European river catchments

The purpose of the European river catchments (ERC) is to provide a homogeneous European catchments dataset at scale 1:1 million that can be used together with the digital topographic data of EuroGlobalMap欧洲河流流域数据集（European River Catchments, ERC）旨在提供一套1:100万比例尺的统一标准化欧洲流域数据集，可与EuroGlobalMap的数字地形数据配套使用。