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Hydrography FAQs - 9 Found

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Can I download NHD data by either State or Subregion that includes flow tables?

Flow tables are not included in either staged State or Subregion NHD data because very large datasets may exceed an internal two GB processing limit. However, you can process the NHD data and build flow tables locally on your computer. First, download the staged NHD data for your area of interest, and then access the NHD Utilities software which runs under ArcGIS 10.1 or previous versions to build flow tables.

Tags: Maps, Topographic, Recreation, Quadrangle, GeoPDF, Scale