DrainageArea

The USGS 3D Hydrography Program (3DHP) ArcGIS REST service (3DHP_all) from The National Map is the first of several data services that will be delivered by the 3D...来自美国国家地图（The National Map）的美国地质调查局（USGS）三维水文项目（3D Hydrography Program，3DHP）ArcGIS REST服务（3DHP_all），是即将由3D...交付的多项数据服务中的首个服务。