Daymark Locations (USACE IENC)

Homeland Infrastructure Foundation-Level Data (HIFLD) geospatial data sets containing information on Daymark Locations (USACE IENC).国土基础设施基础级数据（Homeland Infrastructure Foundation-Level Data，缩写HIFLD）地理空间数据集，包含美国陆军工程兵团内河电子导航图表（USACE IENC）中的航标位置相关信息。