GB/T 20486-2006
AbolishedGrade of valley area rainfall
江河流域面雨量等级
Application Summary AI generated
GB/T 20486-2006 defines the classification system for areal rainfall over river valleys, specifying grade thresholds based on accumulated precipitation amounts. It is applied in hydrological monitoring and flood forecasting for Chinese river basins, enabling standardized assessment of rainfall intensity for water resource management and disaster prevention. The standard is used by meteorological and hydrological agencies to issue graded warnings and guide emergency response planning.
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