University of Florida GeoPlan Center 20070426 vector digital data Gainesville, FL University of Florida GeoPlan Center State of Florida www.fgdl.org This layer represents a 1,000 by 1,000 meter United States National Grid (USNG) for Florida. The USNG is an alpha-numeric reference system based on the UTM coordinate system and is similar to the Military Grid Reference System. Use of the USNG ensures a uniform grid mapping and positional reporting system for search and rescue, emergency planning, response, and recovery. The grid serves as a common means for providing locational information in relation to USNG coordinates. How to Read a United States National Grid (USNG) Spatial Address http://www.fgdc.gov/usng/how-to-read-usng/index_html --------------------------------------------------------------- The USNG is an alpha-numeric reference system that overlays the UTM coordinate system. A USNG spatial address is broken down into three parts, the; - Grid Zone Designation; for a world-wide unique address. - 100,000-meter Square Identification; for regional areas. - Grid Coordinates; for local areas. 4 digits - 2306 - locates a point with a precision of 1,000-meters (a neighborhood size area). 6 digits - 234064 - locates a point with a precision of 100-meters (a soccer field size area). 8 digits - 23480647 - locates a point with a precision of 10-meters (the size of a modest home). 10 digits - 2348306479 - locates a point with a precision of 1-meter (within a parking spot). To review, we can see a complete US National Grid spatial address contains three parts as we drill down to a unique location, 18S UJ 23480647 - Grid Zone Designation (i.e. 18S). - 100,000-meter Square Identification (i.e. UJ ). - Grid coordinates of some even number of digits ranging from 2 to 10 (i.e. 23480647 In this case, eight digits identify a place of about the size of a modest home.). You always read right, then up when plotting coordinates. A spatial address is customarily written as a single string of values. Note how the horizontal datum (NAD 83) has been included: USNG: 18SUJ23480647 (NAD 83) Floridadisaster.org --------------------------------------------------------------- In an effort to standardize maps in Florida for both emergency and other operations, the State Fire Marshal, as the coordinating agency for search and rescue under the State Comprehensive Emergency Management Plan, and the Division of Emergency Management are embarking on a program to adopt the US National Grid (USNG) as the standard in Florida. This project will ensure a uniform grid mapping system across cities and counties in Florida, and will match the system used by the National Guard, the US Coast Guard and the US military when they are deployed into our state. Florida’s unique geography of miles of coastlines, multiple river corridors, and large watersheds make the use of the common Township/Range/Section grid (PLSS) all but impossible except for a handful of inland counties. As the grid approaches wetlands, river corridors and the coast line, sections become irregular in shape and can be significantly larger than the typical square mile, which is too large to accommodate the needs of ground crews. Adoption of a national grid system has been identified as ‘critical’ in a number of after action reports, investigations and studies dating as far back as Hurricane Andrew. FEMA, DHS, the National GeoSpatial Intelligence Agency, and the Federal Geographic Data Committee all promote the adoption of the USNG. Grid cell values are unique and sequentially numbered. 20070426 publication date Complete As needed -88.129231 -79.740823 31.687876 24.345582 ISO 19115 Topic Cateogory location boundaries None index emergency management national grid usng None Florida None THE DATA INCLUDED IN FGDL ARE 'AS IS' AND SHOULD NOT BE CONSTRUED AS LEGALLY BINDING. THE UNIVERSITY OF FLORIDA GEOPLAN CENTER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED AS A RESULT OF USING, MODIFYING, CONTRIBUTING OR DISTRIBUTING THE MATERIALS. A note about data scale: Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modeling purposes. Please be sure you are using the best available data. 1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries. 1:100000 scale datasets are recommended for projects that are at the multi-county or regional level. 1:125000 scale datasets are recommended for projects that are at the regional or state level or larger. Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analysis. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our webpage at: http://geoplan.ufl.edu/education.html Florida Geographic Data Library (FGDL) mailing

