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All Journal Kurva S : Jurnal Keilmuan dan Aplikasi Teknik Sipil
Yayuk Sri Sundari
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Civil Engineering, Building, Construction & Architecture

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Pengaruh Perubahan Debit Banjir Periode Ulang 25 Tahun Akibat Sedimentasi Pada Sub Das Karang Asam Kecil di Kota Samarinda Yayuk Sri Sundari; Viva Oktaviani
Kurva S : Jurnal Keilmuan dan Aplikasi Teknik Sipil Vol 7, No 1 (2019)
Publisher : Department of Architecture, Faculty of Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (366.186 KB) | DOI: 10.31293/teknikd.v1i1.4452

Abstract

For soil types in the Karang Asam Sub Watershed, it is a subtle material resulting from river sedimentation. The effect of biophysical conditions on land cover / land use on sedimentation is very influential when the flood discharge rises because there is no holding river so that the surface water flow becomes large and erosion occurs which results in sedimentation in the river so that the capacity of the river falls due to land use changes that occur erosion resulting in sedimentation into the river so that the capacity of the river is reduced. Reduction in river flow capacity can be caused by sedimentation originating from sedimentation in the River due to the absence of cover vegetation and the improper use of land. The results of the analysis of total sediment transport for all fractions (QB) using the Einstein formula in the Main River of Karang Asam Kecil obtained QB = 0.054 m3 / s, so that the results of this sediment transport are thought to cause siltation / sedimentation which can reduce the water holding capacity of the river.
Memprediksi Kawasan Rawan Banjir Berdasarkan Luas Daerah Genangan Banjir di Kota Samarinda Yayuk Sri Sundari
Kurva S : Jurnal Keilmuan dan Aplikasi Teknik Sipil Vol 6, No 3 (2018)
Publisher : Department of Architecture, Faculty of Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1702.024 KB) | DOI: 10.31293/teknikd.v4i1.1939

Abstract

ABSTRACTChanges in land use patterns affect the potential decline in the region caused by the increasingly widespread use of land for building. which caused a reduction in water catchment areas occurrence inundation or flooding. The purpose of this study was to predict the flood prone areas in the subzone Karang Mumus. Results are expected to be known biophysical subzone Karang Mumus subzone. Analysis region extensive flooding subzone Karang Mumus  of 80.48%, topography of hilly and flat areas in particular there are in the groove river Karang Mumus. Slope is a factor that has a major effect on the level of vulnerability to flooding. Land use affects the determination of the flood prone areas, land use relates to the size of the water runoff. Biophysical conditions in subzone Karang Mumus for the district that are prone to flooding, District of North Samarinda flat slope of 0-8% with an area of 12356.3 hectares of 31.0265%, 25-40% slope class steep slope with a spacious 269.2  hectares  area of 0.6760%, slope>40% grade incline is very steep with an area of 12.7 hectares of 0.0319%. For closure / shrub land use 12700.7 hectares of 31.8913%, the mining area of 4.0864% 1627.4 hectares , with an area of 1814.9 hectares settlement amounted 4,557,2%, open land with an area of 781.5 hectares amounting to 1.9623%, with an area of forest land cover 47.1 hectares of 0.1183% and a vast pool of 1,506 hectares of 55.72%.Keywords: slope, flood prone areas, extensive flooding.
Co-Authors Viva Oktaviani