Study on Channel Improvement of Chaopraya River

Abstract

Chaopraya River is the Important River in Central of Thailand. It is Communication center, Transportation and Important of water resources for agriculture. In 2011 there was flooding and cause damage to life and property. Then, it is necessary to study of finding the way to dredging for drainage to alleviate flooding problems.The Objective of this study is to simulate flow in Chaopraya River with mathematical model MIKE 21 Flexible Mesh cover the area from C.2 station in Muang district, Nakhon Sawan province to Chaopraya Dam in Sapaya district, Chainat province. The model was calibrated with upstream water level of 4 regulators in Chaopraya River there are Manorom, Borommathat, Polthep and Maharat Regulator. The results showed after dredging, Chaopraya River has decreasing water level and most areas has increase of velocity and flow rate.