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The Tennessee Base Mapping Program

The Tennessee Base Mapping Program. Dennis Pedersen, Director OIR – GIS Services. “Moving Forward”. TNBMP…Moving Forward. Initial Production Complete Ortho Imagery Pilot Program TDOT Partnership Enterprise GIS – TNMap. TNBMP…Moving Forward. Let’s take a look back….

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The Tennessee Base Mapping Program

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  1. The Tennessee Base Mapping Program Dennis Pedersen, DirectorOIR – GIS Services “Moving Forward”

  2. TNBMP…Moving Forward • Initial Production Complete • Ortho Imagery Pilot Program • TDOT Partnership • Enterprise GIS – TNMap

  3. TNBMP…Moving Forward Let’s take a look back…

  4. TN Base Mapping Program Pilot Counties – 1997, 1998

  5. Milestones/AccomplishmentsA few quick facts: • Collaboration/Local partnerships • $5 million in contracts • 250+ organizations in 57 counties • Leveraged existing data in 6 counties • Local GIS maintenance in 45 counties

  6. TN Base Mapping Program/E911: • State ECB Board – “Wireless Phase II Mapping Minimum 911 Software & Data Requirements” February 1, 2002 • Minimum Layers defined: • Street centerlines with complete address attributes • Point landmarks – churches, schools, hospitals, cemeteries, government bldgs. • Area landmarks – parks, airports, military bases • Fire Hydrants and Stations • Water features • Administrative boundaries – city, county, state • ESN boundaries • Digital Ortho photos

  7. Imagery Update/Maintenance • Initial statewide production complete • Ortho Imagery is 7 years old in some counties • Population growth/development driving demand for new imagery • Need a plan for ortho imagery update/maintenance

  8. Sustainable Ortho Imagery Principles • Cost effective approach that meets needs of State and local users • Leverage federal funding to help reduce or eliminate duplication of effort • Regional or Statewide acquisition • County by county more expensive/inefficient • Eliminate production of overlapping map sheets • Develop set schedule for updates • Examine State/local cost share

  9. Imagery Maintenance Strategies • Secure Funding to support ortho pilot • Extended current contract to 10/08 and modified specs to emulate “Imagery for the Nation” and local requirements • Identify counties with significant growth, imagery that is outdated, TDOT region 1 (upper East TN) • Continue operating under current cost share model (75% State / 25% local)

  10. Ortho Maintenance Pilot Program2007-2008

  11. TNBMP – Digital Terrain Model

  12. Dept. of Transportation • Existing analog aerial photography program • Large scale engineering projects (site specific) • Right-of-way corridor studies • Regional planning efforts • Need to develop or enhance internal processes for using new technology • Identified need to update current photogrammetry processes • Completed “Gap” analysis to provide detailed recommendations

  13. OIR-GIS/TDOT - Partnership • TDOT Modernizing Equipment • Digital camera suitable for ortho photo production • Training staff on new photogrammetry production req. • ortho acquisition for ¼ of State annually • OIR-GISresponsiblefordata hosting and distribution • TNMap enterprise GIS • Dissemination to local government • 2008 Acquisition: Region 4 (West TN)

  14. TDOT Federal State Sustainable Tennessee Ortho-Maintenance Program IFTN OIR-GIS Local Gov Future Current Aerial Surveys Standards/Funding T N B M P

  15. Sustainable Ortho Imagery Principles • Cost effective approach that meets needs of State and local users • Leverage federal funding to help reduce or eliminate duplication of effort • Regional or Statewide acquisition • County by county more expensive/inefficient • Eliminate production of overlapping map sheets • Develop set schedule for updates • 4 year cycle • Revisit State/local cost share

  16. TNBMP…Moving Forward • State will provide local government with updated ortho imagery – 4 year cycle • Local gov. will provide the State with updated parcels, street centerline GIS data • Counties with new imagery (2007 or 2008): • Local cost share is 25% of parcels only

  17. TNBMP…Moving Forward • Vision: Maintain a statewide GIS base map through partnership development that can be used in support of a wide range of local, state, and federal programs

  18. TNBMP…Moving Forward http://tnmap.state.tn.us/portal http://gis.state.tn.us

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