Many datasets have been freely available, particularly derived data such as digital elevation models, contours, hydrography, land cover, names, and boundaries More recently, data that were sold to the public are being made available for free download (topographic maps, some aerial photographs, and Landsat scenes) Data Generation and Access

1. U.S. Department of the Interior
U.S. Geological Survey
U.S. Geological Survey and
National Open Data
National Data Availability

2. National Geospatial Program
 In 2009, USGS celebrated the 125th anniversary of its
national program for topographic mapping (1884-
2009)
 2010 – Launch of the new type of topographic map:
US Topo, joining numerous other digital geospatial
products
125 Years of Topographic Mapping

3. National Geospatial Program
 Many datasets have been freely available, particularly
derived data such as digital elevation models,
contours, hydrography, land cover, names, and
boundaries
 More recently, data that were sold to the public are
being made available for free download (topographic
maps, some aerial photographs, and Landsat scenes)
Data Generation and Access

4. National Geospatial Program
 Eight National Themes
 Elevation – 3D Elevation Program (3DEP)
 Hydrography – National Hydrography Dataset (with Watershed
Boundary Dataset)
 Transportation – roads from US Census TIGER files and US Forest
Service
 Boundaries – National Boundaries Dataset (via partnerships)
 Names – Geographic Names Information System
 Orthoimagery – National Agriculture Imagery Program (NAIP) and
urban imagery
 Structures – National Structures Dataset (includes crowdsourcing)
 Land cover – National Land Cover Dataset
The National Map

5. National Geospatial Program
 Built from The National
Map data
 Digital
 GeoPDF® format
 Available free on the
Web
 Image base
 Core feature layers
 Regular updates
US Topo
The USGS topographic map product

6. National Geospatial Program
2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Feature Content
Ortho-rectified Aerial Imagery
Roads (Commercial Source)
Names
Elevation Contours
Hydrography
State/County/USFS Boundaries
Runways
Woodland
Railroads
PLSS
Fire Stations
Hospitals
Schools
Military Boundaries
Cemeteries
Post Offices
Shaded Relief
USFS Trails
FWS Boundaries
State Capitols
Police Stations
Correctional Facilities
IMBA Trails
National Scenic Trails
Wetlands
Road Source Changed to Census TIGER
US Topo Maps Content

7. National Geospatial Program
 Goals
 Scan approximately 180,000 printed
quadrangles – all maps, all scales
 Use consistent, high quality
specifications (archive 600 DPI
resolution scans)
 Improve applications including
change detection and time series
capabilities
 Georeference maps and provide
metadata
 Release through The National Map
Viewer and other sites
Scanned Historical Topographic Maps

8. National Geospatial Program
 View all the Landsat
1-8 images in USGS
inventory
 Can download a
graphic or the
original full image
tile
LandsatLook

9. National Geospatial Program
 Access to aerial photography, satellite imagery, and
many digital datasets
 Earthexplorer.usgs.gov
Earth Explorer

10. National Geospatial Program
The National Map Viewer
 Primary location to access TNM data
 GIS data and topographic maps
 View and download
 Several search options
 Metadata provided with all downloads

11. National Geospatial Program
 Newer site presenting geologic and historical
topographic maps in a new interface
 Selection by date and location
MapView and TopoView

12. National Geospatial Program
 The National Map – nationalmap.gov
 The National Map Viewer –
viewer.nationalmap.gov/basic
 Earth Explorer – earthexplorer.usgs.gov
 LandsatLook – landsatlook.usgs.gov
 MapView and TopoView –
ngmdb.usgs.gov/ngmdb/ngmdb_home.html
USGS sites:

13. National Geospatial Program
Website – TNM Homepage
nationalmap.gov

14. National Geospatial Program

15. National Geospatial Program
Questions?
Drew Decker
National Map Liaison
619-225-6430
ddecker@usgs.gov