Water quality monitoring of Maong River, Malaysia

Abstract

A water quality simulation model for Maong River, which flows through Kuching City, in Malaysia was explored with a focus on predicting the dissolved oxygen (DO) parameter. The model simulated the DO levels using the hourly data collected in December 2006. The water quality model was developed to simulate the inflow water conditions and estimate the DO levels at various locations along the river reaches as it flows through the highly populated Maong River catchments. The model adopted a hydrodynamic flow simulation to capture advection and diffusion due to different flow conditions. From the results, it is clear that DO concentrations are clearly affected as the river flows downstream. The correlation of the observed and simulated DO concentration was 0·82.