They see problems in the sewage canals of Bangkok, the floodgates Pak Khlong Saen Saeb Canal and sovereign Phrao they said.
The water level in the canal system control cables. Especially the drainage system in Bangkok. Put in the correct conditions and topography. This should race into two plans together is graphic_cheetah12 plan for the rainy season or in this much water. It's for the benefit of flood protection and flood mitigation for a major drainage department, but in the dry season, it must be different to one another. For the removal or hydration rotten from the main canal. Both these systems should consider how to drain. By the force of gravity as much as possible. In order to save the cost of controlling water levels along these canals.