GL_St_Lawrence_River_2021 ESI HYDRO Polygons, Lines

The feature classes HYDROL and HYDROP contain vector lines and polygons representing the coastal shoreline and hydrography used in the creation of the Environmental...要素类HYDROL（HYDROL）与HYDROP（HYDROP）包含矢量线与多边形要素，用于表征海岸线与水文地理要素，服务于环境类[原文未完整]的创建工作。