The Qiantang River Tidal Bore in elementary school textbooks.

The Qiantang River, also known as the Zhejiang River, is the largest river in Zhejiang Province. Here is a detailed introduction to the Qiantang River: I. Basic Information Source: The Qiantang River has two sources, both of which originate in Xiuning County, Anhui Province. The northern source is the Xin'an River, and the southern source is the Majinxi River in the upper reaches of the Qu River. Flowing Area: The river flows through southern Anhui and northern Zhejiang, and finally flows into the East China Sea through Hangzhou Bay. Length: The river is 588.73 kilometers long from the northern source of the Xin'an River, and 522.22 kilometers long from the southern source of the Majinxi River in the upper reaches of the Qu River. Basin Area: 55,558 square kilometers. II. History and Culture Historical Records: The Qiantang River was first named in the Classic of Mountains and Seas, and was named after the ancient Qiantang County (now Hangzhou). It is one of the main sources of Wuyue culture, the source of the name of the two Zhejiang roads in the Song Dynasty, and the source of the name of Zhejiang Province when it was established in the early Ming Dynasty. Cultural Significance: The Qiantang River Basin has nurtured a rich history, culture, and natural landscape, such as the landscape of the Xin'an River and the poetic and picturesque environment of the Fuchun River. III. Natural Landscape Qiantang River Tidal Bore: The Qiantang River Tidal Bore is known as the "world's first tide" and is a world-class natural wonder. This is caused by the gravitational pull of celestial bodies and the centrifugal force of the earth's rotation, coupled with the special terrain of the trumpet mouth of Hangzhou Bay. Other Landscapes: There are also famous natural landscapes such as Qiandao Lake and Fuchun River in the Qiantang River Basin, as well as many historical and cultural relics and human landscapes. IV. Ecological Environment and Protection Water Resources: The average annual total water resources in the Qiantang River Basin is 38.9 billion cubic meters, but the annual change is large and the spatial distribution is uneven. Some counties and cities have water shortages. Water Quality: The water quality in the Qiantang River Basin is not optimistic, and the water quality in the upper reaches is significantly better than that in the lower reaches. The main over-standard items are ammonia nitrogen, permanganate index, five-day biochemical oxygen demand, total phosphorus, etc. Protection Measures: In order to protect the ecological environment and water resources of the Qiantang River Basin, relevant departments have taken a series of measures, including strengthening water resource management, promoting water pollution prevention and control, and implementing ecological restoration projects. V. Tourism and Development Tourist Resources: The Qiantang River and its basin have rich tourist resources, attracting a large number of tourists to visit. Tourists can enjoy the spectacular Qiantang River Tidal Bore, beautiful landscapes, and rich historical and cultural relics. Tourism Development: With the continuous development of the tourism industry, the tourism infrastructure and service level of the Qiantang River Basin are also constantly improving. Relevant departments actively promote the development and promotion of tourism products to meet the diverse needs of tourists. In summary, as the largest river in Zhejiang Province and one of the main sources of Wuyue culture, the Qiantang River not only has rich natural landscapes and historical and cultural relics, but also faces the dual challenges of ecological environment protection and tourism development. In future development, it is necessary to balance the relationship between ecological protection and tourism development and achieve sustainable development.