They went to see the problems of water pollution in the various canals of Bangkok canal canal floodgate thewes extremely raw and Khlong lat phrao, they said.Control system water levels in the various lines. Especially the water drainage in Bangkok. Should put the system according to the situation and topography, which should race into 2 plan together. A plan was graphic_cheetah12 for use with in rainy season or in the wet season. Just for the sake of flood prevention and mitigation is important but the Department to drain water in the dry season, it must be organized another differently. For removal or dehydrate rotten out such as the main canal Both of which this system should consider how to drain the water. The earth"s gravity as possible. In order to save cost to control water levels along the canal these.
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