On May 23, the reporter learned from CYPC that the pre-flood patrol inspection of the Three Gorges automatic hydrological telemetering system in 2024 has been fully completed. The patrol inspection results showed that the system runs well as a whole; spare parts and components are adequate, and information transmission is stable and reliable.

The Three Gorges automatic hydrological telemetering system is the one boasting the largest scale, the most comprehensive function, and the most advanced technology in China's hydropower industry. It functions as a "clairvoyant" covering the upper reaches of the Yangtze River, and it is capable of observing and collecting the data of water and rainfall regimes in the basin in real time, thus providing real-time and accurate hydrological information for the operation and management of cascade hydropower plants, hydrometeorological forecasting, and dispatching. At present, the monitoring range of the system has covered nearly 80% of the upper reaches of the Yangtze River basin, and the system can complete information collection over major control stations and controlled reservoirs within 10 minutes. Its safe and stable operation provides solid and reliable data assurance for flood control of the six cascade hydropower plants in the main stream of the Yangtze River.

It is known that the patrol inspection was officially launched in early April with a duration of 43 days, covering all key water and rainfall telemetry stations in the upper reaches of the Yangtze River. CYPC has organized several working groups to visit 18 maintenance branch centers for exchanges. Besides, they have performed on-site inspection and module upgrading for over 120 telemetry stations, so as to ensure the stable operation of Three Gorges automatic hydrological telemetering system.