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U.S. Department of the Interior U.S. Geological Survey Topographic Maps from The National Map NGAC Meeting February 4, 2009
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The National Map Seamless, continuously maintained, nationally consistent base topographic data Developed and maintained through partnerships Available on-line Source for products and services
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Overall Strategy Create next-generation USGS topographic maps 3 year revision cycle following NAIP Source data from The National Map databases National Transportation Dataset (from Census initially) Names (GNIS, NHD) Cartographic features (Grids, quad level metadata) Initial product will be basic e-Topo Image Map content Image background Roads Names 1:24,000-scale layout Map Product evolution Data layers will be added as they become available and technical processes are in place Elevation data (contours) and Hydrography highest priority
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Product Characteristics (It’s not your grandfather’s topographic map) The product is a plottable digital image. It is neither a GIS dataset nor a traditional paper map, but a new kind of hybrid. The physical format is GeoPDF, an unpublished and proprietary format that can only be read by specific proprietary software. The PDF is layered and georeferenced, giving the dataset some limited GIS characteristics.
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FY09 Goals and Preparation Produce 15,250 e-Topo Image Maps and make them available through the USGS Map Store Initial product will be basic e-Topo Image Map content Image background Roads Names 24K layout Processes will be managed with Job Tracking Extension (JTX) Multiple parent and child jobs Can be extended to future product(s) Begin production of AOI phase 1 cartographic data Grids (UTM, state plane, geographic)
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FY09 High-level Workflow Image Data Staging Production Data Pre-processes Carto Data (Grids & Metadata) Trans Review Name Conflict MOD GeoPDF Export GeoPDF Review Distribution Job Tracking Extension (JTX) Job Management Data Quality Review
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High-level Workflow (level 2) Cartographic Data (Grids & Metadata) MOD GeoPDF Export Distribution Job Tracking Extension (JTX) Job Management Annotation Generation NHD GNIS NTD Image Data Carto Data / Status Image Data Staging Annotation Conflict Labels Conflict Roads Review Status GeoPDF Review Staged Image Data
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Near-Term Issues Short-term ramp-up to get to 15,250 maps/year Standard is still in review/approval process E-Topo and Image map standard becoming one standard Data availability to NGTOC locations 1-meter NAIP imagery, leaf on FY2008 NAIP is not available yet so use FY2007 DOI & USGS now a funding partner to NAIP NAIP is in quarter-quad format Workflow development
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Longer-Term Issues Data completeness, quality, currency In many cases, there are no national, public domain data sources available for 1:24,000-scale mapping Boundaries PLSS Structures Transportation (roads, other trans features) Data integration between themes
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Longer-Term Issues Examples of data integration issues Poor Registration Boundaries and Shorelines
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Longer-Term Issues Examples of data integration issues Roads and Railroads to Contours Poor Registration
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Longer-Term Issues Examples of data integration issues Roads to Image Poor Registration Rural Roads
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Longer-Term Issues Examples of data integration issues Lidar-Derived Contours to Lakes Poor Registration
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Longer-Term Issues Examples of data integration issues Lidar-Derived Contours to Lakes Temporal Difference?
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Approach to resolving data integration issues Inventory and document the types and prevalence of issues Focus on adding layers to product as data are ready for inclusion Develop approach and process for integrating hydrography and elevation in FY09 Begin to add these data to the map products in FY10
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Summary The next generation USGS topographic map product will evolve and improve, in terms of content and quality Near-term challenges include defining the product and putting processes in place to produce in quantity; automation is critical to making this work within existing resources Longer-term challenges are data-oriented, including consistency, currency, completeness, especially in themes that are not USGS’ A-16 responsibility
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