GeoEco
Vol 10, No 1 (2024): GeoEco January 2024

FLOOD HAZARD MAPPING BASED ON MULTI-CRITERIA SPATIAL ANALYSIS IN THE SAMIN WATERSHED, INDONESIA

Sofyan Sholeh (Department of Environmental Science, Universitas Sebelas Maret)
Chatarina Muryani (Department Geography Education, Universitas Sebelas Maret)
Suryanto Suryanto (Department of Environmental Science, Universitas Sebelas Maret)



Article Info

Publish Date
30 Jan 2024

Abstract

The Samin watershed which is located in the Mount Lawu area is vulnerable to flood disasters due to human activities. This research was carried out by inventorying parameter data to create a flood disaster vulnerability map using a GIS-based multi-criteria spatial approach. The seven parameters used in flood disaster analysis are Elevation, Slope, Distance from River, Drainage density, Topographic Wetness Index (TWI), Landuse, Rainfall, Type of Soil, Geology. The weight of each parameter is determined using the Analytical Hierarchy Process (AHP) which has the driving factors for flood disasters. The flood hazard map was obtained using a weighted overlay method and grouped into five classes, namely very low, low, medium, high and very high. The results of the analysis show that 11.36% of the study area has a very low hazard, 27.10% has a low hazard, 39.57% has a medium hazard, 20.43% has a high hazard and 1.54% has a very high hazard.

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Journal Info

Abbrev

GeoEco

Publisher

Subject

Earth & Planetary Sciences Education Environmental Science Social Sciences

Description

GeoEco is a journal covering all fields of education and science related to geography and the environment. The purpose of writing this journal are to reveal facts, problems and problem solving that can be used as input for Government, institutions, society and individual.The subject matter of the ...