Study on Monthly Rainfall Trend Impact on Reservoir Simulation in Greater Bandung -- Study of Saturation Flow at Signalized Intersection on Sunny Weather and Rainy Weather -- Deep Learning Neural Network for Time Series Water Level Forecasting -- Optimization Study of n-ZVI Oxidation for Organic Pollutants Removal from Wastewater -- The Effectiveness of Cascaded Bioretention System in Treating Urban Stormwater Runoff -- An Evaluation of Hydrological Simulation of Extensive Green Roof -- Assessment of SRTM, ASTER and IFSAR Digital Elevation Model (DEM) in Oil Palm Plantation River Derivation and Basin Delineation -- Features and Geomorphic Response of Mountainous River by Reach Scale.-Water Infiltration in Salt Land in Nagekeo Flores, Indonesia -- Application of Inhibition Model to Prevent Nitrification Upset in Petrochemical Wastewater Treatment Plant. .

This book contains papers presented in the 6th International Conference on Civil, Offshore & Environmental Engineering (ICCOEE2020) under the banner of World Engineering, Science & Technology Congress (ESTCON2020) will be held from 13th to 15th July 2021 at Borneo Convention Centre, Kuching, Sarawak, Malaysia. This proceeding contains papers presented by academics and industrial practitioners showcasing the latest advancements and findings in civil engineering areas with an emphasis on sustainability and the Industrial Revolution 4.0. The papers are categorized under the following tracks and topics of research: 1. Resilient Structures and Smart Materials 2. Advanced Construction and Building Information Modelling 3. Smart and Sustainable Infrastructure 4. Advanced Coastal and Offshore Engineering 5. Green Environment and Smart Water Resource Management Systems.