Shijiu Harbour is to be constructed at southern Shandong as an important shipping center with a docking capacity of 100 thousand tonnages of a single vessel.Tides and tidal currents were frequently observed at three different layers from December 1979 to April 1980. Bed-load discharge was sampled and calculated for different weather conditions. Some of the results are as follows:1. The amount of bed-load discharge is 0.1359 g/cm2/day during the spring tide, 0.09 g/cm2/day during the neap tide, 0.488 g/cm2/day during storm weather, which is four times as high as that during average tides.2. The maximum amount of the sediments that settle to the waterway is less than 46.7768 g/cm2 per year, therefore the waterway will not be blocked by the transported sand and clay even after a storm weather. Shijiu Harbor is to be constructed at southern Shandong as an important shipping center with a docking capacity of 100 thousand tonnages of a single vessel. Tenders and tidal currents were frequently observed at three different layers from December 1979 to April 1980. Bed-load discharge was The amount of bed-load discharge is 0.1359 g / cm2 / day during the spring tide, 0.09 g / cm2 / day during the neap tide, 0.488 g / cm2 / day during storm weather, which is four times as high as that during average tides.2. The maximum amount of the sediments that settle to the waterway is less than 46.7768 g / cm2 per year, therefore the waterway will not be blocked by the affecting sand and clay even after a storm weather.