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Gainesville Florida 32611-5706 FGDL Frequently Asked Questions: http://www.fgdl.org/fgdlfaq.html For FGDL Software: http://www.fgdl.org/software.html FGDL Mailing Lists: http://www.fgdl.org/fgdl-l.html Web site: http://www.fgdl.org Technical Support: http://www.fgdl.org/fgdlfeed.html None. Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595 Florida State Emergency Response Team United States National Grid http://floridadisaster.org/gis/usng/ Guidelines for Building US National Grid Polygons with ArcGIS http://floridadisaster.org/gis/usng/Documents/build_usng_polygons.pdf GeoPlan relied on the integrity of the attribute information within the original data. This data is provided 'as is'. GeoPlan relied on the integrity of the original data layer's topology This data is provided 'as is' by GeoPlan and is complete to our knowledge. The grid's horizontal accuracy was mathematically generated and is accurate to the internal precision of ArcGIS 9.2 coordinates. The grid's vertical accuracy was mathematically generated and is accurate to the internal precision of ArcGIS 9.2 coordinates. 0 None 20070426 publication date Spatial and Attribute Information The University of Florida GeoPlan Center produced a grid in an ArcMap data viewer with the coordinate system set to NAD_83_UTM_Zone_17N. A 1,000-meter by 1,000 grid was generated, using the XTools Fishnet function and covering the area of Florida contained within the UTM 17 N zone. Overlap was included for use in neighboring areas. Next the XTools Add XY function was used to produce X and Y coordinates for each polygon. Added fields: X_LWRLFT, Y_LWRLFT, GRID100K, GRID10K, GRID1000M, LABEL, DESCRIPT, FGDLAQDATE, and AUTOID. Calculated the AUTOID field as follows; [FID] + 1 Created Centroids for the 1000M Grid and spatially joined it to the existing usng_fl_10k_utm17.shp Grid. Joined the Centroids with the 10K Grid information back to the 1000M Grid, via a table join based on AUTOID. Calculated the GRID100K field based on the joined GRID100K field from the Centroids. Calculated the GRID10K field based on the joined GRID10K field from the Centroids. Calculate X_LWRLFT and Y_LWRLFT values as follows; Round ( [XCOORD] - 500, 0 ) Round ( [YCOORD] - 500, 0 ) After these calculations, the XCOORD and YCOORD fields may be deleted. Calculate GRID1000M as follows; Mid ( [X_LWRLFT] , 2, 2 ) + " " + Mid ( [Y_LWRLFT] , 3 ,2 ) Calculate LABEL as follows; [GRID100K] + " " + Mid ( [X_LWRLFT] , 2, 2 ) + Mid ( [Y_LWRLFT] , 3 ,2 ) Calculated DESCRIPT based on LABEL. After field calculations were completed the join was removed. For more information on field calculations please see Guidelines for Building US National Grid Polygons with ArcGIS http://floridadisaster.org/gis/usng/Documents/build_usng_polygons.pdf GeoPlan 20070426 The University of Florida GeoPlan Center then brought the two UTM 1K Grids into an ArcMap data viewer with the coordinate system set to FGDL Albers. Next the UTM Zone 17N and UTM Zone 16N shapefiles were reprojected to the FGDL Albers projection (NAD83 Albers HPGH). Next selections were taken from each UTM zone where as they did not interest each other. These two selections were then appended together to create a statewide layer where areas containing the over lap contained no data. Next each zone was selected for where features overlaped each zone and these overlap features were exported for each shapefile. Each exported zones over lap features were then erased, this erase was base on features falling outside their designated 100K grid, this erase was based on the usgn_fl_100k.shp Next the remaining parts of the two erased zone shapefiles were appended back to the statewide 1K layer creating a continuous statewide 1K layer. GeoPlan 20070426 The University of Florida GeoPlan Center produced a grid in an ArcMap data viewer with the coordinate system set to NAD_83_UTM_Zone_16N. A 1,000-meter by 1,000 grid was generated, using