西南诸河流域1:25万二级流域分级数据集（2002年）

该数据集为西南诸河流域2002年1:25万二级流域分级数据集，含二级流域分区边界、流域分区名称及流域编码信息，是常用的全国水资源分区资料（水资源分区是在一个时期内相对固定并带有一定强制性的分区模式，以利于在一个相当长的时期内各项水利规划都采用统一的基本资料），包含了西南诸河流域二级流域的名称及其流域编码等指标字段。
数据集包含1个shp矢量文件，西南诸河区-二级流域.shp。

This dataset is a 2002 1:250,000-scale hierarchical secondary river basin dataset for the Southwest Rivers Basin. It contains secondary river basin partition boundaries, basin partition names and basin coding information, and serves as a commonly utilized national water resources zoning dataset. Water resources zoning refers to a relatively fixed and somewhat mandatory zoning framework established over a specific period, which ensures that unified basic data can be consistently adopted for various water conservancy planning activities across a relatively long time span. The dataset includes indicator fields such as the names and basin codes of the secondary river basins in the Southwest Rivers Basin. The dataset contains one shapefile (SHP): "Southwest Rivers Region - Secondary Basins.shp".

搜集汇总

背景与挑战

背景概述

该数据集为西南诸河流域2002年1:25万比例尺的二级流域分级数据，包含流域边界、名称及编码信息，基于DEM和水系数据生成，主要用于水资源规划和管理研究。