Water Resources Study for Strategic Flood Risk Management in Ping, Nan, Chao Phraya River Basins

Abstract

Thailand has been experiencing flood problems from the past to the present. This usually occurs during heavy rains and storms. As a result, the amount of water increased and flooded the houses until they were damaged. The geographic areas of the provinces are lowland areas and the passage of water, therefore, it is difficult to avoid flooding. In 2011, Thailand experienced the worst flooding, especially the northern region of Northeast and Central. For this research, the Nays2DFlood hydraulic model program was applied to study the hydraulic behavior of the Ping, Nan, and Chao Phraya river basins and proposed guidelines for managing flood-prone areas. The results showed that it is proposed to dredge the Copper Pipe Canal and divert water from the lower Ping River to the east bank into the Mae Raka Canal in Tak Province. In the Nan watershed area, the Bang Rakam Canal was proposed to be dredged and the water diverted from the Sirikit Dam to improve the drainage system. In the area of the Chao Phraya River Basin, it was proposed to set up monkey cheeks, water fields, dredging canals, and improve drainage canals. Prepare rainwater shelters, elevated roads, and water diversion. The results of the research can be applied to plan for managing flood-prone areas in the future.