the XTools Fishnet function and covering the area of Florida contained within the UTM 16 N zone. Overlap was included for use in neighboring areas. Next the XTools Add XY function was used to produce X and Y coordinates for each polygon. Added fields: X_LWRLFT, Y_LWRLFT, GRID100K, GRID10K, GRID1000M, LABEL, DESCRIPT, FGDLAQDATE, and AUTOID. Calculated the AUTOID field as follows; [FID] + 250,001 Created Centroids for the 1000M Grid and spatially joined it to the existing usng_fl_10k_utm16.shp Grid. Joined the Centroids with the 10K Grid information back to the 1000M Grid, via a table join based on AUTOID. Calculated the GRID100K field based on the joined GRID100K field from the Centroids. Calculated the GRID10K field based on the joined GRID10K field from the Centroids. Calculate X_LWRLFT and Y_LWRLFT values as follows; Round ( [XCOORD] - 500, 0 ) Round ( [YCOORD] - 500, 0 ) After these calculations, the XCOORD and YCOORD fields may be deleted. Calculate GRID1000M as follows; Mid ( [X_LWRLFT] , 2, 2 ) + " " + Mid ( [Y_LWRLFT] , 3 ,2 ) Calculate LABEL as follows; [GRID100K] + " " + Mid ( [X_LWRLFT] , 2, 2 ) + Mid ( [Y_LWRLFT] , 3 ,2 ) Calculated DESCRIPT based on LABEL. After field calculations were completed the join was removed. For more information on field calculations please see Guidelines for Building US National Grid Polygons with ArcGIS http://floridadisaster.org/gis/usng/Documents/build_usng_polygons.pdf GeoPlan 20070426 Vector GT-polygon composed of chains 363506 NAD 1983 HARN Florida GDL Albers 24.0 31.5 -84.0 24.0 400000.0 0.0 coordinate pair 0.0001 0.0001 meter D North American 1983 HARN GRS 1980 6378137.0 298.257222101 USNG_FL_1K USNG_FL_1K.DBF GeoPlan OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. X_LWRLFT X coordinate of the lower left hand corner of the polygon. FDEM Y_LWRLFT Y coordinate of the lower left hand corner of the polygon. FDEM GRID100K 100,000-meter Square Identification; for regional areas, identified by two letter values. FDEM GRID10K 10,000-meter grid label for the local area. FDEM GRID1000M 1,000-meter grid label for the local area. FDEM LABEL Concatenated 100K grid label and 1000 meter grid label. FDEM DESCRIPT Based on LABEL. GeoPlan FGDLAQDATE The date FGDL acquired the data from the source. GeoPlan AUTOID GeoPlan internal feature identification number. GeoPlan SHAPE Feature geometry. ESRI Coordinates defining the features. SHAPE.AREA Area in meters GeoPlan SHAPE.LEN Perimeter in meters GeoPlan Florida Geographic Data Library (FGDL) mailing

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Gainesville Florida 32611-5706 US For FGDL Software: http://www.fgdl.org/software.html Web site: http://www.fgdl.org FGDL Frequently Asked Questions: http://www.fgdl.org/fgdlfaq.html Technical Support: http://www.fgdl.org/fgdlfeed.html Mailing list for FGDL: http://www.fgdl.org/fgdl-l.html DOWNLOADABLE DATA THE FGDL DATA AS PROVIDED BY CONTRIBUTING ORGANIZATIONS AND ANY PROGRAMMING SOFTWARE CREATED BY THE UNIVERSITY OF FLORIDA GEOPLAN CENTER (COLLECTIVELY THE 'MATERIALS') ARE COPYRIGHTED BY THE UNIVERSITY OF FLORIDA GEOPLAN CENTER FOR THE FGDL CONTRIBUTING AGENCIES AND ORGANIZATIONS (THE 'DATA PROVIDERS'). DO NOT REPRODUCE, REDISTRIBUTE OR RESELL THE MATERIALS, OR PROVIDE THE MATERIALS FOR FREE TO CUSTOMERS OR CLIENTS, OR PLACE THE MATERIALS FOR DOWNLOAD ON A WEBSITE. ADDITIONALLY, WHEN USING FGDL DATA OR SOFTWARE IN PROJECTS, MAPS, ETC.; YOU AGREE TO ACKNOWLEDGE THE FGDL AS A DATA SOURCE. THE MATERIALS ARE PROVIDED 'AS IS'. THE UNIVERSITY OF FLORIDA GEOPLAN CENTER MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE QUALITY OR SUITABILITY OF THE MATERIALS, EITHER EXPRESSLY OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. THE UNIVERSITY OF FLORIDA GEOPLAN CENTER MAKES NO WARRANTIES, GUARANTIES OR REPRESENTATIONS AS TO THE TRUTH, ACCURACY OR COMPLETENESS OF THE DATA PROVIDED BY THE FGDL CONTRIBUTING ORGANIZATIONS. THE UNIVERSITY OF FLORIDA GEOPLAN CENTER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED AS A RESULT OF USING, MODIFYING, CONTRIBUTING OR DISTRIBUTING THE MATERIALS. 20200302 University of Florida GeoPlan Center mailing and physical

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Gainesville FL 32611 US data@fgdl.org www.fgdl.org FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time