The Dakchaliou II HHP  is expected to locate on Nam Pa Gnou river  and its tributary stream in the vicinity of Dakchung district Sekong province. Dam site will be constructed at location where is about 20 Km from Dakchung district and 10 Km  far from Vietnam- Lao border into the west, 120 Km from Sekong Province into the northeast  in the route. The project is expected to construct at site between Sekaman 3 Damsite  and power house . It is geographical coordinates are within:15°24'16.80"to15°25'11.48"Northern latitude and107°24'42.88"to107°25 '22.56"longitude The catchment area of Dakchaliou II   at dam site is 125 Km2. Normal water level is 685 m and dead water level  is 681m. Area of reservoir surface confirming to NWL is 0.049  Km2.