1:2,000,000-scale Hydrologic Units of the United States (OLDER)
收藏DataCite Commons2023-09-28 更新2026-05-07 收录
下载链接：
https://www.sciencebase.gov/catalog/item/631405c4d34e36012efa3163
下载链接
链接失效反馈官方服务：
资源简介：
These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This data set has been superseded by huc2m. This file contains hydrologic unit boundaries and codes for the conterminous United States along with Alaska, Hawaii, Puerto Rico and the U.S. Virgin Islands. It was revised for inclusion in the National Atlas of the United States of America, and updated to match the streams file created by the USGS National Mapping Division (NMD) for the National Atlas of the United States of America. For the most current [...]
提供机构：
U.S. Geological Survey
创建时间：
2023-09-28
