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GIS Data Availability Survey

GIS Data Availability Survey. Highlights (preliminary observations) Large number of data producers Handful of 1 st generation delivery orders in progress All agree to supply data for flood mapping Actual data formats, projection, & datum will vary

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GIS Data Availability Survey

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  1. GIS Data Availability Survey • Highlights (preliminary observations) • Large number of data producers • Handful of 1st generation delivery orders in progress • All agree to supply data for flood mapping • Actual data formats, projection, & datum will vary • All data not necessarily off-the shelf but are derivable • Previous two observations will be challenges for efficient base mapping collection process

  2. GIS Data Availability Survey • Highlights (observed comments/issues) • Use local tiling schemes (example: 1”=400’ scale, 10k x 10k tile for base map) • Use English units of measurement • Give ample time to prepare data for CGIA

  3. GIS Data Availability Survey • Survey Background • Primarily based on 1997 state-wide county survey conducted by SGUC/NCDOT and the NSGIC/SMAC NSDI Framework Data Survey • Involves input from the Statewide Mapping Advisory Committee (SMAC) • Mailed to counties and municipalities in the 6 eastern river basins

  4. GIS Data Availability Survey • Survey process . . • Use and update existing Framework Data contacts database (115 reps statewide) • Call contacts once scoping meeting is scheduled • Fax or email survey instrument • Schedule appointment with contact • Determine if other local contacts exist

  5. GIS Data Availability Survey • Survey Specifics • Comprehensive – asks detailed questions about hardware, software, data distribution, and related policy • Contains specific questions for base map data layers (county boundaries, orthophotography, hydrography, etc.) • Survey responses are input into a computer program tool…

  6. NC Floodplain Mapping Program Computer program designed to store survey information

  7. Computer Program Background • Developed by Dewberry & Davis LLC • Created as a way to log survey responses in a computer database • Stores data in Microsoft Access • Format and questions are identical to mailed survey

  8. Some results from the survey…

  9. Survey Status - Counties

  10. Orthophotography Status

  11. Transportation Status

  12. Cadastral Status

  13. Surface Waters Status

  14. Elevation Status

  15. Survey Status - Municipalities Burlington Carrboro Chapel Hill Elizabethtown Garner Graham Jacksonville Knightdale Morrisville North Topsail Beach Princeville Rocky Mount Rolesville Tarboro Wake Forest Zebulon Camp Lejeune

  16. Next Steps • Complete surveys for 6 basins – Jan 31 • Enter all results into database – Jan 31 • Showcase results • Web Map/Data Site, Reports, Other? • Survey 11 remaining basins – June 30

  17. GIS Survey Scoping Team Jeff Brown David Giordano Tim Johnson Zsolt Nagy Ken Shaffer Tom Tribble Terry Ellis Forrest Robson Bill Miller Rob Allen Steve Morris James Sanborn Sue Hoegberg

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