standardized fire maps randy knippel dan castaneda dakota county office of gis
TRANSCRIPT
Standardized Fire MapsStandardized Fire Maps
Randy KnippelRandy Knippel
Dan CastanedaDan Castaneda
Dakota County Office of GISDakota County Office of GIS
Map BookMap Book
U.S. National GridU.S. National Grid
Map PagesMap Pages
Street IndexStreet Index
Map Map LegendLegend
Map Map IndexIndex
Map Map 84548454
Street Street IndexIndex
Forest Ln.Forest Ln.
PDF Map BookPDF Map Book
Maps OnlineMaps Online(DCGIS)(DCGIS)
MapMapVK85VK85
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 right to leftIncreases right to left
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 85USNG:15T VK 85
1 Km Squares1 Km Squares
USNG:15T VK 75USNG:15T VK 75
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
841546841546(15T VK 841 546)(15T VK 841 546)
MapMap84548454
(15T VK 84 54)(15T VK 84 54)
Grid Zone DesignationGrid Zone Designation(GZD)(GZD)
100,000 Meter Square100,000 Meter Square
TruncatingTruncating
Key ResourcesKey ResourcesCritical InfrastructureCritical Infrastructure
Vulnerable PopulationVulnerable Population
ExamplesExamples
• What map book page includes Eastview What map book page includes Eastview High School?High School?– 84548454
ExamplesExamples
• What is the map book page for 14105 What is the map book page for 14105 Forest Ln.?Forest Ln.?– 84548454
ExamplesExamples
• What is the USNG 100m square for What is the USNG 100m square for 14105 Forest Ln.?14105 Forest Ln.?– 15T VK 841 546 15T VK 841 546
ExamplesExamples
• What is at 15T VK 842 542?What is at 15T VK 842 542?– Trail entrance to Cedar Isle ParkTrail entrance to Cedar Isle Park
ExamplesExamples
• What is the USNG 100m square for What is the USNG 100m square for 13282 Findlay Way?13282 Findlay Way?– 15T VK 845 55815T VK 845 558
ExamplesExamples
• What is at 15T VK 858 545?What is at 15T VK 858 545?– Scott Highlands Middle SchoolScott Highlands Middle School
ExamplesExamples
• What is at 15T VK 853 551?What is at 15T VK 853 551?– Moeller ParkMoeller Park– Trail intersectionsTrail intersections
ExamplesExamples
• Find 6565 134Find 6565 134thth Ct. W. Ct. W.– 15T VK 842 55815T VK 842 558