Abstract:
The study on sediment load was conducted at Kerteh River catchment area. The study
site was chosen due to the rapid development of Kerteh along with the increase in the
population. In general, the study consists of two main parts which was the ground
sampling and using GIS technology (A VSW AT) to create watershed model to predict the
sediment load in the study area. During ground sampling, water samples collected from
station I and station 2 for suspended sediment concentration (SSC) analysis which was
conducted in the laboratory using SSC method. Besides that, the land use activities in the
study area was also recorded to be later used in the A VSW AT simulation. For A VS WAT
simulation, input of Digital Elevation Model, land cover data, stream network data, soil
data, weather data and precipitation data were loaded into the A VSW AT database. The
simulation results of sediment load compared with SSC results obtained from ground
sampling to enable A VSW AT to simulate an accurate and reliable data of sediment load
in the study area. The analysis used to determine the relationship between SSC and
simulation of suspended sediment load by A VSW AT in station I and station 2 was
correlation coefficient. The correlation coefficient analysis shows a strong relationship
between SSC data from ground sampling and simulation data of sediment load by
A VSW AT for both stations. This is because the R2 value for station I was 0.906 and for
station 2 was 0.922. The AVSWAT was also predicted the sediment load -for: next 20
years in the Kerteh River catchment area which was from 2013 until 2032 and the
sediment load value ranges from 673000 metric tonne per year and 1893000 metric tonne per yer
