The various functional units together, improve highway for swamp water retention. Help to drain water in the rainy season and to relieve the State in a canal by the Royal instructions, SAMEN, use water filtration water hyacinth because of water hyacinth have properties, acts as a filter, which is called natural water filtration is water hyacinth weed, which are available do absorb toxic chemicals and sewage from spoiling, and sources at the same time, it must constantly bring out the water hyacinth from the swamp every 10 weeks, so no water hyacinth has obscured the Sun until the fertility that will shine into the swamp.
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