National Parks

The National Parks dataset is frequently updated by the National Park Service (NPS) and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). This dataset depicts National Park Service boundary data that was created by the Land Resources Division. NPS Director's Order #25 states: "Land status maps will be prepared to identify the ownership of the lands within the authorized boundaries of the park unit. These maps, showing ownership and acreage, are the 'official record' of the acreage of Federal and non-federal lands within the park boundaries. While these maps are the official record of the lands and acreage within the unit's authorized boundaries, they are not of survey quality and not intended to be used for survey purposes." As such this data is intended for use as a tool for GIS analysis. It is in no way intended for engineering or legal purposes. For the full data description, please go to https://irma.nps.gov/DataStore/Reference/Profile/2224545?lnv=True. A data dictionary, or other source of attribute information, is accessible at https://doi.org/10.21949/1529046国家公园数据集由美国国家公园管理局（National Park Service，NPS）定期更新，隶属于美国运输部（U.S. Department of Transportation，USDOT）/运输统计局（Bureau of Transportation Statistics，BTS）旗下的国家交通地图集数据库（National Transportation Atlas Database，NTAD）。本数据集涵盖由土地资源处（Land Resources Division）编制的美国国家公园管理局边界数据。美国国家公园管理局第25号局长令规定："应编制土地现状地图，以明确公园单元法定边界内的土地权属。此类标注土地权属与面积的地图，为公园边界内联邦与非联邦土地面积的‘官方备案文件’。尽管此类地图为公园单元法定边界内土地与面积的官方备案材料，但其未达到测绘质量标准，不得用于测绘用途。"因此，本数据集仅可作为地理信息系统（Geographic Information System，GIS）分析的工具，严禁用于工程或法律相关用途。如需获取完整数据集说明，请访问：https://irma.nps.gov/DataStore/Reference/Profile/2224545?lnv=True。可通过https://doi.org/10.21949/1529046获取数据字典或其他属性信息来源。