FERNANDA, AKHMAD RIZKY and SABRI, LAODE M and WAHYUDDIN, YASSER (2022) IMPLEMENTASI SIG UNTUK PEMETAAN ANCAMAN BENCANA BANJIR KAWASAN TERBANGUN KOTA PEKALONGAN. Undergraduate thesis, UNIVERSITAS DIPONEGORO.

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Abstract

ABSTRACT
Pekalongan city is an urban area that often occurs in floods. This happens because
the topography is lower than the sea and there are several rivers, resulting in
frequent flooding. Flood has a detrimental impact on various aspects, for example,
built-up areas. Mapping built-up areas affected by floods along with the number of
affected people is deemed necessary. The method used in this research is GIS and
EBBI. The Enhanced Built-Up and Bareness Index (EBBI) method is used to map
the built-up area, while the GIS method is used to obtain flood hazard classes. The
parameters used to map flood threat areas are slope, soil type, rainfall, land use,
distance from rivers, river density, distance from shoreline and topography.
The result of this study is flood hazard map. The class of flood is classified into
three classes there are low hazard is 299.984 ha or 6.63%, medium hazard is
1867.978 ha or 41.28% and high hazard is 2357.029 ha or 52.09% and the total
area of the built-up area classified as low hazard is 22.257 ha or 1.58%, medium
hazard is 784.544 ha or 55.59% and high hazard is 606.620 ha or 42.84%. A built�up hazard map need to be overlayed to the settlements shapefile data with the
assumption that the population is in the residential area, so the North Pekalongan
district is found to be the highest district’s population affected by high hazard of
flood which is 63,637 people with a percentage of 80.7% of total population of
North Pekalongan District and the South Pekalongan District is a lowest with the
5,679 people or 8.68% of the total population affected by low hazard of flood
disasters.

Key words : Built-up Area, EBBI, Flood, GIS

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