Laos is rich in water resources which provide 252 billion cubic meters per year or 55,000 cubic meters per person per year on average.

Laos has a much larger volume of water per capita compared to other countries. According to UNESCO 2005 year statistics, Laos had water resources measuring 55,000 cubic meters per person per year, Vietnam had 10,810, Thailand had 6,460 and the United States 10,270.

Actual water use in Laos is low, with the amount of water stored in reservoirs only 2.8 percent of the total amount of water available. Therefore it is necessary to store the water in reservoirs, the stored water can be used for Hydropower and then for Irrigation and Drinking.