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

MinnesotaMinnesota

Randy KnippelRandy Knippel

Dakota CountyDakota County

AgendaAgenda

• National Grid MapsNational Grid Maps– Standardized fire mapsStandardized fire maps– Overview of National GridOverview of National Grid

• Web resourcesWeb resources– Places to startPlaces to start– Data and toolsData and tools

• ArcGISArcGIS– Tools, tips, and tricksTools, tips, and tricks

Standardized Fire MapsStandardized Fire Maps

Randy KnippelRandy Knippel

Dakota CountyDakota County

Map BookMap Book

U.S. National GridU.S. National Grid

Map PagesMap Pages

Street IndexStreet Index

Map Map LegendLegend

Map Map IndexIndex

Map Map 74567456

Street Street IndexIndex

Dana Dr.Dana Dr.

PDF Map BookPDF Map Book

Maps OnlineMaps Online(DCGIS)(DCGIS)

MapMapVK75VK75

United States National GridUnited States National Grid(USNG)(USNG)

• National standard since 2001National standard since 2001• Adopted by federal agenciesAdopted by federal agencies

– FEMA, DHS, NGA, USGSFEMA, DHS, NGA, USGS

• Adopted by several statesAdopted by several states– Florida, Missouri, North Carolina, othersFlorida, Missouri, North Carolina, others– Minnesota (March 25, 2009)Minnesota (March 25, 2009)

• Military Grid Referencing SystemMilitary Grid Referencing System– Metric systemMetric system

Why?Why?

• Multiple gridsMultiple grids– Needed one for everyoneNeeded one for everyone

• Need efficient location referencingNeed efficient location referencing

• Need interoperabilityNeed interoperability– Across jurisdictionsAcross jurisdictions– Local, state, federal, militaryLocal, state, federal, military

What about Lat / Long?What about Lat / Long?

• Not intuitiveNot intuitive– Degrees, minutes, secondsDegrees, minutes, seconds

• Several formatsSeveral formats– DMS, DMS.sss, DM.mmm, D.dddDMS, DMS.sss, DM.mmm, D.ddd– LongitudeLongitude

• + / -+ / -• West / eastWest / east• Increases left to rightIncreases left to right

What about Lat / Long?What about Lat / Long?

• How big is a degree?How big is a degree?– It variesIt varies

• 69 miles at the equator69 miles at the equator• Longitude gets smaller toward polesLongitude gets smaller toward poles• 50 miles in Dakota County50 miles in Dakota County

• Distance calculations are difficultDistance calculations are difficult

Grid Zone DesignationGrid Zone Designation 6 x 8 Degrees 6 x 8 Degrees

100 Km Squares100 Km Squares

10 Km Squares10 Km Squares

USNG:15T VK 75USNG:15T VK 75

1 Km Squares1 Km Squares

MapMap74567456

(15T VK 74 56)(15T VK 74 56)

U.S. National GridU.S. National Grid

Three ComponentsThree Components

• 18SUJ233710651918SUJ2337106519

• 18S UJ 23371 0651918S UJ 23371 06519

• 18SUJ2337065118SUJ23370651

MapMapVK75VK75

74567456

741565741565(15T VK 741 565)(15T VK 741 565)

MapMap74567456

(15T VK 74 56)(15T VK 74 56)

Grid Zone DesignationGrid Zone Designation(GZD)(GZD)

100,000 Meter Square100,000 Meter Square

TruncatingTruncating

TruncatingTruncating

USNG:15T VK (100Km square)VK is unique for 800 miles

in any direction

USNG:15T VK (100Km square)VK is unique for 800 miles

in any direction

ScalableScalable

NationalNational

RegionalRegional

LocalLocal

Precision and TruncationPrecision and Truncation

• 18SUJ2337106519 18SUJ2337106519 – 18S UJ 23371 0651918S UJ 23371 06519

• 1 meter precision, full USNG designation1 meter precision, full USNG designation

– UJ2306UJ2306• Assume GZD (18S)Assume GZD (18S)• UJ – 100,000 m precision (100 km square)UJ – 100,000 m precision (100 km square)• 23 06 – 1000 m precision (1 km square)23 06 – 1000 m precision (1 km square)

– 2337 06512337 0651• 10 m precision10 m precision• Assume GZD and 100 km squareAssume GZD and 100 km square

Key ResourcesKey ResourcesCritical InfrastructureCritical Infrastructure

Vulnerable PopulationVulnerable Population

• www.gis.state.mn.uswww.gis.state.mn.us

14TPS14TPS

PS79PS79

70967096

National Spatial Data National Spatial Data Infrastructure (NSDI)Infrastructure (NSDI)

Cooperative Agreement Cooperative Agreement Program (CAP)Program (CAP)

• Category 5: Building data stewardshipCategory 5: Building data stewardship– SchoolsSchools– Hospitals / clinicsHospitals / clinics– Police stationsPolice stations– Fire stationsFire stations

Tying It All TogetherTying It All Together

• Put USNG on maps!Put USNG on maps!

• Define standard map productsDefine standard map products– Seamless across jurisdictions (?)Seamless across jurisdictions (?)

• Include critical assets / key resourcesInclude critical assets / key resources– StructuresStructures

• Create supporting documentsCreate supporting documents

• TrainingTraining

The Romer ScaleThe Romer Scale

Examples – Examples – VK75

• What is at 15T VK 782 571?What is at 15T VK 782 571?– Burnsville City HallBurnsville City Hall

ExamplesExamples

• What is at 15T VK 7389 5116?What is at 15T VK 7389 5116?– small buildingsmall building

ExamplesExamples

• What is at 15T VK 8056 5724?What is at 15T VK 8056 5724?– BuildingBuilding

ExamplesExamples

• Find 15T VK 6890 5362?Find 15T VK 6890 5362?– BuildingBuilding

ExamplesExamples

• What map book pages cover Burnsville What map book pages cover Burnsville Center (35W – 35E interchange)?Center (35W – 35E interchange)?– 76547654– 77547754

Examples - Examples - Mapbook

• What is the USNG 100m square for What is the USNG 100m square for 3309 Dana Dr.?3309 Dana Dr.?– 15T VK 745 56415T VK 745 564

• Find 3309 Dana Dr. on VK75 Find 3309 Dana Dr. on VK75

ExamplesExamples

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

ExamplesExamples

• What is the USNG 100m square for What is the USNG 100m square for 3801 Azalea Pl.?3801 Azalea Pl.?– 15T VK 740 553 15T VK 740 553

ExamplesExamples

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

ExamplesExamples

• What is at 15T VK 743 576?What is at 15T VK 743 576?– Rudy Kraemer Nature PreserveRudy Kraemer Nature Preserve– Trail intersectionsTrail intersections

ExamplesExamples

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