmansyah, R. Gagak Eko Bhaskoro, Aji Hilmi Arianto

Pemanfaatan Sistem Informasi Geografis Untuk Analisis Kerentanan Banjir Lahar Dingin Terhadap Mata Air dan Jaringan Pipa PDAM Tirta Sembada Kabupaten Sleman

Introduction

Pemanfaatan sistem informasi geografis untuk analisis kerentanan banjir lahar dingin terhadap mata air dan jaringan pipa pdam tirta sembada kabupaten sleman. Analisis kerentanan banjir lahar dingin Merapi terhadap mata air & pipa PDAM Tirta Sembada Sleman menggunakan SIG. Identifikasi bahaya & kondisi infrastruktur air.

Abstract

Bencana banjir lahar dingin yang terjadi di Gunung Merapi berakibat buruk terhadap infrastruktur tak terkecuali aset PDAM Tirta Sembada yaitu pipa. Penelitian ini membahas tentang Pemanfaatan Sistem Informasi Geografis (SIG) untuk mengidentifikasi tingkat bahaya banjir lahar dingin di Kecamatan Pakem dan Kecamatan Turi. Penelitian ini dilakukan dengan pengumpulan dan analisis data spasial berupa data bahaya banjir lahar dingin sehingga didapatkan gambaran wilayah-wilayah yang rentan terhadap banjir lahar dingin. Dilakukan klasifikasi tingkat kondisi jaringan pipa PDAM dan mata air terhadap bahaya banjir lahar dingin. Kondisi tersebut perlu upaya untuk meminimalisasi dampak bencana lahar dingin dengan menganalisis data peta bahaya menggunakan sistem informasi geografis terhadap zonasi berdasarkan kejadian banjir lahar dingin di Kabupaten Sleman. Hasil klasifikasi kelas zonasi bahaya banjir lahar dingin dibagi menjadi tiga kategori kelas yaitu kelas rendah, sedang, dan tinggi. Hasil analisis klasifikasi tingkat kondisi mata air dan pipa PDAM Tirta Sembada yaitu baik, sedang, dan buruk. Data tersebut memungkinkan pemetaan hubungan sumber air dan infrastruktur penting seperti pasokan air minum. Hasil dari penelitian ini adalah didapatkan pipa dengan kondisi buruk sepanjang 51.275,98 m dan didapatkan 6 mata air dalam kondisi buruk. Sedangkan hasil analisis tentang bahaya banjir lahar dingin terhadap mata air dan jaringan pipa terdapat 2 mata air dalam kondisi tidak aman serta 48 ruas pipa dalam kondisi tidak aman.

Review

This paper, titled "Pemanfaatan Sistem Informasi Geografis Untuk Analisis Kerentanan Banjir Lahar Dingin Terhadap Mata Air dan Jaringan Pipa PDAM Tirta Sembada Kabupaten Sleman," addresses a highly pertinent and critical issue concerning the impact of cold lava lahars from Mount Merapi on essential water infrastructure. The study effectively leverages Geographic Information Systems (GIS) to analyze the vulnerability of water springs and pipeline networks belonging to PDAM Tirta Sembada in Sleman Regency. This research is crucial for disaster risk reduction and ensuring the resilience of public water supply systems in areas prone to such natural hazards, offering a valuable contribution to regional disaster management and infrastructure planning. The methodology employed involves the collection and spatial analysis of cold lava lahar hazard data to delineate vulnerable regions within Kecamatan Pakem and Turi. A key aspect of the study is the classification of both the lahar hazard levels (low, medium, high) and the resulting condition of PDAM Tirta Sembada's springs and pipelines (good, medium, bad) against these hazards. The findings are quite specific and impactful, identifying 51,275.98 meters of pipeline and 6 springs in 'bad' general condition, and further pinpointing 2 springs and 48 pipe segments as 'unsafe' when specifically analyzed within lahar hazard zones. This detailed spatial analysis provides a clear and actionable picture of critical infrastructure at risk. The paper's strength lies in its practical application of GIS to a real-world problem with direct implications for public service and disaster management. By spatially connecting lahar hazard zones with critical water supply infrastructure, the research provides actionable insights for PDAM Tirta Sembada to prioritize mitigation efforts and improve system resilience. While the abstract offers a strong overview of the approach and results, the full paper would ideally elaborate on the specific GIS techniques and data models used for classification and vulnerability assessment. Nevertheless, this study offers a valuable framework for understanding and addressing the complex challenges posed by natural disasters to urban infrastructure, serving as a significant contribution to both disaster hydrology and infrastructure management.

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