Dam projects slow water.Check dam is the name of project works about engineering, traditional Miao is a slow water weir weir semi permanent type of weir type pigs. Using materials readily available locally, such as branches, rocks, to stem the slow stream water หรือทางน้ำ. Small flow down and locked in the area long enough to areas around will absorb to use. A restoration of degraded forest area forest development is enough to cause the moisture completely anew. Check dam may also be used to test the water. To a high level enough to pull the water used in the canal in the dry season. The project works this is a trial project, Huai Hong khrai, Chiang Mai, and achieved a success so as to other projects later.Fai slow water created in the way flow of water on small streams, to slow the flow - to reduce the severity of stream water, reduce the erosion of the riverbank - when the water flow down. It has water in the Creek for a long time, especially in the dry season - help trap sediment flowing with water, reduce the shallow heard at downstream, water quality is good - helps the soil moist. The jungle abundance increase biodiversity - wildlife, aquatic, living water in the capital in life. Back to the hill / mountain plant bald - damp soil, forest is damp, become forest fire line reduces intensity lights.
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