3. The weir should have the slope for about 20 - 4 5 degrees, both front and back, no ควรสร้าง dam with face cut 9 education degrees.4. Construction will create a. Step periodic phase up to the area approximately 50 - 200 meters. 4. The construction budget, we almost none. Just let's take stone to yuusuke Baraka is along the canal to rearrange. As an exercise in. If no stone. We will use a punching bag.5. If the water front, water weir would crumble to reduce the speed of the flash flood (down) the stone ี่ก่อ one by one, will be broken, and flow down to the business. Below.6. When they face flash flood water is on the verge of dry, we find the time to exercise my stone back to sort a slow water weir, as (in most cases. Will remain the original structure. Some) takes construction about 1-2 hours a weir.7. Should consider, aquatic, living in a canal that can travel to the river? Because we intend that "in the water to fish in the forest must have water.
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