The remains of the 2,930-metre-long bridge, made entirely of granite and dating back nearly 400 years, appeared at Poyang lake in the central province of Jiangxi, the Beijing News reported.
The lake, which has been as large as 4,500 square kilometres in the past, has been drying up in recent years due to a combination of low rainfall and the impact of the Three Gorges Dam, experts say.
State broadcaster China Central Television reported in November that drought had shrunk the lake to less than 1,500 square kilometres, threatening the plankton, fish and other organisms that inhabit it and the livelihoods of the nearly 70 percent of local residents who make a living by fishing.
In 2012, Chinese authorities air-dropped shrimps, millet and maize over Poyang lake to feed hundreds of thousands of birds at risk of hunger due to the drought.
