The occurrence of watphai from the storm taifun gay At the beginning of November 1989 and flooding from the storm zone c hot da. In late August 1997, causing major flooding
In Chumphon Canal watershed because of that population increases, more land is used, as well. As a result, changing land use patterns that vary from an area upstream and downstream water. When several consecutive days of torrent River on one of the branches, it will cause water to flow quickly into forest. Water quantity exceeds the capacity of river canals until the water runs off the Taling. Flood conditions along the lower part of the watershed annually. (Su-wat, 2546 (2003)) that in the past, the problem of flooding in Chumphon province caused by water flowing from the Canal basin is a basin 2 tha taphao flowing from the North and Chumphon, Canal basin, which flows from the West. But the problem with flooding in Chumphon Canal basin is not yet resolved
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