2. Air alert flood water level monitoring device of water level measuring point is 3 levels to normal water level, high from the ground level about 13.5 cm. Risk level, high from the ground level about 25.5 cm, and the dangerous high from the ground level about 38.0 cm. By comparison of water level monitoring equipment (home entertainments, district vichet City, Amphoe Chae Hom, Lampang)
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