Spatial : Wahana Komunikasi dan Informasi Geografi
Vol. 26 No. 1 (2026): SPATIAL: Wahana Komunikasi dan Informasi Geografi

Pemetaan Zonasi Risiko Longsor dan Jalur Evakuasi Berbasis Network Analysis di Kabupaten Karo

Rozi Mahmuda (Afiliasi penulis pertama, Universitas Negeri Medan, Medan, Indonesia)
Muhammad Farouq Ghazali Matondang (Afiliasi penulis pertama, Universitas Negeri Medan, Medan, Indonesia)
Restu (Afiliasi penulis pertama, Universitas Negeri Medan, Medan, Indonesia)



Article Info

Publish Date
09 Mar 2026

Abstract

Karo Regency has a high risk of landslides, exacerbated by frequent disasters but not yet supported by evacuation maps based on Network Analysis. This study aims to map landslide risk zones and design optimal evacuation routes in the region. Quantitative methods based on Geographic Information Systems (GIS) were used by analyzing five parameters (rainfall, slope gradient, soil type, geology, and land use) through weighted overlay techniques. Evacuation routes were determined using Network Analysis to identify the safest and fastest routes. The analysis results show a dominance of moderate-risk zones (849.2 ha) and high-risk zones (774 ha), with high-risk areas concentrated in the southern and western parts of the district. Based on this mapping, five interconnected main evacuation routes were successfully designed, along with four safe and strategic gathering points. The evacuation route map is equipped with road names to facilitate navigation during emergencies. The resulting map serves as an important reference for local governments and communities to enhance preparedness and develop more effective landslide disaster mitigation policies

Copyrights © 2026






Journal Info

Abbrev

spatial

Publisher

Subject

Earth & Planetary Sciences

Description

Jurnal SPATIAL Wahana Komunikasi dan Informasi terbit dua kali dalam setahun, bulan Maret dan ...