辽河流域1:25万二级流域分级数据集（2002年）

该数据集为辽河流域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），包含了辽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，辽河区-二级流域.shp。

This dataset is a 2002 1:250,000-scale hierarchical secondary-level watershed dataset for the Liao River Basin. It contains the boundary, partition name and coding information of secondary-level watersheds, and is a commonly used national water resources zoning dataset. Water resources zoning is a relatively fixed and moderately mandatory zoning pattern implemented over a specific period, intended to ensure that unified basic data is adopted for all water conservancy planning projects across a relatively long time span. It includes indicator fields such as the names and coding of secondary-level watersheds of the Liao River Basin. The dataset includes one SHP vector file named "Liaohe District - Secondary-level Watersheds.shp".