（粤港澳大湾区）珠江流域统一调度全面压制咸潮 保大湾区供水无虞

Core Viewpoint - The Pearl River Basin's unified scheduling effectively mitigates saltwater intrusion, ensuring a stable water supply for the Guangdong-Hong Kong-Macao Greater Bay Area [1][2] Group 1: Water Supply Management - The Pearl River Water Resources Commission reported that the region faced challenges due to "less rain, strong winds, and high tides," marking the first test of water supply security this year [1] - Since December 2025, the cumulative rainfall in the Pearl River Basin has been only 37.1 millimeters, which is 49% less than the average, leading to a significant reduction in natural water inflow [1][2] - To ensure water supply safety, the Commission has implemented a "freshwater supplement" strategy, releasing 6.1 billion cubic meters of water downstream since December 2025, increasing the flow of the West River by nearly 60% [2] Group 2: Impact on Saltwater Intrusion - The strong freshwater flow has effectively suppressed saltwater intrusion, with the main water intake points in Zhuhai experiencing only minor exceedances [2] - The average flow of the West River reached 3,300 cubic meters per second in January 2026, an increase of 1,550 cubic meters per second compared to natural inflow, demonstrating the effectiveness of the water management strategy [2] Group 3: Multi-faceted Benefits - The "freshwater supplement" strategy not only secured water supply but also achieved benefits across power generation, navigation, irrigation, and ecology [2] - Power generation at hydropower stations such as Tianyi, Longtan, and Baise increased by 33% to 80% year-on-year, contributing positively to the stability of the power grid [2] Group 4: Future Monitoring and Management - The Pearl River Water Resources Commission maintains sufficient water storage in the reservoir groups to meet future comprehensive water demand [2] - The Commission plans to enhance monitoring and forecasting of rainwater and salinity to implement precise water management strategies [2]