#TITLE_ALTERNATIVE#

• Main Author: MAGENIKA JULIAN (NIM 15104003), MIGA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/8597
• Institution: Institut Teknologi Bandung

The decreasing of vegetation has becoming a serious problem in watershed ecosystem. Vegetation as land cover has its function to protect watershed from erosion. An uncovered watershed may cause hydrological force (e.g. rainfall and surface runoff) detaches soil surface easier. This research applies erosion modeling to estimate the amount of sediment yield in Krueng Aceh catchment. Sediment yield is considered as product of erosion rate and sediment delivery ratio (SDR). Erosion rate model is used to calculate the detachment of soil particles which is controlled by flow length, slope, type of land cover, soil type, and rainfall. SDR represents the efficiency of surface water to transport sediment. SDR is set up based on physical process of sediment transport as function of residence time of sediment particles. Computed total sediment yield approximately 2.4×106tons/year. Spatial distribution of sediment yield is used to investigate the critical of erosion. A great quantity of sediment is produced by Krueng Jreue, Inong, and Keumireu catchment sub-divisions. The terrain characteristic of these catchment sub-divisions are steeply sloping topography and uncovered dominated. The reliability of this model compares with erosion modeling of Upper Citarum catchment. <br />