River Course Shrinkage and Flood Control of the Lower Yellow River

An obvious change of incoming water flow and sediment of the Lower Yellow River has contributed to the river course shrinkage.Data analysis shows that the discharge capacity reduction mainly occurred in the main channel.Some concept analysis illustrated that the flood problem may be more serious than previous situation but the flood may have a different form.For the new situation in the Lower Yellow River,the main problems for the flood prevention are on the adjustment of incoming water flow and sediment,regulation of river course controlling projects,and floodplain management.