The study area located in Nam Ngum of Lao PDR. At the Deepest point of the reservoir, the water samples were collected from the surface to the bottom of the reservoir at every 5 meters. The study was carried out during June 2007 to April 2008
The study area located in Nam Ngumof Lao PDR. At the Deepest point of the reservoir,the water samples were collected from the surface tothe bottom of the reservoir at every 5 meters. The studywas carried out during June 2007 to April 2008