Data set of flood map of Heilongjiang River Basin in China and Russia (2017-2020)

Based on Sentinel-1, Sentinel-2 satellite data and DEM data, the probability density function fitting method is used to segment the water body and the non-water body, and the Sentinel-2 data in the same period are used for classification and refinement. The spatial distribution characteristics of flood are obtained. The data set shows the annual flood distribution from June to September from 2017 to 2020 in the adjacent regions of China and Russia: Heilongjiang Province, Amurskaya Oblast, Khabarovsky Krai, Primorsky krai and Jewish Autonomous Oblast. It helps users to understand the temporal and spatial distribution of flood events in this area, and provides reference and basis for users and further research.