Qiantang River is the largest river in Zhejiang Province, and the Qiantang tide is called the most spectacular sea tide. In recent years, there have been constant reports of accidents where people were swallowed by the river; therefore, predictions of the Qiantang River tides, as well as accurate rise times and timetables of the Qiantang River tides are extremely important. They also serve as one of the safety guarantees for tourists.
Not long ago, Hangzhou Meteorological Bureau and Hangzhou Hydrology and Water Resources Monitoring Center jointly launched a Qiantang River tide watching forecast grading system to ensure the safety of tourists who watch the tides.