Watershed boundaries derived from terrain data - King County only

A delineation of large rivers basins in Washington State. Areas that directly drain to the Puget sound but are not part of a river basin are grouped together based on adjacency to a river basin boundary. Delineations among this layer should group within defined WRIAs. A watershed is comprised of multiple basins.本数据集为华盛顿州大型河流流域的划界成果。直接汇入普吉特湾但未归属任何流域的区域，将按照其与流域边界的毗邻关系进行归并。本图层内的所有划界成果均需归入已划定的WRIAs范围内。一个汇水区（watershed）由多个流域组成。