Subwatersheds (HU12)

This dataset includes subwatersheds (12-digit HU) that are contained by a subbasin that overlaps the 16-county NCTCOG region. This dataset consists of geo-referenced digital data and associated attributes created in accordance with the "FGDC Proposal, Version 1.0 - Federal Standards for Delineation of Hydrologic Unit Boundaries 3/01/02 (http://www.fgdc.gov/standards/projects/FGDC-standards-projects/hydro-unit-boundaries/ ). For original metadata, go to http://datagateway.nrcs.usda.gov/. This dataset was downloaded from http://nhd.usgs.gov/data.html and processed but otherwise unaltered. This file is for reference use only. NCTCOG and its members are not responsible for errors or inaccuracies in the file.

本数据集包含与覆盖16个县的北德克萨斯中部政府委员会（North Central Texas Council of Governments，简称NCTCOG）辖区存在重叠的子汇水盆地所包含的子流域（12位水文单元，Hydrologic Unit，简称HU）。本数据集包含地理参考数字数据及关联属性，其编制遵循《联邦地理数据委员会（Federal Geographic Data Committee，FGDC）提案1.0版——水文单元边界划定联邦标准》（2002年3月1日，http://www.fgdc.gov/standards/projects/FGDC-standards-projects/hydro-unit-boundaries/ ）。如需获取原始元数据，请访问：http://datagateway.nrcs.usda.gov/。本数据集从http://nhd.usgs.gov/data.html 下载并经过处理，未作其他修改。本文件仅用于参考用途。北德克萨斯中部政府委员会及其成员不对本文件中的错误或不准确信息承担责任。