Nam Sam 1A Dam Hydropower Info by Hobo Maps - Go to Hydropower Projects Page - - Home

Nam Sam 1A Dam project was also called "Nam Sum 1A" in the past and on some images below.

Nam Sam is pronounced "Nam Sahm".

Project concept images below show what the dam structures may look like:

Nam Sam 1A Dam Hydropower project dam site is located on the Nam Sam (river) (known in Vietnam as the Song Chu river) is shown in the image below at coordinates 19°54'56.5"N 104°50'17.8"E (19.915694, 104.838278).

The project is located in Samtai District, Houaphan Province, Lao PDR. It is southeast of Vieng Xay and Sam Neua towns - next to the Vietnam border and south of National Road 6.

Dam site location - shown at red marker on satellite image below:

There is very little about this project on the web and much of the info below is from an old single source that needs to be verified and updated.

Nam Sam 1A Dam is a 50 MW hydropower project with 2 vertical axis Caplan turbines at 25 MW each.

The gravity concrete dam is to be 129 meters long, 16.5 meters wide and 44.5 meters high.

The crest elevation of the dam structure is to be at 292 meters above sea level.

The normal surface water level of the reservoir is to be 272 meters above sea level.

The reservoir would have 41 million cubic meter capacity .

The project is developed by Phongsupthavy Group and invested by NamSum 1A Power Company Limited (a member unit of Trung Son Power Joint Stock Company) .

Hydro-mechanical equipment is provided by Quang Trung Mechanical One Member Company Limited.

Nam Sam 1A site images below at the start of construction:

The project will be connected to Vietnam's electricity system transmission grid at the 220 kV Nong Cong Station (near Thanh Hoa Province, Vietnam)

Nam Sam 1A connects to transmission line for export to Vietnam in map below at upper right side. See enlarged version HERE.