Test Study on Water Problems after Barrier Construction in the Jinjiang Estuary

For improving water scenery of Quanzhou city to form a good-looking artificial lake, a barrier is planned to be built in the Jinjiang estuary to store up water from runoff and tide. Some water problems dealing with the barrier construction in the lower reach of the Jingjiang River, such as city flood control and draining waterlogging, water quality, ship passing, and so on, also are concerned by many aspects of whole society. Detail research on these problems for providing a basis of design and operation of the barrier was performed in Nanjing Hydraulic Research Institute according to a physical model test. The result shows that there is a small impact to flood running, and disadvantageous impact to water quality can be reduced to minimal extent by reasonable operation manner of the barrier.