Nonroad developed land in the United States Pacific Northwest for 2001 summarized for NHDPlus v2 catchments

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This spatial data set was created by the U.S. Geological Survey (USGS) to represent the area of non-road developed land within each incremental watershed delineated in the NHDPlus v2 dataset in the Pacific Northwest region of the United States (Hydro Region 17; Major River Basin 7 (MRB7)) in 2001.

本批数据的发布时间早于美国地质调查局（U.S. Geological Survey, USGS）科学数据审核、批准及发布政策的生效日期——2016年10月1日，该政策详见《USGS调查手册第502.8章：基础科学实践：科学数据发布的审核与批准》。本空间数据集由美国地质调查局（USGS）于2001年构建，旨在表征美国太平洋西北地区（水文区域17；大型流域7，即MRB7）内，NHDPlus v2数据集所勾勒的每个增量汇水区内的非道路开发土地面积。