The check dam in Thailand,
1) The big project of the natural water preservation will be handle by royal irrigation department, Ministry of Agriculture and cooperation.
2) For the secondary or moderately project will be handle by royal irrigation department and natural water resources department.
3) The next level will be handle by natural water resources department, Land development department and local administrative office including local society. Check dam project will have a low cost by construct it with natural resources in this area such as stones that cover it with a nest to block a stream and a small river in the length. Most of Check dams in Thailand have typical dam or small dam up from the past up to 012 can divided into 10 typical models