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Source Data Prep for Indiana’s NHD Local-Res Production

Source Data Prep for Indiana’s NHD Local-Res Production. Provide High-Res NHD from USGS. Provide High-Res NHD from USGS. NHD Stewardship Site. Provide 2005 Orthoimagery/DEM or newer. Provide ancillary data. Local city/county/regional Orthos /DEM Local hydro and stormwater data

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Source Data Prep for Indiana’s NHD Local-Res Production

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  1. Source Data Prep for Indiana’s NHD Local-Res Production

  2. Provide High-Res NHD from USGS

  3. Provide High-Res NHD from USGS NHD Stewardship Site

  4. Provide 2005 Orthoimagery/DEM or newer

  5. Provide ancillary data • Local city/county/regional Orthos/DEM • Local hydro and stormwater data • State reference layers: • Dams • Wetlands • Karst

  6. QC of USGS High-Res subbasins • Using NHDToolbox in ArcGIS • Review GNIS names • Review reachcode attributes

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