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Topographic Maps from The National Map. NGAC Meeting February 4, 2009. The National Map. Seamless, continuously maintained, nationally consistent base topographic data Developed and maintained through partnerships Available on-line Source for products and services. Overall Strategy.

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topographic maps from the national map

Topographic Maps from The National Map

NGAC Meeting

February 4, 2009

the national map
The National Map
  • Seamless, continuously maintained, nationally consistent base topographic data
  • Developed and maintained through partnerships
  • Available on-line
  • Source for products and services
slide3

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
slide4

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  • The physical format is GeoPDF, an unpublished and proprietary format that can only be read by specific proprietary software.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.
slide5

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)
slide6

FY09 High-level Workflow

Image Data

Staging

Production Data

Pre-processes

MOD

GeoPDFExport

GeoPDF

Review

Carto

Data

(Grids &

Metadata)

Trans

Review

Name

Conflict

Distribution

Data Quality Review

Job Tracking Extension (JTX) JobManagement

slide7

Image

Data

Image Data

Staging

Staged

Image

Data

MOD

GeoPDFExport

GeoPDF Review

Distribution

GNIS

Annotation

Generation

Annotation Conflict

Carto

Data /

Status

NHD

Cartographic

Data

(Grids &

Metadata)

Labels Conflict

NTD

Roads Review

Status

Data

Job Tracking Extension (JTX) JobManagement

High-level Workflow (level 2)

slide9

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
slide10

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
slide11

Longer-Term Issues

  • Examples of data integration issues

Boundaries and Shorelines

Poor Registration

slide12

Longer-Term Issues

  • Examples of data integration issues

Roads and Railroads to Contours

Poor Registration

slide13

Longer-Term Issues

  • Examples of data integration issues

Roads to Image

Poor Registration

Rural Roads

slide14

Longer-Term Issues

  • Examples of data integration issues

Lidar-Derived Contours to Lakes

Poor Registration

slide15

Longer-Term Issues

  • Examples of data integration issues

Lidar-Derived Contours to Lakes

Temporal Difference?

slide16

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
slide17

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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