National Waterway Network Lines
收藏US Department of Transportation Open Data Portal2026-02-06 更新2026-03-28 收录
下载链接：
https://data-usdot.opendata.arcgis.com/maps/06037f2b23ff401aa1d379c2632a58f6
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资源简介：
The National Waterway Network (NWN) is a geographic database of navigable waterways and channels in and around the United States, for analytical studies of navigation performance, for compiling commodity flow statistics, and for mapping purposes.
创建时间：
2022-08-26
