GIS-based Flood Susceptibility Mapping Using Overlay Method in Central Sulawesi

Hutauruk, Rheinhart Christian Hamonangan; Alfiandy, Solih; Nainggolan, Hermanto Asima; Raharjo, Mas Harya Fitra Yudo

doi:10.23917/forgeo.v34i2.10667

Cited by 13 publications

(12 citation statements)

References 13 publications

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“…Those areas based on BPBD (2021) are classified as an area that often frequent floods. Previous research in the same study showed that some areas with flat slopes potentially flood incidents (Hutauruk et al, 2020). When the rain comes and raindrops hit the land surface, the water will flow and look for lower areas.…”

Section: Slope Classificationmentioning

confidence: 81%

Determination of Flood Susceptibility Index Using Overlay-Scoring Data Method based on Geographic Information System (GIS) in Semarang City, Central Java, Indonesia

Romadhon

Aziz

2022

AgriHealth:J.Agr-food.Nutr.Pblchealth

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Semarang City is the capital of the Central Java Province, located in the lowlands and directly adjacent to the north side of the Java Sea. This geographical condition makes this city very vulnerable to being affected by floods. This study aims to determine the distribution of flood-prone locations and classify the level of flood susceptibility that occurs in the Semarang City. Quantitative descriptive is the type of research with an overlay method based on scoring parameters related to environmental conditions. These parameters include slope, soil type, rainfall, altitude, land use and river flow buffers. The scored parameters are then entered into the overlay stage with other parameters in the geographic information system (GIS) application to form a map of the flood susceptibility level. The data analysis technique used the descriptive method. The level of flood susceptibility map resulting from this study is in one area of the Pemali-Juana Sub-watershed. The results also show that the scattered highly vulnerable areas in the northern part of Semarang City are areas with low elevations and flat slopes, then dominated by settlement land use that lacks infiltration areas, small river buffer sizes. These are what make the area classified as an area that is very prone to flooding.

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Section: Slope Classificationmentioning

confidence: 81%

Determination of Flood Susceptibility Index Using Overlay-Scoring Data Method based on Geographic Information System (GIS) in Semarang City, Central Java, Indonesia

Romadhon

Aziz

2022

AgriHealth:J.Agr-food.Nutr.Pblchealth

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“…Furthermore, for light erosion, it is possible to conduct soil conservation measures mechanically, vegetatively and biologically, with limited use of chemical fertilizers, which tend to damage the land as they are unable to improve soil structure aggregation. The role of the government is also very important in helping to handle erosion so that it will not be a cause of flood disasters due to river shallowing (Hutauruk et al, 2020). In order to reduce the risk, mitigation must be made by understanding the signs of disaster due to mild or severe erosion (Shimizu et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Erosion Analysis in the Mrica Reservoir Catchment Area in Indonesia using the Soil Erosion Status Method

Harjadi¹

2021

For. Geo.

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The reservoir catchment area (RCA) of Mrica in Banjarnegara district is a powerplant in Central Java with a capacity of 184.5 MW. Mrica Dam, also called the dam of Great Commander General Sudirman, has seen its functions gradually decrease due to sedimentation from massive erosion that has occurred in the upland regions. RCA Mrica, with the upland area in Wonosobo district, has an area of 93,546.4 hectares, consisting of six sub-watersheds, Lumajang, Serayu upstream, Begaluh, Serayu, Tulis and Merawu. In 2017, sedimentation in the dam reached 238,236,588.20 m3/year, resulting from an erosion rate of 524,948.33 tons/year. In light of this serious erosion problem in the Mrica RCA, this study aims to estimate the distribution of the erosion level, categorised as slight, moderate and severe, using the SES (soil erosion status) formula. SES was calculated by mapping the level of each influential aspect: aspect, drainage, land cover, slope and soil texture. The calculation used SRTM (Shuttle Radar Topography Mission) satellite imagery and 2017 Landsat TM7 images. The results show slight erosion (50 tons/ha/year) in 1,468.7 ha (1.6%); moderate erosion (50-100 tons/ha/yr) in 56,258.8 ha (60.1%); and severe erosion ( 100 tons/ha/year) in 35,818.9 ha (38.29%). Sampling in the field took into account the slope class of nine classes and was repeated three times, so the number of samples taken in the field was 27. From field visits to the 27 location points, there was conformity in the results of the sensing analysis is much more than 85%”. The results of the erosion calculation using the SES method showed severe erosion of 27.9% (26,137 ha); moderate erosion of 70.2% (65,679 ha); and slight erosion =of 1.8% (1,731 ha). Further erosion calculation using the SES method needs to be compared with calculation using other methods.

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“…The elevation in the Wawar watershed is very diverse, the northern area of the Wawar watershed is the upstream area so it is higher than the southern area (downstream area). The nature of water always flows from higher to lower areas, so that areas that have lower elevations have a higher potential for flooding compared to areas that have higher elevations [13]. The majority of areas in the Wawar watershed are at an altitude of > 156 masl which is a mountainous area, the classification of altitude in the Wawar watershed can be seen in Figure 3 and Table 12.…”

Section: Data Used and Methodologymentioning

confidence: 99%

GIS-Based flood susceptibility mapping in Wawar Watershed, Purworejo Regency

Damayanti,

Wikan,

Annurhutami

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Purworejo is one of the regency in Central Java which vulnerable to being affected by flood in rainy season. Wawar watershed is one of the watersheds in Purworejo Regency, the land use in Wawar watershed is dominated by agricultural land so the potential for flooding is quite high in the downstream area. This study aims to determine the distribution of flood-prone locations and classify the level of flood susceptibility that occurs in Wawar Watershed. The method used in this study is data processing on GIS (Geographic Information Systems) using scoring method and weighting of each parameter. These parameters include land use, altitude, rainfall, slope, soil type, and river flow buffers. The resulting hazard map has 3 categories, low, moderate, and high vulnerable level. The results also show that highly vulnerable areas in the southern part of Wawar Watershed that dominated by lowlands area, flat slope, settlement and ricefield land use.

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GIS-based Flood Susceptibility Mapping Using Overlay Method in Central Sulawesi

Cited by 13 publications

References 13 publications

Determination of Flood Susceptibility Index Using Overlay-Scoring Data Method based on Geographic Information System (GIS) in Semarang City, Central Java, Indonesia

Determination of Flood Susceptibility Index Using Overlay-Scoring Data Method based on Geographic Information System (GIS) in Semarang City, Central Java, Indonesia

Erosion Analysis in the Mrica Reservoir Catchment Area in Indonesia using the Soil Erosion Status Method

GIS-Based flood susceptibility mapping in Wawar Watershed, Purworejo Regency

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