Analysis Of Flood Hazard Zones Using Overlay Method With Figused-Based Scoring Based On Geographic Information Systems: Case Study In Parepare City South Sulawesi Province

Adlyansah, A L; L, R Husain; Pachri, Hendra

doi:10.1088/1755-1315/280/1/012003

Cited by 9 publications

(8 citation statements)

References 5 publications

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“…The parameters that have been given dignity are then overlaid. The results of the overlay get a total rating which can then be classified into the IPL class [25], [26], [27], [28]. The total value calculation is performed via the subsequent formula: IPL = (R+L+T+H) x B Information: IPL: Land Potential Index Q: Soil Type R: Slope H: Hydrology L: Lithology B: Disaster Vulnerability…”

Section: Data Analysis Methodsmentioning

confidence: 99%

Analysis of Land Potential Index of Village Cash Land and Oro-Oro Land in Boyolali Regency

Altair,

Saputra,

Irfan

2024

E3S Web Conf.

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Boyolali Regency comprises a variety of land uses, which encompass village treasury land and oro-oro land. The importance of examining this land’s potential lies in its optimization and the reduction of disaster-related risks. This study’s objective is to evaluate the land potential index, aiding in effective land management decisions. The primary aim is to assess the land potential index for village treasury land and oro-oro land in Boyolali Regency. This research employs spatial analysis within a geographic information system and involves parameter rating and overlaying. Parameters such as topography, lithology, soil type, hydrology, and disaster vulnerability are considered to determine the land potential. The results classify Boyolali Regency’s land potential index into five categories: very low, low, medium, high, and very high. Each category exhibits variations in potential and vulnerability for various purposes, including settlements, gardens, moorlands, forests, and rice fields. Field surveys generate maps showing the distribution of village treasury and oro-oro land with varying potential levels. The assessment takes multiple factors into account, such as topography, land area, and proximity to protected or disaster-prone areas when identifying suitable land for relocation. This research provides valuable insights for land planning and management in Boyolali Regency by integrating considerations of land potential and vulnerability.

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Section: Data Analysis Methodsmentioning

confidence: 99%

Analysis of Land Potential Index of Village Cash Land and Oro-Oro Land in Boyolali Regency

Altair,

Saputra,

Irfan

2024

E3S Web Conf.

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“…Overlay processed using the application ArcGIS where combine some attribute from several maps to produce a combined map (Guntara, I, 2013) [15]. Before doing overlay, the map to be processed must have a score according to the classification parameters used.…”

Section: Overlaymentioning

confidence: 99%

Analysis of determining the location of potential flood evacuation shelter in Butuh District, Purworejo Regency

Zhafirah,

Anggani,

Fadilah

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Map of flood events in Purworejo Regency, on January 16 2019 there were 7 flood-affected subdistricts, namely Butuh District, Bayan District, Banyuurip District, Pituruh District, Purwodadi District, Grabag District, and Ngombol District. Butuh District is the area most affected by flooding in Purworejo Regency. There are 9 villages out of 41 villages in Butuh District that are not affected. The flooding in Butuh District was caused by the overflow of several rivers, such as tributaries of the Wawar River, Gebang Besar River, and Kedunggupit River. This study aims to determine the distribution of flood vulnerability and potential shelter flood disaster evacuation in Butuh District, Purworejo Regency. The water level is estimated to reach 1 meter and makes all access closed. According to the Commander of Kodim 0708 Purworejo, there were still some residents who did not want to be taken to a safe location and with a good approach, the residents were eventually evacuated. Losses caused by floods in Butuh District were only damage to household appliances and there were no casualties. Another problem caused by the flooding in Butuh District is itching of the skin. There must be efforts to prevent floods in the Butuh District so that they do not happen again and cause the same losses. Flood disaster mitigation is an action that must be taken. Interpolation IDW (Inverse Distance Weight) and scoring to get flood hazard results and digitization to get evacuation routes. The research results show that the area is prone to flooding. Interviews showed that the southern region experienced the worst flooding because the further south you go, the lower the slope and several villages in the southern region are affected by the discharge of water into rivers from other areas. Meanwhile, secondary data shows that the northeast to south and northwest regions of Butuh District experienced the worst flooding due to high rainfall and a soil profile that was saturated with water so that several areas that had flat and sloping slopes were affected by flooding. Interviews and potential secondary evacuation shelters obtained 18 evacuation shelters and 37 evacuation shelters.

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“…Water flows from high elevation to low elevation so that the slope affects runoff and infiltration. According to [19], floods occur faster in flat areas and low elevations than in areas with high elevations and steep slopes. Flat slopes and low elevations natuarally are placed at high weight as potentially flooded areas.…”

Section: The Characteristic Of Vulnerability Flood Variablesmentioning

confidence: 99%

“…Usually, water flows from high elevation to low elevation, and thus, the slope affects runoff and infiltration. Based on a study by [19], flooding occurs more quickly in flat areas at low elevations than in areas with high elevations and steep slopes. The dominant landforms in Langkat Regency are plains with an area of 232,835.70 ha or 37.86% and mountains with an area of 185,542.85 or 30.17% (Table 4).…”

Section: The Characteristic Of Vulnerability Flood Variablesmentioning

confidence: 99%

Spatial Distribution of Flood Vulnerability in Langkat Regency, North Sumatera Province, Indonesia

Thoha¹,

Slamet²,

Harahap³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Deforestation has a real impact on increasing the level of disaster risk, especially flooding. The real impact of the flood disaster is experienced by Langkat Regency community, North Sumatera Province, Indonesia. The impact of flooding is physical, social, economic, and environmental losses that are perceived directly by the community close to the disaster site. The objective of this study is to analyze the distribution of flood vulnerability levels in Langkat Regency, North Sumatera Province. Determination of the distribution of the flood vulnerability level area used spatial modeling with a scoring method with several variables, including rainfall, land slope, soil texture, land use, landform, and riparian buffers. The distribution of flood vulnerability areas is mostly at very low level with the percentage of the area reaching 53% of the Langkat Regency area. The three districts that have the widest high - very high flood vulnerability levels are Wampu District covering an area of 63,805.92 ha or 14.56%, of the total area of Langkat Regency, Pematang Jaya District covers 78,882.02 ha or 18.01% and Hinai District covers an area of 70,311.41 ha with or 16.05%. This study offers suggestions that the spatial distribution data of flood vulnerability level areas can be developed into an early warning system, for making rapid disaster response procedures.

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Analysis Of Flood Hazard Zones Using Overlay Method With Figused-Based Scoring Based On Geographic Information Systems: Case Study In Parepare City South Sulawesi Province

Cited by 9 publications

References 5 publications

Analysis of Land Potential Index of Village Cash Land and Oro-Oro Land in Boyolali Regency

Analysis of Land Potential Index of Village Cash Land and Oro-Oro Land in Boyolali Regency

Analysis of determining the location of potential flood evacuation shelter in Butuh District, Purworejo Regency

Spatial Distribution of Flood Vulnerability in Langkat Regency, North Sumatera Province, Indonesia

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