2021年全国河网分布图

河网分布图数据来源于Open Street Map网站，该项数据将全国水系全图按照行政区域精确划分成省、市、区，中国水系全图，行政区划内水系分布，可分图层显示河网，标注一、二、三级主要河流名称，数据直观，质量可靠，符合项目使标准。

The river network distribution map dataset is sourced from OpenStreetMap. This dataset precisely divides the national comprehensive water system map into provinces, prefecture-level cities, and districts based on administrative divisions. It includes the complete national water system map and the water system distribution within each administrative division, supports displaying river networks in separate layers, and annotates the names of primary, secondary, and tertiary major rivers. The data is intuitive, reliable in quality, and complies with the project's usage standards.