scounty100: County boundaries of the Southern United States at 1:100,000 scale

This coverage was identified on the USGS Water Resources NSDI Node site at https://nsdi.usgs.gov. The coverage contains the county boundaries of the continental United States. These boundaries were derived from the Digital Line Graph (DLG) files representing the 1:100,000 scale map in the National Atlas of the United States. The data was then modified by USDA Forest Service Personnel for use in the Southern Forest Resource Assessment and exported to a shapefile.This shapefile is used as a base map for a variety of applications.Metadata was updated 10/1/2009 when data became available through this archive, and again on 2/8/2011 to add a DOI to citation. Data were not altered. Minor metadata updates made on 4/18/2013, 12/20/2016, and 09/09/2021.

Data were originally made available at https://www.srs.fs.usda.gov/sustain/data/.

本覆盖范围由美国地质调查局水资源国家空间数据基础设施节点网站（https://nsdi.usgs.gov）识别。该覆盖范围包含了美国大陆的县界。这些边界源自于代表美国国家大地图1:100,000比例尺的数字线图（DLG）文件。数据随后由美国农业部林业服务人员修改，以用于南方森林资源评估，并导出为shapefile格式。此shapefile被用作多种应用的底图。当数据通过此存档可用时，元数据于2009年10月1日进行了更新，并于2011年2月8日再次更新，以添加引用的DOI。数据未进行修改。在2013年4月18日、2016年12月20日和2021年9月9日进行了微小的元数据更新。原始数据可在https://www.srs.fs.usda.gov/sustain/data/获取。