The Mekong River Commission has urged China and lower Mekong countries to share more data on hydropower dam operations. Because water flow in the Mekong River has hit record low levels for a second consecutive year. A report by the commission attributes the low water level to two years of reduced rainfall and the operations of 13 Mekong hydropower dams – two in Laos and 11 in China – as well as dams on Mekong tributaries in Laos. The Mekong also flows through part of Myanmar.