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Practical Applications Of The U.S. National Grid In Minnesota

Practical Applications Of The U.S. National Grid In Minnesota. Randy Knippel Dakota County. Agenda. National Grid Maps Standardized fire maps Overview of National Grid Web resources Places to start Data and tools ArcGIS Tools, tips, and tricks. Standardized Fire Maps. Randy Knippel

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Practical Applications Of The U.S. National Grid In Minnesota

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  1. Practical Applications Of The U.S. National Grid In Minnesota Randy Knippel Dakota County

  2. Agenda • National Grid Maps • Standardized fire maps • Overview of National Grid • Web resources • Places to start • Data and tools • ArcGIS • Tools, tips, and tricks

  3. Standardized Fire Maps Randy Knippel Dakota County

  4. Map Book

  5. U.S. National Grid

  6. Map Pages

  7. Street Index

  8. Map Legend

  9. Map Index

  10. Map 7456

  11. Street Index Dana Dr.

  12. PDF Map Book

  13. Maps Online(DCGIS)

  14. MapVK75

  15. United States National Grid(USNG) • National standard since 2001 • Adopted by federal agencies • FEMA, DHS, NGA, USGS • Adopted by several states • Florida, Missouri, North Carolina, others • Minnesota (March 25, 2009) • Military Grid Referencing System • Metric system

  16. Why? • Multiple grids • Needed one for everyone • Need efficient location referencing • Need interoperability • Across jurisdictions • Local, state, federal, military

  17. What about Lat / Long? • Not intuitive • Degrees, minutes, seconds • Several formats • DMS, DMS.sss, DM.mmm, D.ddd • Longitude • + / - • West / east • Increases left to right

  18. What about Lat / Long? • How big is a degree? • It varies • 69 miles at the equator • Longitude gets smaller toward poles • 50 miles in Dakota County • Distance calculations are difficult

  19. Grid Zone Designation 6 x 8 Degrees

  20. 100 Km Squares

  21. 10 Km Squares USNG:15T VK 75

  22. 1 Km Squares

  23. Map7456(15T VK 74 56)

  24. U.S. National Grid

  25. Three Components • 18SUJ2337106519 • 18S UJ 23371 06519 • 18SUJ23370651

  26. MapVK75 7456

  27. Map7456(15T VK 74 56) 741565(15T VK 741 565)

  28. Grid Zone Designation(GZD)

  29. 100,000 Meter Square

  30. Truncating

  31. Truncating • USNG:15T VK (100Km square) • VK is unique for 800 miles in any direction

  32. Scalable National Regional Local

  33. Precision and Truncation • 18SUJ2337106519 • 18S UJ 23371 06519 • 1 meter precision, full USNG designation • UJ2306 • Assume GZD (18S) • UJ – 100,000 m precision (100 km square) • 23 06 – 1000 m precision (1 km square) • 2337 0651 • 10 m precision • Assume GZD and 100 km square

  34. Key Resources Critical Infrastructure Vulnerable Population

  35. www.gis.state.mn.us 14TPS 7096 PS79

  36. National Spatial Data Infrastructure (NSDI)Cooperative Agreement Program (CAP) • Category 5: Building data stewardship • Schools • Hospitals / clinics • Police stations • Fire stations

  37. Tying It All Together • Put USNG on maps! • Define standard map products • Seamless across jurisdictions (?) • Include critical assets / key resources • Structures • Create supporting documents • Training

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