Cropland exposed to flooding frequency (low, medium and high) was calculated in Con Cuongdistrict of Viet Nam to assess the potential impact of flood on cropland and agriculture productionfor the period 2017-2021. Flooding frequency wascalculated using a change detection approach for the period 2017-2021 on Sentinel-1 (SAR) data andoverlaid with crop mask (2021). The results wereobtained at 10m spatial resolution.