Flood control in the Long Xuyen Quandrangle

Abstract

Major  tasks  of  the  flood  control  in  the  Long  Xuyen  Quadrangle  was  to  master  floods crossing  from  the  Cambodian  border  by a  system  of  dikes, channels,  and  viaducts.  Flows  into the acid  sulfate  soils areas of Ha Tien Quadrangle has reclaimed this vast  land area, from  which flooding water flushes  out to the West Sea by the shortest route. The restriction  of flows  crossing the Cambodian border into the Long Xuyen Quadrangle makes favourable  conditions  for  the  sediment-rich  water  of  Hau  river  to  enter  the  Quadrangle  and
enrich this land area. In the  disastrous  flooding  event  of  2000,  the  flood  control  construction  system  in  the  Long Xuyen Quadrangle remained stable and fully  met the previously set-up requirements:
-Ensuring a full  harvest of the autumn-summer crop for the provinces of An Giang and Kien
Giang.
-Reclaiming the acid sulfate soils areas of Ha Tien Quadrangle into agricultural lands.
-Lowering  peaks of floods,  shortening the flooding  periods  in the Long Xuyen  Quadrangle
and reducing flood  pressure for constructions in the interior fields.
-Bringing sediment-rich  water of Hau river to the interior fields.
-The landscape of this area has remarkably been changed.