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NHD Revisions Best Practices

NHD Revisions Best Practices. InterMountain GIS 2014 NHD Workshop April 7, 2014. NHD User Guide. http://nhd.usgs.gov/userguide.html. Example: StreamRiver. Feature Template. Editing Best Practices. Digitization scale: 1:5,000 or 1:8,000 Use snapping

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NHD Revisions Best Practices

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  1. NHD Revisions Best Practices InterMountain GIS 2014 NHD Workshop April 7, 2014

  2. NHD User Guide http://nhd.usgs.gov/userguide.html

  3. Example: StreamRiver

  4. Feature Template

  5. Editing Best Practices • Digitization scale: 1:5,000 or 1:8,000 • Use snapping • Use multiple ancillary data layers to inform decisions: • National Wetlands Inventory • USGSTopo • Multiple aerial imagery years, both Normal Color and Color-Infrared (CIR)

  6. Average Conditions NAIP 2005 CIR NAIP 2011 CIR NAIP 2009 CIR

  7. NAIP 2005 CIR NAIP 2011 CIR NAIP 2009 CIR

  8. Metadata • Document editing processes and standards in the metadata: • Digitization scale • Imagery year digitized to, if specific • Ancillary layers used

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