SALINITY INTRUSION TREND IN RIVER AND CANAL SYSTEMS AND SOME PREVENTION METHODS IN BEN TRE PROVINCE

Ben Tre province locating in the Mekong delta has been affected mainly by tide of the East Sea; saline water resources have intruded through 3 river mouths: Dai, Ham Luong and Co Chien. Due to the small quantity of flow, salinity intrusion occurs through estuaries from from 2, 3 months to the whole year with higher and higher concentration by the end of the dry season. From March to May, salinity concentration of 4g/l can intrude 50km further inland and cause many difficulties for production and people life. Salinity prevention and effective water sources utilization of the Mekong River is an essential problem for the Mekong river basin. The paper has presented the salinity intrusion trend and suggested some methods to prevent in Ben Tre province