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US NATIONAL GRID

Learn about the importance of standardized grids like USNG for precise location reporting. Explore the shortcomings of current systems and why USNG offers a practical solution. Dive into the anatomy of a USNG coordinate and practical exercises to enhance understanding.

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US NATIONAL GRID

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  1. US NATIONAL GRID USNG

  2. United States National Grid Lessons learned have taught us that standardized grids are needed for positional reporting. As far back as Hurricane Andrew, problems were recognized for emergency managers... USNG

  3. What’s wrong with current systems? We already have… Latitude/Longitude Township/Range/Section Street Address and Zip UTM USNG

  4. Latitude/Longitude Multiple formats are confusing DD -85.990151, 30.272240 DM -85 59.409089, 30.16.334386 DMS 85 59’24.545”W, 3020.063”N All the same location!!! USNG

  5. How far is a second anyway? What is the distance from…. 85 59’24.545”W, 30 16’20.063”N To here…. 85 59’26.292”W, 30 16’14.546”N USNG

  6. Worse yet… What is the distance from -85.990443, 30.275358 To here…. 85 59.364547, 30 16.504539 USNG

  7. Township/Range/Section Township/Range/Section grid from the Public Lands Survey System is an important and good system… basis of land ownership records been in use for over 180 years USNG

  8. Township/Range/Section But a perfect section really doesn’t exist irregular in coastal areas too large to meet needs of ground crews USNG

  9. Street Address and Zip Problematic due to… rural routes post office boxes USNG

  10. What do you do when the SIGNS are gone? USNG

  11. What do you do when the ROADS are gone? USNG

  12. Anatomy of a USNG Coordinate 100,000m Square Grid Coordinate 17R NJ 7263 6578 Grid Zone Designator Easting Northing USNG

  13. 17R Grid Zone Designator 6 Degrees X 8 Degrees USNG

  14. 17R NJ 100,000m grids USNG

  15. 1,000m Grids RIGHT UP USNG

  16. 17R NJ 65 72 1,000m Grids 4 DIGIT 1,000m UP RIGHT USNG

  17. 17R NJ 65 72 UP 0 RIGHT USNG

  18. 17R NJ 65 72 0 USNG

  19. 17R NJ 65 7 72 6 6 DIGIT 100 meter RIGHT UP 0 USNG

  20. 17R NJ 65 72 100 UNITS 0 USNG 10 UNITS

  21. 17R NJ 65 74 72 63 8 DIGIT 10 meter RIGHT UP 0 USNG

  22. Review • Grid Zone 17R • 100,000m 17R NJ • 4 digit = 1,000m 17R NJ 72 65 • 6 digit = 100m 17R NJ 726 657 • 8 digit = 10m 17R NJ 7262 6578 • RIGHT (Easting) - UP (Northing) USNG

  23. Practical Exercise USNG

  24. Read right, and up. Building at grid: 145 100 USNG Ex 1 ppt

  25. ppt Building at grid: 1282 1122 USNG Ex 1

  26. Read right, and up. ppt Building at grid: 1210 1109 USNG Ex 2

  27. Read right, and up. ppt Road Intersection at grid: 1318 0978 USNG Ex 3

  28. Read right, and up. ppt Building at grid: 1448 0992 USNG Ex 4

  29. ppt Building at grid: 1215 0924 USNG Ex 5

  30. Practical Exercise(Camp Blanding Map) • Locate the 8 digit coordinate for the 7 points on your map

  31. 17R MP 05361516 17R MP 04521665 17R MP 04731701 17R MP 05211585 17R MP 05401551 17R MP 06321356 17R MP 04821445 USNG

  32. USNG

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