IENC_Distance_Marks_2025

This dataset contains USACE IENC distance mark locations. 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 or rivers. These distance marks are measured in Statute Miles.

本数据集包含美国陆军工程兵团（USACE）IENC距离标记的点位数据。距离标记用于标识自基准点起算的距离，其可为实体可见的构筑物，亦可为无需特殊安装的专属点位。此类标记通常设置于运河或河道沿线，且以法定英里（Statute Miles）作为计量单位。