how many lakes are there approximately along yangtze river?

Eason, it's difficult to figure out how many lakes are along Yangtze River. The statistics shows that the total area of these lakes along the river is 15200 square kilometers. And most lakes are located in the middle and lower reaches of the Yangtze River. The total area is 14073 square kilomters. There are 13 big lakes, whose sizes are more than 100 square kilometers.