The form of the weir can be divided into 3 A
2.A local elementary, commonly known as "check dam" is a construction material exist in nature, such as branches, the rod. Flanked by stone of various size in the creek or ditch. It can trap sediment.The weir has
.2. A sort of rock is relatively fixed. A sort of stone wall construction with water. Construction of the middle and lower of the creek or raceway can trap sediment and retention น้ำในช่วงฤดูแล้ง partial
3.A reinforced concrete construction is permanent. Most will be conducted in the end of the creek or ditch. It can trap sediment and keep กักน้ำ in dry season. Construction depends on the size of the stream.4 meters.
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