Abstract

West Lombok Regency often experiences floods. The flooding problem requires proper land use planning and management that is also integrated with the regional spatial strategy. However, in reality there are often inconsistencies between regional spatial plans and actual land use. The purpose of this research is to make a map of the distribution of flood-prone areas; to analyse the relationship between land use and spatial pattern plans in flood-prone areas; to analyse the relationship between spatial use patterns in flood-prone areas and existing land use. This research was conducted based on spatial analysis, multicriteria analysis, and descriptive analysis. There are six flood-prone factors used in this study, including rainfall intensity (I), slope (S), land use (U), soil type (ST), distance from drainage network/river (D) and altitude (E). The results of this study indicate that the area in West Lombok Regency based on the potential class of flood vulnerability is dominated by the mildly vulnerable class which is spread across all sub-districts, namely 47,624.24 Ha. (51.80%), not prone is 21,001.92 Ha (22.84%), and ± 25% of the remaining area is divided into medium prone 15,241.75 Ha (16.58%), prone 7,871.98 Ha (8.56%) and very prone 195.79 Ha (0.21%).

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