Dam dam dam maeo or check dam is a small acidic water or semi-permanent one category. A dam project along the nickname maeo initiative about folk design engineering. Weir is a Weir for water softening maeo semi-permanent one category. The only category with a brood of pigs by using materials that Weir is available locally, such as simple twigs. Rocks to slow the water barrier in the stream or water flow is slow and small, trapped in an area long enough to be absorbed into the surrounding area will be used as a refreshing forest degradation result in moist enough to develop into a complete jungle. Weir may also be used for irrigation maeo, levels high enough to pull water into the canal water in the dry season. The project, along with the initiative this evaluation project, Chiang Mai and Chang Hong Krai successful so far as an example to other projects later.
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