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Review AECOM’s Local-Res NHD subbasins

Review AECOM’s Local-Res NHD subbasins. Initial Review of AECOM’s RAW data. Visually Review AECOM’s drainage vectors geometry matches aerials drainage density is consistent. QC of AECOM’s completed subbasin. Suite of tools in NHDTools in ArcToolbox Review GNIS names

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Review AECOM’s Local-Res NHD subbasins

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  1. Review AECOM’s Local-Res NHD subbasins

  2. Initial Review of AECOM’s RAW data • Visually Review AECOM’s drainage vectors • geometry matches aerials • drainage density is consistent

  3. QC of AECOM’s completed subbasin • Suite of tools in NHDTools in ArcToolbox • Review GNIS names • Review reachcode delineation • Review attributes on drainage features • In addition to: • Topology (gaps, overlaps) • Artificial paths • Check downstream flow (arc arrows)

  4. QC of AECOM’s completed subbasin Artificial Path Outside of Waterbody NHD Tools

  5. QC of AECOM’s completed subbasin gap

  6. QC of AECOM’s completed subbasin Branched GNIS Name

  7. QC of AECOM’s completed subbasin Gapped GNIS Name

  8. QC of AECOM’s completed subbasin Gapped GNIS Name

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