DISTANCE MARK POINT
收藏USACE GIS Open Data Portal2026-05-16 收录
下载链接：
https://geospatial-usace.opendata.arcgis.com/maps/551c4969f80b4cf6be7da23e1ee7831c
下载链接
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资源简介：
A distance mark indicates the distance measured from an origin and consists of either a solid visible structure or a distinct location without special installation. Usually found on canals.
提供机构：
US Army Corps of Engineers
