1:2,000,000-scale Hydrologic Units of the United States (SUPERSEDED)
收藏USGS-Science Data Catalog2026-03-14 收录
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https://data.usgs.gov/datacatalog/data/USGS:28f2bd10-538a-4e0d-a1b6-1930a1037982
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资源简介：
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 data and information relating to
hydrologic unit codes (HUCs) please see
http://water.usgs.gov/GIS/huc.html. The Watershed
Boundary Dataset (WBD) is the most current data
available for watershed delineation. See
http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset
创建时间：
2026-03-28
