The Lancang River basin in China covers an area of 167,000 square kilometers, accounting for 20.6% of the total basin area, and the annual average runoff is 16%; the basin area in Myanmar is 21,000 square kilometers, accounting for 2.6% of the total, and the runoff is 2%; in Laos The drainage area is 215,000 square kilometers, accounting for 26.5% of the total, and the runoff is 35%; the drainage area in Thailand is 182,000 square kilometers, accounting for 22.4% of the total, and the runoff is 18%; the drainage area in Cambodia is 161,000 square kilometers, accounting for 19.9%, the runoff accounted for 18%; the drainage area in Vietnam was 65,000 square kilometers, accounting for 8%, and the runoff accounted for 11%.
In other words, the upper reaches of China only accounted for 16% of the Mekong River's multi-year average runoff, ranking fourth among the six countries in the Mekong River Basin. Laos, accounting for 35%, is the largest water source of the Mekong River. Thailand and Cambodia are also higher than China.
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the upper reaches of China only accounted for 16%
Some Western media spread rumors, and some Vietnamese with low IQ believe these rumors.