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Standardized Maps Using The U.S. National Grid

Randy Knippel

Dakota County

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GIS For Emergency Management

  • Damage assessment
  • Status
  • Resource deployment

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  • Analysis

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  • Planning

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Maps!�

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Map Books

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U. S. National Grid

  • 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 (MGRS)
    • National Guard
    • All NATO forces

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National Search And Rescue Committee

Federal-level committee formed to coordinate civil search and rescue (SAR)

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Why?

  • Multiple grids
    • Global, State, County, Assumed
    • Needed one for everyone
  • Need efficient location referencing
  • Need interoperability
    • Across jurisdictions
    • Local, state, federal, military

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What about Lat / Long?

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

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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

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7456�(15T VK 74 56)

Map�VK75�(15T VK 7 5)

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741565�(15T VK 741 565)

Map�7456�(15T VK 74 56)

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Read right, then up!

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The Romer Scale

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Read right, then up!

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Exercise – 1K Mapbook

  • What map book pages cover Burnsville Center?
    • 7654
    • 7754

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Exercise – 1K Mapbook

  • What is at 15T VK 758 553?
    • Acorn Park

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Exercise – 10K

  • Find 15T VK 758 553
    • Acorn Park

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Exercise – 1K Mapbook

  • What is at 15T VK 752 563?
    • Edward Neill Elementary

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Exercise – 10K

  • Find 15T VK 752 563
    • Edward Neill Elementary

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Exercise – 1K Mapbook

  • What is at 15T VK 7433 5765?
    • Rudy Kraemer Nature Preserve (Trail intersections)

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Exercise – 10K

  • Find 15T VK 7433 5765
    • Rudy Kraemer Nature Preserve (Trail intersections)

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Exercise – 1K Mapbook

  • What is the USNG 100m square for 3309 Dana Dr.?
    • 15T VK 745 564

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Exercise – 10K

  • Find 3309 Dana Dr.
    • 15T VK 7453 5643

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Exercise – 1K Mapbook

  • Find 3801 Azalea Pl.
    • 15T VK 740 553

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Exercise – 10K

  • Find 3801 Azalea Pl.
    • 15T VK 7402 5534

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Exercise – 1K Mapbook

  • Find 12972 Morgan Pl.
    • 15T VK 757 572

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Exercise – 10K

  • Find 12972 Morgan Pl.
    • 15T VK 7574 5723

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