Constructing Huaihe River channels separated from Hongze Lake flowing into Yellow Sea

The Huaihe River was an independent river directly flowing into the Yellow Sea before 1128.It became a tributary of the Yellow River in 1128～1851.The lower Yellow River channel shifted to north and entered the Bohai Sea in 1855.Actually,the Huaihe River has been a tributary of the Yangtze River since 1851.At present,after going into the Hongze Lake,the Huaihe River water flows into the sea by four routes.By constructing a channel separated from the Hongze Lake along the northern coast of the lake,and deeply excavating the present Huaihe River Channel to Sea and the Huaishu River-Beiliutang River-New Yihe River channels,water would directly flow into the Yellow Sea and no longer to the Yangtze River.An annual 1000×104 t of suspended sediments(increasing by 860×104 t more than present) would deposit on the coast from Lianyungang to the Sheyang River mouth.The coastal erosion from Lianyungang to the Sheyang River mouth would be ended: the northern section would be stable and the southern section would slowly prograde,forming a new Huaihe River delta.Meanwhile,the sediments would not accumulate on the middle Huaihe River channel and Hongze Lake,and would effectively reduce inundation in the middle Huaihe River reaches.