River network dynamic partitioning method and system combined with multi-source data processing

The invention provides a river network dynamic partitioning method and system combined with multi-source data processing, and relates to the technical field of data processing, and the method comprises the steps: interacting a management system of a target drainage basin, and obtaining a river network topological structure; performing pairwise combination, and performing analysis to obtain a water source communication connection number between each group of river channel information; classifying the river network topological structure to obtain a plurality of cocurrent flow areas; on the basis of the dynamic production pollution information in the preset time period, pollution spreading prediction of multiple pollutants is carried out in the target drainage basin, and multiple pieces of spreading range information are obtained; and performing spread partition optimization in the plurality of cocurrent flow regions to obtain an optimal partition scheme of the target drainage basin, and performing dynamic parti