As to the flood problem, half of the water in the Yangtze comes from tributaries downstream from Sanhsia, tributaries whose upper streams have been just as seriously deforested.
以解決水患問題來說，長江的水並不只來自上游；較大的支流，如右岸的湘、資、沅、澧四條河，與修水、贛江；左岸的岷江、沱江、嘉陵江和漢水，都在中游的四川盆地、洞庭湖及鄱陽湖，匯入長江。而長江的水量有一半來自這些支流。